Ball Joint

In this paragraph, I’m going to tell you about Ball Joints. With a unique design, they can be disassembled for seal replacement, inspection, or other maintenance issues with a resulting product that lasts a lifetime. They absorb pipe movement for applications ranging from steam and hot water pipe expansion, tank and building settlement, seismic isolation, wave motion compensation on oil platforms and drill ships, solar panel movement, oil well riser expansion and safety relief valve escape piping.

Ball Joints are commonly used in steam hot water heating systems due to their safety and reliability. When used in sets of two or three they absorb thermal expansion or contraction by the Off-Set method of lateral displacement. They are installed in pipe run or loop oriented perpendicular to the movement. Main anchors are not required as the design of ball joints reacts pressure thrust, and the flex torque reaction force is moderate. A lot of people confuse ball joints and ball valves.

Barco Ball Joints are commonly used in steam hot water heating systems due to their safety and reliability.

Uses

To react pressure thrust and absorb rotational and torsional motions, ball joint are used for tank and building settlement, seismic isolation, solar arrays, and piping displacement from wave motion. They are approved by Factory Mutual System for fire protection systems, and have been tested to 8.3 seismic simulation.

Three ball joint installation

Two ball joint installation.

 

Ball joints are used extensively for shipboard applications including oil platforms and drill ships. They are designed and qualified to ASME Class 2500 through 8″ NPS, and Class 900 through 12″ NPS. Fire tested to API 6FA, they meet ASTM F1298 shipboard piping specifications. Also they are approved by ABS Americas and Lloyd’s register.

Type N Style I Ball Joints

They have evolved from the original ball joints. Developed by Barco in 1908 to distribute steam from locomotives to passenger cars for heating. The Type N Style I was developed in 1960. Since that time thousands of Style I joints have been installed in steam, hot water and chilled water distribution systems, used to absorb tank and building settling, used for seismic isolation and many other piping applications to compensate for expansion or to add flexibility to the system. Type N Style I joints are available from 2 1/2″ through 30″ with proprietary Compound 11 composition seals or Compound 24 glass filled Teflon seals.

Type N Style II, III & III-V Ball Joints

They designed with injected graphite flakes with synthetic oil carrier, Grafoil® Flexible Graphite, that provides lubrication in addition to sealing. Grafoil® combined with a variety of high strength bearing materials results in increased temperature and pressure ratings. Seal options include Compound 11 non-metallic composition material, Number 21 ductile iron, Number 39 Alloy 625 high nickel stainless steel and Number 45 chrome-moly steel.

All Type N Style II, III & III-V ball Joints

They permit repacking with Grafoil® after installation. Packing of Type N Style II is accomplished with the system pressure removed and the installation of a Recharge Cylinder. The Recharge Cylinders are a permanent part of Type N Style III & III-V thus permitting repacking with the system operating. The Style III-V has the added benefit of a Safety Valve to completely isolate the system pressure.

Dannenbaum LLC can also help you with your Standard series Ball joint, OW1500 Ball Joints , and Series 3500 IS In-Line Seismic Expansion Joint.

Hyspan Barco Ball Joint Applications

Ball joints can be installed to absorb pipe movement in many applications ranging from thermal expansion or contraction of pipe, tank or building settlement, movement resulting from a seismic event, equipment movement such as solar panels and platens, and repetitive motion on bridges, oil platforms and ships. Regardless of the source of the motion, the ability of ball joints to absorb the motion relies on the Off-Set® Method.

The following illustrations are typical installations of ball joints. They are primarily illustrated in one plane; however, ball joints are completely universal allowing motion in all planes including rotation around the centerline. No other method of absorbing pipe motion has this capability.

balljointapplicationballjointapplicationballjointapplication
Figure 1: Two ball joints installed in an offset legFigure 2: Two ball joints installed in an offset leg with preset or cold spring.Figure 3: Two ball jointsin a loop. Can also be installed with preset similar to Figure 2.
balljointapplicationballjointapplicationballjointapplication
Figure 4: Four ball joints installed in a loop for high axial motion.Figure 5: Two ball joints installed in an off-set leg with motion along two axes.Figure 6: Three ball joint installation with an off-set leg and motion along one axis.
balljointapplicationballjointapplicationballjointapplication
Figure 7: Three ball joint installation with motion along two axes.Figure 8: Oil field wellhead installation – ball joints are displaced by twisting or torsion.
(Oil Field Steam Injection)
Figure 9: Three ball joints installed in safety relief valve piping.


Calculation of Thermal Expansion

When materials change temperature they expand or contract in accordance with the equation:

(1)  =  where  is the coefficient of thermal expansion, a property of the material, is the change in temperature, and  is the linear dimension that changes temperature.

For piping applications the expansion of commonly used piping materials has been tabulated per 100 feet based on an installation temperature of 70°F. Refer to Thermal Expansion of Materials. Using this tabulation,

(1′) = (Tabulated Value) x ÷ 100 where  is the thermal expansion in inches,  is the pipe run in feet.

If the installation temperature is substantially different from 70°F, correct the expansion value by adding or subtracting the expansion from 70°F as appropriate to the installation temperature.

Two Ball Joint Installation

 

balljointapplicationThe installation of two ball joints in a system (Figure 10) must consider the Flex Angle (), the length (L) separating the ball joints, the pipe displacement (D), and the forces and moments on the system. The maximum flex angle varies with the nominal size and configuration of the ball joint. Generally, 2" NPS and smaller are 30° total. Sizes 2 1/2" NPS and larger are 15° total as a minimum. Values are listed in Column 3 of the Design Data for Type N Style I, Type N Style II, III & III-V and the Standard Series. The OW1500 are 30°, and all ASME Class joints are
15°. The tabulated values are total flex angles - fully deflected from the maximum offset to the maximum offset in the opposite direction.
Figure 10


Minimum Two Ball Joint Spacing (L)

The expansion or movement () is determined by calculation of thermal expansion, or it may be given as other system design data such as tank settling or seismic motions. Referring to Figure 10, the minimum length (L) separating the ball joints (rotational center to center) when the joints are installed in the neutral position and the angle () is measured from the neutral to the deflected centerline is calculated by the equation:

(2)  =  (inches) (Figure 10, no preset)

If the expansion or movement is in a single direction, this length can be reduced by installing the ball joints preset or with cold spring. The minimum length, L, is obtained when the preset is equal to one half of the movement ().

 

balljointapplicationWith preset as illustrated in Figure 11, Equation (2) becomes:

(2′)  =  (inches) or  = 

when the preset (inches) is equal to one half of the movement ().

Caution: These values are theoretical and do not allow for installation error or additional movement. Always use the longest length (L) practical within space limitations and good piping practice.

Figure 11


Example 1:

Determine the minimum center to center length for 2 ASME Class Ball Joints (15° total flex angle) installed in piping with 12″ of expansion. Referring to Equation (2),  = 12”,  = 15°/2 = 7.5°, Sin 7.5° = 0.131 (from table below) = 12″/0.131 = 91.60″. With preset equal to 6″ = 91.60/2 = 45.80″

For rough sizing of the off-set length (L), the minimum flex angle for all sizes and configurations of ball joints is 15° total. Referring to Equation (2), the Sine of the half angle, 7.5°, is 0.131. Since 1/0.131 = 7.63 it can be rounded up to 8, L = 8  without preset and L = 4  with preset can be used with conservative results. This is the most conservative approach. If sufficient length is not available use the flex angle for the ball joint configuration selected, and calculate L with Equation (2) with adequate allowances for installation tolerances and additional movement.

