Rubber Expansion Joint Models

AD Muller2020-05-14T08:44:25+00:00

Rubber Expansion Joint Models. We have a line of different Rubber Expansion Joint Models. Please take a look and send us an RFQ and we can supply what is needed.

Pipe Penetration Seals

AD Muller2020-08-24T19:10:07+00:00

Pipe Penetration Seals

 

The Pipe Penetration Seal is designed to provide a gas and water-tight seal. Pipe Penetration Seals PTFE Lined are Rubber Expansion Joints are lined with Teflon for corrosive chemical applications. Pipe Penetration Seals PEN-SEAL Pipe Penetration Seals have been designed to assist in achieving an efficient, low-cost mechanical seal between any Electrical Conduit, Concrete, Cast Iron, Steel, Copper, or PVC/CPVC pipes passing through Walls, Floors, Tanks, Pipeline Casings, and Vaults. The PEN-SEAL, while being used to seal the gap in electrical conduit lines, will also act as an insulator. The PEN-SEAL has been designed to provide a gas and watertight seal. All sizes have been tested to withstand a hydrostatic seal up to 20 psig or 40 feet of head pressure in addition to withstanding temperatures up to 250° F.

 

PEN-SEAL’s standard elastomer material is EPDM, which is suitable for temperatures ranging from -40° F to 250° F. EPDM is suitable for most applications in water—above ground and direct burial—and will provide the electrical insulation where cathodic protection is required. Silicone material is also available for higher temperature applications up to 400° F. Where the PEN-SEAL may come in contact with Hydrocarbons, Oil, Gas, Jet Fuel, and miscellaneous solvents, a Nitrile material is available with temperatures ranging from -40° F to 210° F. The PEN-SEAL utilizes glass-reinforced plastic for the pressure plates and all hardware is manufactured from Steel Zinc Dichromate. For corrosion resistance, 316 Stainless Steel hardware is also available. Various applications for the PEN-SEAL:

  • Wall Sleeves • Precast Concrete • Valve PitsFloor Sleeves • Mining • Offshore Oil Platforms
  • Interior Piping • Marine • Telecommunications
  • Noise Dampener • Water & Wastewater • Dual Containment Seal
  • Electrical Contractors • HVAC • Underground Steel Tanks
  • Coal Preparation Plants
  • Pulp & Paper
  • Power Generation

 

Other Rubber Products

AD Muller2020-09-11T04:11:39+00:00

Rubber Pipe Connector

Each Series 300 Flanged Rubber Pipe Connector is specifically engineered for your particular application. Multiple plies of tough fabric and helical spring steel wire are embedded into the pipe wall during the manufacturing process, resulting in a product precisely designed for your pressure and vacuum requirements.

Available styles include:

The Style 310 is precision molded to specific lengths, as listed in Table 3. The built-in rubber flanges are manufactured to adhere to ANSI 125/150# drilling specifications.

Style 310

The Style 310 is manufactured using conventional methods which allow for fabrication to a specific custom length requirement. It is also available in pre-manufactured lengths (shown in Table 3). The Style 310 is standard with 125/150# drilling, but can also be fabricated to meet other drilling patterns.

Style 320

The Style 320 is designed for high-pressure applications and is manufactured similarly to Style 310. Flanges are usually produced to ANSI 250/300# drilling specifications, but other drilling patterns can be accommodated upon request.

Some notable features of the Series 300 Flanged Rubber Pipe Connectors include:

The 9013-EP Low Torque Gasket is fully molded for precise sizing, and is manufactured with the PTFE film bonded to the EPDM rubber gasket. A unique outer sealing ring around each bolt hole is added, for additional sealing safety.

These special gaskets are for use on plastic, fiberglass, glass or other piping systems which require minimal sealing forces. The outer sealing rings provide the utmost in sealing at extremely low bolt torques.

Some notable features of the Series 9013-EP include:

The Series 450 Rubber Sleeve Type Pipe Connectors are constructed of neoprene rubber, and reinforced with impregnated woven nylon. Sealing beads are molded on the interior of the sleeve to provide extra sealing action for the clamping area. Internal reinforcing rings prevent deformation of the connector during surges or temporary negative pressure conditions. Outer reinforcement rings are added to provide even more external reinforcement.