Two Ball Joints Installed in an Existing Leg

When ball joints can be installed in an existing off-set leg in the piping the length (L) can be determined and the flex angle () can be calculated for a know deflection () by the following equation.
(3)  

 

Angle
(Degrees)
Sine

1
2
3
4
5
6
6.5
7
7.5
8
 

0.0175
0.0349
0.0523
0.0698
0.0872
0.104
0.113
0.121
0.13
0.139
 
Angle
(Degrees)
Sine

8.5
9
9.5
10
10.5
11
11.5
13.5
15
15.5
 

0.148
0.156
0.165
0.174
0.182
0.191
0.199
0.233
0.259
0.267
 
Angle
(Degrees)
Sine

17
19
20
21
22
23
24
27
30
31
 

0.292
0.326
0.342
0.358
0.375
0.391
0.407
0.345
0.500
0.515


Pipe Displacement (D)

As the ball joints are deflected the off-set length between the parallel pipe runs decreases. In Figures 10 and 11 the lower pipe is anchored and the upper run with the expansion must bend to deflect an amount (D) as illustrated in Figures 10 & 11. The deflection (D) can be calculated by the equation:

(4) D = L –  without preset and

(5) D = L – 1/2  with preset or D = L – 1/2  with preset when the preset is equal to

the 1/2 of the movement .

These equations can be simplified by using the equations:

(6) D =  without preset and

(7) D =  with preset equal to the 1/2 of the movement .

 is the total displacement or expansion in Equations 4 through 7.

Location of First Restraint

Once the deflection (D) has been determined, the length of pipe to the first restraint (x) can be determined to avoid overstressing the pipe and elbows. Referring to Figures 10 and 11, the minimum length of pipe to the restraint based on the allowable bending stress at the restraint can be calculated by the formula:

(8) x =  (feet)

d = Outside diameter of the pipe (inches),
E = Modulus of Elasticity (psi) of the material,
S= Allowable Stress (psi) for the pipe material selected.

As an approximation the Modulus of Elasticity, E, can be assumed to be 30 x 10 psi, and a value of 10,000 psi can be used for the Allowable Stress. This value is substantially less the ASME Code allowable; however, it provides a safety factor for stress intensification in the elbows and welds. With these approximations Equation (8) becomes:

(8′) x = 5.59  (feet)

Ball Joint Anchor Forces

The anchor forces resulting from the installation of ball joints result from the seal resistance force that is provided as the Flex Torque (ft.-lbs.) for each nominal size and configuration. Since the outer seal reacts the pressure thrust, the Flex Torque is a function of the system pressure. Charts of Flex Torque are plotted over the pressure range of each ball joint are available on the web page for each configuration. The anchor force (illustrated in Figure 12) can be calculated by the following equation:

 

balljointapplication(9) F =  = thrust load (lbs)

T = Flex Torque (ft.-lbs.)

L = Center to center length (feet)

Figure 12


Example 2:

Two 10″ Type N Style I weld end ball joints with number 11 composition seals (P/N BB-31020-70-11) are to be installed at 70°F in an off-set leg of a 300’ run of steel pipe with operating conditions of 300 psig at 417°F.

The thermal expansion of the pipe is:  = (2.86) x 300÷100 = 8.58″ [Equation (1′) and Column 2 of Thermal Expansion of Materials 2.86 was extrapolated between 400°F and 450°F].

The minimum length of the off-set leg without preset is:  = 8.58″ ÷ Sin 8.5° = 57.97″ [Equation (2) and Column 3 of Dimensional Data for Type N Style I Ball Joints. The total flex angle is 17° 17/2 = 8.5° Sin 8.5° = 0.148 from tabulation above].

As an alternative the minimum length with preset is equal to 1/2 of  = 57.97″ ÷ 2 = 28.98″ [Equation (2’)]

In order to avoid using the ball joints at the maximum of their capability we recommend rounding these lengths up to 60″ and 30″. Using Equation (3) the flex angle is:

  = 0.143  8° or 16° total flex angle < 17° design value.

The pipe displacement, D, is: D =  = 0.61″ without preset and using the simplified equation (6)

or D = = 0.31″ with preset using equation (7).

The minimum distance to the first restraint is: x = 5.59  = 14.31’ (feet) without preset or x = 5.59  = 10.20’ (feet) with preset using Equation (8′) based on an allowable stress of 10,000 psi and a Modulus of Elasticity of 30×10 psi. Note that the pipe outside diameter is the true diameter (10.75″). Not the nominal size.

The force on the anchors resulting from the ball joint seal resistance is: F =  = 2000 lbs. force without preset

or F =  = 4000 lbs force with preset at 300 psig. Refer to the Type N Style I Ball Joints chart of Flex Torque v.

Pressure for the Flex Torque value of 5000 ft.-lbs. Note: This force is a result of the seal resistance only. It does not include the weight of the pipe and media or vertical shear resulting from the pipe bending.

Referring to Figure 12, the length of the off-set leg or the center to center distance between the parallel pipe runs (H) can be calculated.

H = Ball Joint center to center length (L) + Ball Joint Length + 2 Elbow tangent lengths H = 60″ + 16.5″ (Column 6 of Dimension Data) + 2 x 15″ (long radius elbows) = 106.5″ without preset and H = 30+16.5 + 2 x 15 = 76.5″ with preset.

Three Ball Joint Installations

balljointapplication

The addition of a third ball joint in a system eliminates pipe bending, and allows the pipe to be restrained close to the offset leg. This is important when the ball joints are located in confined locations such as vaults or short rigid runs in process piping.

Figure 13 illustrates an application similar to the two ball joint illustration shown in Figure 10 with a third ball joint added in the upper run. The two ball joints should always be located in the leg perpendicular to principal motion. Referring to Figure 13, the ball joint angles (A, B & C) can be calculated by the following equations. The application of these equations to this problem is a close approximation that yields results that are slightly conservative.

Figure 13

(10)  (11)  (12)  =  + 

Note: Equation (12) is the algebraic sum. In Figure 13  is positive and  is negative. The length separating the ball joints (L) can be calculated with Equation (2) or (2’), and the Deflection (D) can be calculated from Equations (4), (5), (6) or (7). The location of the third ball joint (L’) can be selected by the designer. When the ball joint (C) is installed directly to the tangent of the elbow (minimum L’),  is maximum and  is minimum.

Example 3:

Referring to the values used in Example 2 for a 10″ Type N Style I ball joint without preset:  = 8.58″, L = 60″ and D = 0.61″. If ball joint (C) is attached directly to the elbow L’ = 15″ (tangent length for long radius elbow) + 8.25″ (distance to rotational center from Column 5 of Dimensional Data) = 23.25″

(10)  = 0.143  8° (11)  = 0.0262  1.5°

(12)  = 8° – 1.5°  6.5°. A common practice is to locate joint (C) at a distance equal to L i.e. L’ = L. Then

 = 0.010  0.5° and  = 8° – 0.5° = 7.5°

 

balljointapplicationWhen motion occurs in the same plane as the pipe run but along two perpendicular axes, three ball joints are required. Figure 14 illustrates an installation similar to Figure 13 except the lower pipe run expands upward. The following equations are very close approximations that can be used to calculate the ball joint angles.

(10) (13) 

(12)  =  + 

Equation (12) is the algebraic sum. In Figure 14  and  are positive. Joint B will have the highest angle.

Figure 14


Example 4:

Three 16’ Type N Style III weld end ball joints with number 21 ductile iron seals (P/N BB-61020-76-21) are to be installed in a piping system. The movement along the horizontal run () is 10” and the vertical movement () is 4″.

The total flex angle for P/N BB-61020-76-21 is 21° (Column 3 of Dimensional Data).

To determine the spacing (L) of ball joints A and B without cold spring, Equation (2) can be used for an approximation. Because Equation (2) yields the minimum length based on the horizontal movement only and the maximum flex angle of the ball joint, the spacing must be increased because of the added vertical movement.
(2)  = Substituting Sin A for Sin  with A = 21°/2 = 10.5°, Sin A = 0.182 (from table above),

 =  = 54.95” ,or using the rough sizing recommended above: L = 8 () = 8(10) = 80″. As a trial L = L’ = 80″

then (10)  = 0.125  7°, (6) D =  = 0.625″ (13)  =0.0422  2.5°

(extrapolated from table above – for angles 5° and less the Sine and Tangent are approximately equal B = 7°+ 2.5° = 9.5° 10.5° or 1/2 of the total flex angle of the ball joint. The trial layout has yielded satisfactory results – the maximum ball joint angle at joint B is less than the maximum value with a reasonable allowance.

If there isn’t sufficient space available to install the ball joints with this layout, they can be installed with cold spring or preset. If the ball joints in Figure 14 are installed with 6″ preset on the horizontal run, and we design the center to center distance, L, to be 48″ with L’ = L then:

(2’)  = 0.083  5°, (5) D = 48 –  = 0.166,

(13)  = 0.079,  4.5° (12) B = 5° + 4.5°  9.5°  10.5°

Oil Field Steam Injection Well Connections

Hyspan Barco Type N Style II, ASME Class and OW1500 ball joints are commonly used to compensate for the thermal expansion of steam injection wells in oil fields. Depending on the well design, the growth can be as great as 1-2 meters (39-79 inches). The recommended ball joint installation for this application is a scissors arrangement shown in the adjacent illustration and photograph below. This arrangement deflects the ball joints in rotation.
There are several important elements of this design:

 

Ball Joint Scissors
Ball Joint Scissors

The orientation of the connections to the well head and supply pipe can be different than the illustration, but the center of rotation of all three ball joints must be in the same plane. For sizes 5" NPS and larger, the scissor linkage must be guided and supported to maintain the in-plane alignment and to react the weight of the linkage.
The supply pipe must be anchored (Main Anchor) as close as possible to the first ball joint. This anchor must be rigid and capable of reacting forces and moments in all planes with the exception (optional) that the supply pipe thermal expansion can be absorbed by allowing the pipe to travel horizontally through the anchor as illustrated. The purpose of the anchor is to maintain the position and configuration of the scissors linkage, react the forces and moments resulting from the internal resistance of the ball joints, and react the forces and moments within the supply piping.
The supply pipe connection and well head connection can be at the same elevation or at different elevations as shown in the illustration. The well head "tree" provides an anchor that reacts the forces and moments resulting from the internal resistance of the scissors. The scissors connection to the "tree" should be as close as possible – avoid any long overhangs that provide a moment arm from the "tree" to the scissors.
The included angle between the legs of the scissors should be approximately 90º at the installed condition, and should not exceed 130º when the well head is fully extended.

 

As a design aid, the Technical Assistance section includes design recommendations for the scissors linkage design, Leg Length Calculation for Ball Joint Scissor Arrangement. This calculation program provides a convenient method to develop the basic design of a well head connection following the recommendations described above. The complete scissor arrangement including the ball joints, pipe spools, elbows and end connections should fabricated in a shop environment with the end connections accurately located. The ball joints should be installed in the "as received" condition from the factory. They should not be rotated or deflected to assist with the fabrication of the scissors, and the Retainer should not be loosen to facilitate installation. A prefabricated scissors linkage with flanged connections is shown in the adjacent photograph. This completed assembly should be transported to the installation restrained to maintain the configuration. The "yellow" bar shown in the photograph provides this function.

 

Steam Injection Well

Steam Injection Well

Prefabricated Well Head Scissors connection

Prefabricated Well Head Scissors connection

The Hyspan Barco Ball Joints incorporate design features that are not available in comparable products.

 

The design includes Inner and Outer Seals which rigidly position the ball, and the outer seal reacts the pressure thrust.
The materials of the seals can be varied to be best suited to the design requirements.
The cavity between the seals is injected with a mixture of graphite flakes and synthetic oil, Grafoil® Flexible Graphite.
Additional graphite packing can be injected through the Injection Ports after the joints are in service without removing the joints. The procedure for injecting packing is described in the Installation and Maintenance Procedures for Type N Style II, ASME Class and OW1500 ball joints.
All Hyspan Barco Ball Joints can be completely disassembled for inspection or maintenance. Sizes through 2" NPS have threaded retainers and larger sizes have flanged retainers as shown in the illustrations.
The removable retainers have the added benefit of allowing precision adjustment of the internal resistance (flex torque) of the ball joint.

Nominal Sizes Through 2 Inch

Nominal Sizes Through 2”

Nominal Sizes 2-1/2” and Over

Nominal Sizes 2-1/2” and Over

Solar Panel Connections

Hyspan Barco Type N Style II, ASME Class and OW1500 ball joints are commonly used to connect the heat transfer fluid piping of parabolic mirror solar collectors to the main header, and in the crossover piping between adjacent rows of the mirrors. These connections absorb the thermal expansion of the collector tube that extends the length of the mirrors, and allow the mirrors to rotate from the stowed position (facing down) and then rotate to track the sun during operation.

The photograph of the Header Linkage shows the insulated piping with three ball joints located at the end of each mirror. The ball joints rotate as the linkage is actuated when the mirror rotates, and angulate (flex) to absorb the thermal expansion of the collector tube as shown by this video. 

The photograph of the Crossover Piping shows the insulated loop connecting two mirrors. In this photograph both mirrors are facing downward. There are two ball joints incorporated into a dual assembly at the center and a single ball joints on each side. Although it is not shown in this photograph the design allows for one mirror to be facing downward with the adjacent mirror focused on the sun.

The ball joints installed in this piping are shown in the adjacent photographs of the single ball joint and the dual ball joint. The center section of the dual assembly is machined from one piece to eliminate welding. The maximum design conditions for the ball joints illustrated were 30 Bar (435 psig) and 393ºC (740ºF) using Dowtherm A®. They rotate 215º and flex +/- 7º.

In order to validate the design, Hyspan performed a life cycle test simulating the 30 year design life of the system. This involved operating a test apparatus for 11,095 cycles (30.3 years). Throughout this test the ball joint remained leak tight and the flex torque and rotational torque remained within specifications. A summary (Summary Test Report, Ball Joint Life Cycle) of the testing is available in the Technical Assistance section.

 

The Hyspan Barco Ball Joints incorporate design features that are not available in comparable products.

 

The design includes Inner and Outer Seals which rigidly position the ball, and the outer seal reacts the pressure thrust.
The materials of the seals can be varied to be best suited to the design requirements.
The cavity between the seals is injected with a mixture of graphite flakes and synthetic oil, Grafoil® Flexible Graphite.
Additional graphite packing can be injected through the Injection Ports after the joints are in service without removing the joints. The procedure for injecting packing is described in the Installation and Maintenance Procedures for Type N Style II, ASME Class and OW1500 ball joints.
All Hyspan Barco Ball Joints can be completely disassembled for inspection or maintenance. Sizes through 2" NPS have threaded retainers. The 2-1/2" NPS can be threaded or flanged.
The removable retainers have the added benefit of allowing precision adjustment of the internal resistance (flex torque) of the ball joint.
Nominal Sizes Through 2 Inch (threaded retainer)

Nominal Sizes 2-1/2” and Over (flanged retainer)

 

 

Type N Style I ball joints have been widely accepted since the design was introduced in 1960. They are commonly used in steam, hot water, chilled water, petroleum and chemical piping to absorb thermal expansion. Common applications are tank and building settlement, seismic isolation, bridge movement and wave motion compensation in addition to steam and hot water distribution systems.