Some notable features of the Series 450 include:

Dannenbaum LLC can supply a large range of rubber expansion joints.

Braided Flexible Metal Connectors

AD Muller2020-09-18T16:40:28+00:00

 

Metal Pump Connectors

Braided Flexible Metal Pump Connectors help with stresses that can occur within piping systems. Our flexible pipe connectors are constructed out of metal. Therefore, they have the ability to withstand high levels of pressure due to the braided metal which surrounds them. The connectors are suitable for many different mechanical applications for example, pipes, pumps, compressors and other heavy equipment.

Ordinary flexible metal hoses can fail to operate properly when subjected to high pressures; adding a flexible restraint, such as a metal braid, allows the hose to adequately withstand the specified internal pressure. As well as prevents elongation. The woven metal braid fits over the metal hose. It is also strong enough to withstand elongation up to the full pressure rating of the hose. Flexible hoses and braids are made from different metals. Common materials used for braided flexible metal connectors are 321 stainless steel hose and a 304 stainless steel.

Braided Flexible Metal Pump Connector

Braided flexible metal pump connectors control vibration, reduce noise, relieve stress, prevent system shock. Additionally, they compensate for misalignment and movement. Braided metal connectors such as pumps, compressors, and other mechanical equipment will help the overall operation of the system.

Flexible metal hose by itself, when subjected to high pressure can over-extend past the ability to operate properly. Therefore, include an external flexible restraint (i.e., braid) to withstand the specified internal pressure and prevent excessive elongation. A woven material known as braid is designed to fit snugly over the metal hose, it is fastened to the ends of both hose and fittings.

Dannenbaum LLC is a major supplier of rubber expansion joints, PTFE expansion joints, bellow pump connectors, orifice fittings plates & flanges, metal expansion joints, ducting expansion joints.

Dannenbaum LLC markets products to the power generation industry, refinery & chemical process industry, HVAC industry, pulp & paper industry, water & waste-water treatment industry and general industrial institutions through a distribution network.

Flexible metal grooved pump connector control a variety of mechanical stresses, such as:

  • Vibration control
  • Noise reduction
  • Relief from system stressors
  • Prevention of system shock
  • Compensation for misalignment and movement

Feel free to contact us if you have any questions.

 

 

Ducting Expansion Joints

AD Muller2020-08-29T20:34:52+00:00

Ducting Flexible Connector

The Style 520 Ducting Flexible Connector is an economical, integrally flanged design, used primarily for the reduction of fan vibration. The fan/duct connector features a U-shaped design configuration, with a minimum of one to two plies of reinforced fabric that has been vulcanized into a homogeneous product. The finished thickness can be selected from 3/16”, 1/4”, or 3/8”. The Style 520 is manufactured with continuous corners; no splices are made in the corner areas. The Style 530 Ducting Flexible Connector features an integrally flanged design, and is used primarily in applications which experience large movements, and face-to-face space is at a premium.

The duct connector a rubber expansion joint is manufactured in an arch-design configuration, with a minimum of one to two plies of reinforced fabric that has been vulcanized into a homogeneous product. The finished thickness can be selected from 3/16”, 1/4”, or 3/8”. The Style 530 is manufactured with a pre molded arch which continues through the corner, and straight sections are fully developed when in the neutral installation position.

The Style 540 Ducting Flexible Connector is an economical, integrally flanged design, and is used primarily in applications which experience large movements.

The duct connector is manufactured in a W-design configuration, with a minimum of one to two plies of reinforced fabric that has been vulcanized into a homogeneous product. The finished thickness can be selected from 3/16”, 1/4”, or 3/8”.

The Style 540 is manufactured with a pre molded arch, and flanges are an integral part of the expansion joint construction. The arch continues through the corner, and is fully developed when in the neutral position.