Standard models are available as weld end or flanged with optional seal materials. The total flex angle varies with size from 15º to 31º. Refer to Column 3 of the Dimensional Data below.

Standard materials are wrought steel for the ball, case and retainer. The ball sealing surface is protected with crack free chrome plating and coated with molybdenum disulfide.

 

Part Number
BB-31020

Part Numbers
BB-31533 (150 lb.)
BB-31536 (300 lb.)

Dimensional DataType N Style I Ball Joints

 

Nominal
Size
(NPS)
Size
Code
Flex
Angle
(degrees)
Outside
Diameter
(inches)
Rotational
Center
(inches)
2 1/2-40235.943.50
3-48227.194.25
4-64259.755.50
5-652511.286.00
6-662312.387.19
8-681714.758.00
10-7016.517.138.25
12-721519.758.69
14-7415.2522.5010.06
16-7615.525.2511.25
18-781526.7512.50
20-8015.530.0011.50
24-841535.2516.00
30-901542.6218.00
13345
Weld End
BB-31020
Overall
Length
(inches)
Weight
(lbs)
6.7513
7.8821
11.0063
12.0095
14.25122
15.94190
16.50262
17.79380
19.50520
22.66736
23.38820
24.00940
29.351375
34.772090
67
150 lb. Flanged
BB-31533
Overall
Length
(inches)
Weight
(lbs)
12.529
13.6341
17.2593
19.25133
21.5170
24.19268
24.75366
27.04540
29.75740
32.911016
34.631140
35.631330
41.61925
45.782810.00
89
300 lb. Flanged
BB-31536
Overall
Length
(inches)
Weight
(lbs)
1337
14.3851
18113
20159
22.25206
24.94324
26444
28.29660
31880
34.411236
36.131460
371740
42.852535
51.523950
1011

Flex Torque

Flex torque is the moment (ft.-lbs.) at break-a-way to angularly displace a ball joint. Because the pressure thrust is reacted by the seals the flex torque is a function of pressure as illustrated by the adjacent charts for Number 11 composition seals. The values for Number 24 glass filled Teflon® seals are 15% less than the Number 11 seal values.

The values given are for steam service. For water or oil service the torque values are 45% less.

Flex Torque
Type N Style I Ball Joints
Number 11 Composition Seals

Flex Torque Type N Style I Ball Joints
Number 11 Composition Seals

Seal Descriptions and Pressure Temperature Ratings

Seal Number 11

Compound 11 is a pressure molded proprietary seal compound recommended for general purpose applications for steam, hot water and oil systems. Compound 11 has the highest pressure/temperature ratings of the available seal materials.

Rated for service at temperatures from -50º F to +525º F.

Seal Number 24

Compound 24 is pressure molded proprietary compound of glass fiber and Teflon®. The addition of the glass fiber adds strength and stability to the seal. The compound is chemically inert and is recommended for applications involving corrosive fluids when a higher pressure rating is required.

Rated for service at temperatures from
-325º F to +425º F.

Number 24 Glass Filled Teflon® Seal
Part Number BB-31020, BB-31533 & BB 31536
Weld End, 150 lb. & 300 lb. Flanged

Number 11 Composition Seal
Part Numbers BB-31020 & BB-31536
Weld End & 300 lb. Flanged

Number 11 Composition Seal
Part Numbers BB-31533
150 lb. Flanged

Ordering Instructions

To order or specify Hyspan Barco Ball Joints state the complete part number which includes; the basic Assembly Number selected from the illustrations, the Size Code from Column 2 of the Dimensional Data tabulation and the Seal Code based on the seal composition required.

Installation and Maintenance Procedures

Proper application and maintenance of ball joints is important. Refer to Installation and Maintenance Procedures for Type N Style I ball joints for the correct procedures including disassembly and seal replacement.

 

 

Hyspan Barco Type N Style II, Style III & III-V Ball Joints

Type N Style II, III & III-V ball joints combine the inner and outer seals that are common to all Hyspan Barco ball joints with injected graphite flakes with synthetic oil carrier, Grafoil® Flexible Graphite packing. This combination allows the use of a wide variety of high strength seal materials with the lubrication and high temperature sealing capability of Grafoil®.

The ball sealing surface of Type N Style II, III, & III-V ball joints is protected with two mils of chrome plating consisting of one mil of hard chrome over one mil of crack free chrome, and baked-on molybdenum disulfide lubricant coating.

Type N Style II ball joints can be repacked after installation in the system if necessary. Type N Style III and III-V ball joints can be repacked under pressure. All configurations can be completely disassembled for maintenance.

Type N Style II, III & III-V ball joints are used in steam and hot water distribution systems, chemical and petroleum plants, oil exploration drilling ships and platforms, and many other critical installations. All standard configurations are warranted for five years.

Higher pressure designs and designs conforming to the ASME code are available as Hyspan Barco ASME Class Ball Joints.

Type N Style III ball joints have been fire tested in accordance with API 6FA and approved by ABS Americas and Lloyd’s Register for shipboard applications.

Style III-V Injector

balljointinjector

Style III Injector

balljointinjector

Style II Plugged Port

balljointinjector

For repacking Type N Style III-V joints refer to the Installation and Maintenance Procedures.

For repacking Type N Style III joints refer to the Installation and Maintenance Procedures.

For repacking Type N Style II joints refer to the Installation and Maintenance Proes.

barcoballjoint

Part Number
BB-41020 (Style II )

barcoballjoint

Part Numbers
BB-61020 (Style III)
BB-66020 (Style III-V)

barcoballjoint

Part Numbers
BB-41533 (150 lb. Style II )
BB-41536 (300 lb. Style II )

barcoballjoint

Part Numbers
BB-61533 (150 lb. Style III)
BB-66533 (150 lb. Style III-V)
BB-61536 (300 lb. Style III)
BB-66536 (300 lb. Style III-V)

 

Dimensional Data
Type N Style II, Style III and III-V Ball Joints

 

Nominal
Size
(NPS)
Size
Code
Flex
Angle
(degrees)
Outside
Diameter
(inches)
Rotational
Center
(inches)
2 1/2-40235.943.50
3-48227.194.25
4-64259.755.50
5-652511.286.00
6-662312.387.19
8-681714.758.00
10-7016.517.138.25
12-721519.758.69
14-7415.2522.5010.06
16-7615.525.2511.25
18-781526.7512.50
20-8015.530.0011.50
24-841535.2516.00
30-901542.6218.00
13345
Weld End
BB-41020
BB-61020
BB-66020
Overall
Length
(inches)
Weight
(lbs)
6.7513
7.8821
11.0063
12.0095
14.25122
15.94190
16.50262
17.79380
19.50520
22.66736
23.38820
24.00940
29.351375
34.772090
67
150 lb. Flanged
BB-41533
BB-61533
BB-66533
Overall
Length
(inches)
Weight
(lbs)
12.529
13.6341
17.2593
19.25133
21.5170
24.19268
24.75366
27.04540
29.75740
32.911016
34.631140
35.631330
41.61925
45.782810.00
89
300 lb. Flanged
BB-41536
BB-61536
BB-66536
Overall
Length
(inches)
Weight
(lbs)
1337
14.3851
18113
20159
22.25206
24.94324
26444
28.29660
31880
34.411236
36.131460
371740
42.852535
51.523950
1011

Flex Torque

Flex torque is the moment (ft.-lbs.) at break-a-way to angularly displace a ball joint. Because the pressure thrust is reacted by the seals the flex torque is a function of pressure as illustrated by the adjacent graphs for Number 19, 21 and
39 seals.

The values given are for steam service. For water or oil service the torque values are 45% less.

Flex Torque
Type N Style II, III & III-V Ball Joints
Number 19, 21 & 39 Seals

Flex Torque Type N Style II, III & III-V Ball Joints Number 19, 21 & 39 Seals

Flex Torque Type N Style II, III & III-V Ball Joints Number 19, 21 & 39 Seals

Seal Descriptions and Pressure Temperature Ratings

Seal Number 19

Compound 19 is a pressure molded proprietary seal compound recommended for general purpose applications for steam, hot water and oil systems. Compound 19 has the highest pressure/temperature ratings of the available non-metallic seal materials.

Rated for service at temperatures from -50° F to 525° F.

Seal Number 21

Compound 21 seals are cast ductile iron and precision machined. The ductile iron combined with the chrome plated sealing surface of the ball provide a low friction long life seal.

Rated for service at temperatures from -20° F to 650° F with standard materials of construction.

Seal Number 39

Compound 39 seals are machined from Alloy 625 high nickel stainless steel. Alloy 625 has very high strength combined with exceptionally high corrosion resistance.

Number 39 seals are normally used in Type N packed ball joints made from special materials such as stainless steel and high chrome steel alloys. The temperature/pressure ratings are dependent on all of the materials used for construction .

Seal Number 45

Compound 45 seals are machined from ASME A-182 F11 chrome-moly steel forgings. Alloy F11 is a very high strength steel which can be used for higher temperature applications.

Number 45 seals are normally used in Type N packed ball joints made from special materials flange including high chrome steel alloys. The temperature/pressure ratings are dependent on all of the materials used for construction.

Pressure/Temperature Ratings Number 19 Composition Seal Type N Style II, III & III-V Weld End & 300 lb. Flanged

Pressure/Temperature Ratings Number 19 Composition Seal Type N Style II, III & III-V
150 lb. Flanged


Pressure/Temperature Ratings
Number 21 Ductile Iron Seal
Type N Style II, III & III-V Weld End




The rated pressure for flanged is determined by the rating. Consult the applicable code for the allowable pressure at the design temperature.

Accessories

Recharge Cylinder
Part Number 10-64416-43

Type N Style II ball joints are designed to be sealed after installation if a leak develops. A recharge cylinder that is designed to be temporarily installed in the charging ports is available.

Reload Kits
Part Number 10-64715-00

Flexible graphite packing material is available as pellets designed to be inserted into Type N Style II, III and III-V recharge cylinders. Each kit contains 13 pellets.

Insulation Covers

Removable, reusable insulation covers as specially made to fit all styles and configurations of Hyspan Barco ball joints. A full range of insulation and jacketing materials are available for all design temperatures. Covers for the Style III and III-V ball joints have pre-cut openings to allow access to recharge cylinders.

balljointpacker

Style II Recharge Cylinder

Recharge Kit Pellets

Ordering Instructions

To order or specify Hyspan Barco Ball joints state the complete part number which includes; the basic Assembly Number selected from the illustrations, the Size Code from Column 2 of the Dimensional Data tabulation, and the Seal Code based on the seal material required.

Installation and Maintenance Procedures

Proper application and maintenance of ball joints is important. Refer to Installation and Maintenance Procedures for Type N Style II, Type N Style III and Type N Style III-V for the correct procedures including disassembly and seal replacement.

Five (5) Year Limited Warranty

This warranty is given by HYSPAN PRECISION PRODUCTS, INC. (HYSPAN) for the benefit of the first purchasers for use of Hyspan Barco Type N Style II, Style III and Style III-V Ball Joints manufactured by HYSPAN to standard catalog construction. The product is warranted to be free from defects in material and workmanship, and to be leak-free for a period of five (5) years from the date of shipment by HYSPAN in accordance with the following conditions:

  • The design pressure and temperature are not exceeded -including surge and upset conditions.

  • The installation conforms to HYSPAN installation procedures and approved practice for anchoring, supporting and guiding, and generally accepted good piping practice.

  • Substances in contact with all internal and external surfaces must be compatible with the materials of construction, including all contaminates.

  • The warranty shall be limited to the replacement by HYSPAN of the same model Hyspan Barco Ball joint, and payment for transportation of the replacement assembly by the least expensive method. Labor, material and other costs related to the failure or replacement of the expansion joint are not included. HYSPAN shall not be liable for damage or delay suffered by the purchaser regardless of whether such damages are general, special or consequential in nature, whether caused by defective material or workmanship, or whether caused by HYSPAN’S negligence regardless of the degree.

  • HYSPAN warranties satisfactory leak-free performance. If leakage occurs through the packing and cannot be prevented by the addition of packing by the user in accordance with the field packing installation instructions, HYSPAN will repair or replace the ball joint within the terms of this warranty.

  • This warranty is expressed in lieu of all other warranties, expressed or implied, including the warranty of merchantability, the implied warranty of fitness for a particular purpose, and all other obligations or liabilities on the part of HYSPAN, and it neither assumes nor authorizes any other persons to assume for HYSPAN any other liabilities in connection with the sale of the products.

  • The warranty is limited to installations in the United States, Puerto Rico and Canada.

The purchaser shall advise the HYSPAN factory of any warranty claim including the nature of the failure. HYSPAN shall provide return goods authorization and shipping directions to return the failed joint to the factory. A mutually agreeable delivery schedule and method of shipping the replacement shall be established. The purchaser shall furnish a confirming purchase order and is obligated to the current replacement cost of the joint and shipping expense. Upon receipt of the failed product, the cause of failure shall be determined by the factory at no expense to the purchaser. A credit shall be issued by the factory for the replacement cost and least expensive shipping for valid warranty claims. In the event of a dispute, HYSPAN shall furnish the failed product to the purchaser or their representative for failure analysis.

 

 

 

Hyspan Barco ASME Class Ball Joints

ASME Class Ball Joints are designed to conform to the ratings established for ASME butt weld valves at 100º F. Designs are available from 150 lb. through 2500 lb. They are recommended for use in ASME B31.1 and B31.3 piping systems. Hyspan Barco ASME Class Ball Joints have been widely accepted for chemical and petroleum system applications including oil field wellheads, oil exploration drilling ships and platforms, and high pressure steam and hot water.

The sealing systems consist of optional seal materials including ductile iron, chrome-moly alloy steel, and high nickel alloys 600 and 625 combined with injected graphite flakes with synthetic oilGrafoil® Flexible Graphite packing. Grafoil® packing can be injected after installation if necessary, and the ball joints can be disassembled for maintenance.

All Hyspan Barco ASME Class Ball Joints are designed for a total flex angle of 15°.

ASME Class Ball Joints have been fire tested in accordance with API 6FA and approved by ABS Americas and Lloyd’s Register for shipboard applications.

balljoint

6″ NPS, Series 6600 ASME Type Class, 2500 Ball Joint

 

ASME Ball Joint Table

Flex Torque/Pressure
ASME Class Hyspan Barco Ball Joints

Installation and Maintenance Procedures

Proper application and maintenance of ball joints is important. Refer to the Installation and Maintenance Procedures for ASME Class ball joints for the correct procedures including disassembly and seal replacement.

Grafoil® is a registered trademark of Graftech (formerly UCAR)

 

Hyspan Barco OW1500 Ball Joints
Style II and III-V

OW1500 ball joints are designed for 1500 psig at 650º F. They are recommended for installation on oil field wellheads to compensate for the riser expansion, solar panels to accommodate for panel rotation and other high pressure applications. Standard OW1500 ball joints are available 2″ nominal pipe size. For other sizes and pressure ratings refer to Hyspan Barco ASME Class Ball Joints.

The ball, casing and retainer are made from wrought steel. The spherical surface of the ball is chrome plated with two mils of chrome consisting of one mil of hard chrome and one mil of crack free chrome. The plating is protected by a coating of baked-on molybdenum disulfide lubricant.

The sealing system consists of ductile iron inner and outer seals (Number 21) with injected graphite flakes with synthetic oil carrier, Grafoil® Flexible Graphite.

OW1500 Style II

balljointballjointpacker

Recharge Cylinder
Part Number 01-64416-43

For repacking OW1500 Style II ball joints refer to the Installation and Maintenance Procedures.

Part Number BB-36203-32-21
Schedule 80 Weld Ends

Part Number BB-36204-32-21
Schedule 160 Weld Ends

Nominal Size (NPS): 2″ (Size Code 32)
Design Pressure: 1500 psig
Design Temperature: 650º F

Flex Angle: 30º
Weight: 13 lbs.

Allow 4″ to install the recharge cylinder and to remove the ram screw.

Installation and Maintenance Procedures

Proper application and maintenance of ball joints is important. Refer to the Installation and Maintenance Procedures for OW1500 Style II ball joints for the correct procedures including disassembly and seal replacement.

OW1500 Style III-V
balljoint

Part Number BB-36603-32-21 Schedule 80 Weld EndsPart Number BB-36604-32-21 Schedule 160 Weld Ends

Nominal Size (NPS): 2″ (Size Code 32)
Design Pressure: 1500 psig
Design Temperature: 650º F

Flex Angle: 30º
Weight: 15 lbs.

Allow 2.5″ to remove the ram screw.

Installation and Maintenance Procedures

Refer to Installation and Maintenance Procedures for repacking of OW1500 Style III-V ball joints. Proper application and maintenance of ball joints is important. Refer to Installation and Maintenance Procedures for OW1500 Style III-V ball joints for the correct procedures including disassembly and seal replacement.

Grafoil® is a registered trademark of UCAR.

 

 

 

 

 

 

Dannenbaum LLC Ball Joints
Installation and Maintenance Procedures

Standard Series & 600 Series Ball Joints

Installation Recommendations

 

1.The media flow direction can be from either end of the ball joint except for liquids with suspended solids, then flow should be from ball end to casing end.
2.In vertical installations, ball joints should be installed with the ball end down to prevent foreign matter from collecting between neck of ball and retainer.
3.Do not loosen the ball joint retainer during installation, or utilize ball joints as Unions. Each joint is factory preset and tested before shipment. LOOSENING OF THE BALL JOINT RETAINER IS NOT RECOMMENDED. If the retainer must be loosened it should be loosened 1/4 of a revolution maximum, and retightened an equal amount before any pressure testing or flushing of the line. There is a setscrew to maintain the position of the retainer - be sure the setscrew is loosened and retightened after the adjustment and prior to applying pressure.
4.Use CAUTION PREHEATING, WELDING, OR POST WELD HEAT-TREATING ball joints into the line. Excessive heating of the sealing area may cause leakage.
5.Protect the exposed ball surface from weld splatter, and prevent dirt and debris from collecting around neck of the ball.
6.Although ball joints can be rotated or twisted around the centerline, they are designed to absorb motion by the Offset Method that utilizes angular flex to provide the required movement.

General Warning

Standard Series and 600 Series Ball Joints are not designed for maintenance to be performed while the system is pressurized. DO NOT PERFORM ANY ADJUSTMENTS TO A BALL JOINT THAT IS PRESSURIZED.

Maintenance Instructions

To correct leaks or to perform routine maintenance:

1.Relieve the internal pressure.
2.Loosen the retainer setscrew and tighten retainer until it is snug against the ball using
a reasonable amount of torque with manual wrenches. Tighten the setscrew and pressurize the system. If leakage still occurs the ball joint can be disassembled for maintenance
3.TO DISASSEMBLE the ball joint for maintenance it must be removed from the system.

a.Disassemble by loosening the setscrew and removing the retainer.
b.Inspect the inner seal for wear: The inner seal is seldom worn enough to require replacement. It is recommended that the outer seal should be replaced.
c.Clean and inspect ball surface carefully. Replace the ball if it is worn, scored or pitted.
d.Replacement balls and seals are available from an authorized representative or by contacting Dannenbaum LLC Be certain to dispose of the discarded seals properly.
e.To reassemble, coat the surfaces of seal(s) and ball with a light coat of assembly lubricant. For service over 350º F use molybdenum disulfide based lubricant.
f.If the inner seal has been removed, install it in the case with the concave surface
out by tapping it in place evenly with a soft mallet.
g.Slide new outer seal over extended end of ball with the concave surface mating to
the convex surface of ball.
h.Replace ball into case.
i.Tap the new outer seal evenly with soft mallet into casing around ball.
j.Add thread lubricant to retainer threads and replace the retainer - tighten until the seals are snug against the ball with a reasonable amount of torque with manual wrenches. Do not back off. Tighten the setscrew.

 

Note: In some sizes with 90º balls, it may be necessary to slip seal and retainer over the ball before seating ball and seal into case to provide clearance at neck or elbow.

Type N Style I Ball Joints

Installation Recommendations

1.The media flow direction can be from either end of the ball joint except for liquids with suspended solids, then flow should be from ball end to casing end.
2.In vertical installations, ball joints should be installed with the ball end down to prevent
foreign matter from collecting between neck of ball and retainer.
3.Do not loosen the ball joint retainer during installation, or utilize ball joints as Unions. Each joint is factory preset and tested before shipment. LOOSENING OF BALL JOINT RETAINER IS NOT RECOMMENDED. If the retainer must be loosened, loosen the bolting 1/4 revolution maximum using a standard crossing pattern. Retighten the bolting using the procedure outlined in Paragraph 2 of the Maintenance Instructions below.
4.Use CAUTION PREHEATING, WELDING, OR POST WELD HEAT-TREATING ball joints
into the line. Excessive heating of the sealing area may cause leakage.
5.Protect the exposed ball surface from weld splatter, and prevent dirt and debris from
collecting around neck of ball.
6.Although ball joints can be rotated or twisted around the centerline, they are designed to absorb motion by the Offset Method that utilizes angular flex to provide the required movement.

General Warning

Type N Style I Dannenbaum LLC Ball Joints are not designed for maintenance to be performed while the system is pressurized. DO NOT PERFORM ANY ADJUSTMENTS TO A BALL JOINT THAT IS PRESSURIZED.

Maintenance Instructions

To correct leaks or to perform routine maintenance:

1.Relieve the internal pressure.
2.Tighten retainer bolting to a maximum of twice the factory torque settings that are given below. Use a standard crossing pattern.
Number 11 Composition Seals

Nominal Size(s)Factory Torque (ft.-lbs.)
2 1/2" & 3"12 to 15
4", 5" & 6"40 to 50
8" through 30"80 to 90

Number 24 Glass Filled Teflon® Seals

Nominal Size(s)Factory Torque (ft.-lbs.)
2 1/2"4-5
3" & 4"8-10
5" & 6"12-14
8"-14"24-26
16"-24"20-24

If leakage still occurs the ball joint can be disassembled for maintenance.

 

3.TO DISASSEMBLE the ball joint for maintenance it must be removed from the system.

a.Disassemble by loosening the retainer bolts and removing the retainer.
b.Inspect the inner seal for wear: The inner seal is seldom worn enough to require replacement. It is recommended that the outer seal should be replaced.
c.Clean and inspect ball surface carefully. Replace the ball if it is worn, scored or pitted.
d.Replacement balls and seals are available from an authorized Dannenbaum LLC Be certain to dispose of the discarded seals properly.
e.To reassemble, coat the surfaces of seal(s) and ball with a light coat of assembly lubricant. For service over 350º F use molybdenum disulfide based lubricant.
f.If the inner seal has been removed, install it in the case with the concave surface
out by tapping it in place evenly with a soft mallet.
g.Slide new outer seal over extended end of ball with the concave surface mating
to the convex surface of ball.
h.Replace ball into case.
i.Tap the new outer seal evenly with soft mallet into casing around ball.
j.Replace the retainer tighten the bolting to the factory settings given in Paragraph
2 above.

Type N Style II, OW 1500 Style II & ASME Class Ball Joints

Installation Recommendations

1.The media flow direction can be from either end of the ball joint except for liquids with suspended solids, then flow should be from ball end to casing end.
2.In vertical installations, ball joints should be installed with the ball end down to prevent foreign matter from collecting between neck of ball and retainer.
3.Do not loosen the ball joint retainer during installation, or utilize ball joints as Unions.
Each joint is factory preset and tested before shipment. LOOSENING OF THE BALL JOINT RETAINER IS NOT RECOMMENDED. If the retainer must be loosened, loosen bolted retainers by loosening the bolting 1/4 revolution maximum using a standard crossing pattern. Retightened using the procedure outlined in Paragraph 7(j) of the Maintenance Instructions below. OW 1500 Style II ball joints have threaded retainers. Loosen the retainer 1/4 revolution maximum and retighten the same rotation.
4.Use CAUTION PREHEATING, WELDING, OR POST WELD HEAT-TREATING ball joints into the line. Excessive heating of the sealing area may cause leakage.
5.Protect the exposed ball surface from weld splatter, and prevent dirt and debris from .
collecting around neck of ball.
6.Although ball joints can be rotated or twisted around the centerline, they are designed to absorb motion by the Offset Method that utilizes angular flex to provide the required movement.
balljointpacker
Style II Recharge Cylinder

General Warning

Type N Style II, OW 1500 Style II and ASME Class Ball Joints are not designed for maintenance to be performed while the system is pressurized. DO NOT PERFORM ANY ADJUSTMENTS TO A BALL JOINT THAT IS PRESSURIZED.

Maintenance Instructions

To correct leaks or perform routine maintenance.

In order to repack Type N Style II, OW 1500 Style II and ASME Class Ball Joints a recharge cylinder (Part Number 10-64416-43) and packing pellets available in reload kits of 13 pellets (Part Number 10-64715-00) will be required.

1.Relieve the internal pressure and allow ball joint to cool to a safe temperature for
handling.
2.Remove all of the charging port plugs.
3.Prior to installing the recharge cylinder remove the ram screw and insert one (1) packing pellet. Replace the ram screw and rotate until a small amount of sealant has been forced out of the tip of the cylinder. Apply thread lubricant to recharge cylinder threads, and thread the recharge cylinder into the one of the ball joint ports.
4.Inject sealant into the port by turning the ram screw until sealant is forced from the adjacent port. If necessary add additional packing pellets. Do not exceed 150 ft.-lbs of torque on the ram screw.
Recharge Kit Pellets
Recharge Kit Pellets
5.Remove the recharge cylinder. Sealant should expand from the port. Replace the port plug.
6.Thread the recharge cylinder into the adjacent port and repeat steps 5 and 6 until all of the ports have been charged and the plugs replaced. Be certain that all of the plugs have been replaced with the threads fully engaged and tightened prior to pressurizing. If leakage still occurs the ball joint can be disassembled for maintenance
7.TO DISASSEMBLE the ball joint for maintenance it must be removed from the system.

a.Disassemble the joint by removing the retainer.
b.Inspect the inner seal for wear: The inner seal is seldom worn enough to require replacement.
c.Clean and inspect ball surface carefully. Replace the ball if it is worn, scored or pitted.
d.Replacement balls, seals and packing are available from an authorized. Be certain to dispose of discarded seals and injected packing properly.
e.To reassemble, coat the surfaces of the seal(s) and ball with a light coat of assembly lubricant. For service over 350º F use molybdenum disulfide based lubricant.
f.If the inner seal has been removed, install it in the case with the concave surface out by tapping it in place evenly with a soft mallet.
g.Slide new outer seal over extended end of ball with the concave surface mating to the convex surface of ball.
h.Replace ball into casing.
i.Tap the new outer seal evenly with plastic or rubber hammer into casing around ball.
j.For bolted retainers tighten retainer bolting to the following factory torque settings using a standard crossing pattern.
Number 11 Composition Seals

Nominal Size(s)Factory Torque (ft.-lbs.)
2 1/2" & 3"12-15
4" through 6"40-50
8" through 30"80-90

Number 21 Ductile Iron & Other Metal Seals

Nominal Size(s)Factory Torque (ft.-lbs.)
2 1/2"6
3" & 4"10-12
5" & 6"14-16
8" through14"24-26
16" through 30"20-22
k.For the threaded retainer on OW 1500 ball joints add thread lubricant to the retainer threads and torque the retainer to 360 ft.-lbs.
l.Add the injected packing following Paragraphs 2 through 6 above. If possible perform an air and soap bubble leak test before reinstalling.

Type N Style III Ball Joints

Installation Recommendations

1.The media flow direction can be from either end of the ball joint except for liquids with suspended solids, then flow should be from ball end to casing end.
2.In vertical installations, ball joints should be installed with the ball end down to prevent foreign matter from collecting between neck of ball and retainer.
3.Do not loosen the ball joint retainer during installation, or utilize ball joints as Unions. Each joint is factory preset and tested before shipment. LOOSENING OF BALL JOINT RETAINER IS NOT RECOMMENDED. If the retainer must be loosened, loosen the bolting 1/4 revolution maximum using a standard crossing pattern. Retighten the bolting using the procedure outlined in Paragraph 6(j) of the Maintenance Instructions below.
4.Use CAUTION PREHEATING, WELDING, OR POST WELD HEAT-TREATING ball joints into the line. Excessive heating of the sealing area may cause leakage.
5.Protect the exposed ball surface from weld splatter, and prevent dirt and debris from collecting around neck of ball.
6.Although ball joints can be rotated or twisted around the centerline, they are designed to absorb motion by the Offset Method that utilizes angular flex to provide the required movement.

General Warning

Type N Style III Ball Joints are designed for repacking to be performed while
the system is pressurized utilizing integral recharge cylinders. DO NOT PERFORM ANY ADJUSTMENTS TO THE RETAINER OF A BALL JOINT THAT IS PRESSURIZED. There
are plugged ports between the recharge cylinders that are for factory use only – do not remove these plugs.

Maintenance Instructions

To correct leaks or to perform routine maintenance.

In order to repack Type N Style III
are available in reload kits of 13 pellets (Part Number 10-64715-00). Reload kits are available from an authorized Dannenbaum LLC.com

1.Type N Style III ball joints are designed to be recharged by injecting packing under full line pressure provided the correct safety precautions are observed. Recharge only if aleak occurs. Only Dannenbaum LLC packing material must be used. Recharging is accomplished by injecting packing through the recharging cylinders - DO NOT PERFORM ANY
ADJUSTMENTS TO THE RETAINER OF A PRESSURIZED BALL JOINT. DO NOT RECHARGE WHILE PRESSURIZED IF LEAKAGE APPEARS THROUGH OR ARROUND A RECHARGE CYLINDER.
WEAR EYE PROTECTION (FULL FACE MASK) AND PROPER SAFETY APPAREL. 
2.Remove the ram screw from the recharge cylinder nearest the point of leakage.
3.Add lubricant (molybdenum disulfide based) to ram screw threads and insert one packing pellet in the chamber, and start ram screw.
4.Inject sealant into the port by turning the ram screw until it is bottomed against the cylinder. Do not exceed 250 ft.-lbs of torque on the ram screw.
5.Repeat Paragraphs 3 and 4 for the remaining recharge cylinders or until the leakage stops. Insert one pellet per cylinder. Repeat Paragraphs 3 and 4 one additional packing rotation or until leakage stops. If leakage still occurs the ball joint can be disassembled for maintenance.
6.TO DISASSEMBLE the ball joint for maintenance it must be removed
from the system.

a.Disassemble joint by removing the retainer.
b.Inspect the inner seal for wear: The inner seal is seldom worn enough to require replacement.
c.Clean and inspect ball surface carefully. Replace the ball if it is worn, scored or pitted.
d.Replacement balls, seals and packing are available from an authorized Dannenbaum LLC representative or contact Dannenbaum LLC.com Be certain to dispose of discarded seals and injected packing properly.
e.To reassemble, coat the surfaces of the seal(s) and ball with a light coat of assembly lubricant. For service over 350º F use molybdenum disulfide based lubricant.
f.If the inner seal has been removed, install it in the case with the concave surface out by tapping it in place evenly with a soft mallet.
g.Slide new outer seal over extended end of ball with the concave surface mating to the convex surface of ball.
h.Replace ball into casing.
i.Tap the new outer seal evenly with plastic or rubber hammer into casing around ball.
j.For bolted retainers tighten retainer bolting to the following factory torque settings using a standard crossing pattern.
Number 11 Composition Seals

Nominal Size(s)Factory Torque (ft.-lbs.)
2 1/2" & 3"12-15
4" through 6"40-50
8" through 30"80-90

Number 21 Ductile Iron & Other Metal Seals

k.Add the packing following Paragraphs 2 through 6 above. Repeat the sequence until the packing no longer flows freely into the ball joint. If possible perform air and soap bubble leak test before reinstalling.

Type N Style III-V & OW 1500 Style III-V Ball Joints

balljointpacker
Style III-V Recharge Cylinder

Installation Recommendations

1.The media flow direction can be from either end of the ball joint except for liquids with suspended solids, then flow should be from ball end to casing end.
2.In vertical installations, ball joints should be installed with the ball end down to prevent foreign matter from collecting between neck of ball and retainer.
3.Do not loosen ball joint retainer during installation, or utilize ball joints as Unions. Each joint is factory preset and tested before shipment. LOOSENING OF BALL JOINT RETAINERS IS NOT RECOMMENDED. If the retainer must be loosened, loosen the bolting 1/4 revolution maximum using a standard crossing pattern. Retighten the bolting using the procedure outlined in Paragraph 7(j) of the Maintenance Instructions below.
4.Use CAUTION PREHEATING, WELDING, OR POST WELD HEAT-TREATING ball joints into the line. Excessive heating of the sealing area may cause leakage.
5.Protect the exposed ball surface from weld splatter, and prevent dirt and debris from collecting around neck of ball.
6.Although ball joints can be rotated or twisted around the centerline, they are designed to absorb motion by the Offset Method that utilizes angular flex to provide the required movement.

General Warning

Type N Style III-V and OW 1500 Style III-V Ball Joints are designed for repacking to be performed while the system is pressurized utilizing the integral recharge cylinders. DO NOT PERFORM ANY ADJUSTMENTS TO THE RETAINER OF A PRESSURIZED BALL JOINT. There are plugged ports between the recharge cylinders that are for factory use only – do not remove these plugs.

Maintenance Instructions

To correct leaks or to perform routine maintenance.

In order to repack Type N Style III-V and OW1500 Style III-V, packing pellets are required that are available in reload kits of 13 pellets (Part Number 10-64715-00).

1.Type N Style III-V and OW 1500 Style III-V ball joints are designed to be recharged by injecting packing under full line pressure provided the correct safety precautions are observed. Recharge only if a leak occurs. Only Dannenbaum LLC packing material must be used. Recharging is accomplished by injecting packing through the recharging cylinders - DO NOT PERFORM ANY ADJUSTMENTS TO THE RETAINER OF A PRESSURIZED BALL JOINT. DO NOT RECHARGE WHILE PRESSURIZED IF LEAKAGE APPEARSTHROUGH OR ARROUND A RECHARGE CYLINDER.

WEAR EYE PROTECTION (FACE MASK) AND PROPER SAFETY APPAREL.

 

2.Select the recharge cylinder nearest the leak and rotate the 1/4 turn safety valve at the base of the cylinder to the off position (arrow is perpendicular to cylinder centerline).
3.Remove the ram screw from the recharge cylinder selected.
4.Add lubricant (molybdenum disulfide based) to ram screw threads and insert one packing pellet in the chamber and start ram screw two turns.
5.Open the valve (arrow is inline with cylinder centerline) and inject the sealant into the port by turning the ram screw until it is bottomed against the cylinder. Do not exceed 250 ft.-lbs of torque on the ram screw.
6.Repeat Paragraphs 3 through 5 for the remaining recharge cylinders or until the leakage stops. It leakage continues repeat Paragraphs 3 through 6 one additional packing rotation. If leakage still occurs the ball joint can be disassembled for maintenance.
7.TO DISASSEMBLE the ball joint for maintenance, the ball joint it must be removed from the system.

a.Disassemble the joint by removing the retainer.
b.Inspect the inner seal for wear: The inner seal is seldom worn enough to require replacement.
c.Clean and inspect ball surface carefully. Replace the ball if it is worn, scored or pitted.
d.Replacement balls, seals and packing are available from an authorized by Dannenbaum LLC
e.To reassemble, coat the surfaces of the seal(s) and ball with a light coat of assembly lubricant. For service over 350º F use molybdenum disulfide based lubricant.
f.If the inner seal has been removed, install it in the case with the concave surface out by tapping it in place evenly with a soft mallet.
g.Slide new outer seal over the extended end of ball with the concave surface mating to the convex surface of ball.
h.Replace ball into casing.
i.Tap the new outer seal evenly with plastic or rubber hammer into casing around ball.
j.For bolted retainers tighten retainer bolting to the following factory torque settings using a standard crossing pattern.
Number 11 Composition Seals

Nominal Size(s)Factory Torque (ft.-lbs.)
2 1/2" & 3"12-15
4" through 6"40-50
8" through 30"80-90

Number 21 Ductile Iron & Other Metal Seals

Nominal Size(s)Factory Torque (ft.-lbs.)
2 1/2"6-7
3" & 4"10-12
5" & 6"14-16
8" through 14"24-26
16" through 30"20-22
k.For the threaded retainer on OW 1500 ball joints torque the retainer to 360 ft.-lbs.
l.Add the packing following Paragraphs 2 through 6 above. Repeat the sequence until the packing no longer flows freely into the ball joint. If possible perform air and soap bubble leak test before reinstalling.