PTFE Pipe Expansion Joints

AD Muller2020-09-11T04:17:15+00:00

PTFE Pipe Expansion Joints

PTFE Pipe Expansion Joints” Rubber Check Valve is a cost effective way to control back pressures from sewage treatment plants, outfalls and tidal operations. They are a fully passive flow device requiring neither maintenance nor any outside sources of power or manual assistance to operate.
The PTFE Expansion Joints Check valves are offered as direct replacements for ineffective and maintenance ridden flap type check valves, commonly known to seize, rust and bind in unwanted positions. Unlike flap type valves, the PTFE Expansion Joints rubber check valve will handle large obstructions without jamming or having swing gates binding open. Specify the PTFE Expansion Joints rubber check valves to provide backflow protection from (1) Sewage slurries, (2) Outfalls to ocean fronts from heavy rainfall activity, (3) Prevention from land erosion due to back flow conditions, (4) Protection from saltwater to fresh water ponds and catch basins and numerous other water based applications. Our history in the manufacture of rubber piping products dates back to 1930.
Flanged:
Designed to bolt directly to existing flanges or new installations, flanges are drilled 150# standard. Other drilling standards are also available upon request.
All of the PTFE Pipe Expansion Joints Rubber Check Valves are available in a various selection of elastomers including NSF/ANSI 61 certified material and back pressure capabilities to suit most applications.
The PTFE Pipe Expansion Joints Rubber Check Valves will not freeze or deform and functions solely on the inlet and back pressure which will be present in each application.
 
Benefits of the PTFE Pipe Expansion Joints Rubber Check Valves:
  • All rubber construction resists abrasive slurries.
  • NSF61 is standard construction.
  • Very quiet operation with no water hammer.
  • Its unique design prevents backflow.
  • Negligible maintenance and energy costs.
  • Will not warp or freeze.
  • Quick interchange with any flap type check valve.
  • Available in sizes 1” – 96”
  • Available with special I.D to suit concrete pipe.
Frequently Asked Questions
PTFE Pipe Expansion Joints” Rubber Check Valve.
1. Does the Pipe Expansion Joints rubber check valve have to be installed in a certain position?
Yes.
3. What is “Back Pressure”?
When the PTFE Pipe Expansion Joints rubber check valve is submerged in a liquid it is subjected to external pressure. It is critical that the maximum depth that the valve will be submerged is specified as this will be considered the maximum back pressure that the valve will be subjected to.
4. What is the cracking pressure to allow the valve to open?
1”to 2” of water column over back pressure will normally drain a pipe.
5. What back pressures can the Pipe Expansion Joints rubber check valve withstand?
Back pressures are in direct relation to the size of the valve, on the smaller diameters it is acceptable to specify up to 200 psi of back pressure and on larger diameters a back pressure limitation would be approximately 12 psi. Each Pipe Expansion Joints rubber check valve is manufactured to the exact line pressure, back pressure and flow rates which we require from you for manufacture. PTFE Expansion Joints can even supply valves up to 650 psig utilizing internal back pressure supports.
6. What are the most common installations?
The PTFE Expansion Joints rubber check valve is bolted directly to a head wall replacing an existing flap gate.
7. Can I use the Pipe Expansion Joints rubber check valve on potable water applications?
The Pipe Expansion Joints rubber check valves are available with an ANSI/NSF-61certified elastomer. Due to the large demand for clean water and portable applications, this will eliminate the concerns commonly affiliated with contaminants or leaching of elastomers in potable water systems.
8. Can the PTFE Pipe Expansion Joints rubber check valve be installed on an “out of round” pipe?
Yes, please have the approximate dimensions from 4 different angles to provide proper sizing.
9. Can river currents and ocean waves damage the valves?
In most cases river currents and ocean waves will not damage the Pipe Expansion Joints rubber check valves, but if currents or waves in question are of an abnormal nature, it is suggested that side walls or rock pilings are utilized.
10. Can the PTFE Expansion Joints rubber check valve be used as a pressure relief valve?
No, the Pipe Expansion Joints rubber check valves have been designed to offer superior service as a back flow preventer and should not be considered for a pressure relief valve.
11. Can PTFE Pipe Expansion Joints make a special design to suit my requirements?
In most instances the Pipe Expansion Joints rubber check valve can be fabricated to suit different applications.
12. What types of elastomer is available?
The PTFE Pipe Expansion Joints rubber check valve can be manufactured and supplied to withstand almost any type of media. Most commonly supplied are Nitrile (nsf/ansi Standard 61 certified), Neoprene, Gum Rubber, Chlorobutyl and EPDM.
13. What types of materials are available for the backing rings and banding clamps?
14. Can the PTFE Pipe Expansion Joints supplied with special flanges or drilling?
Yes, the standard drilling pattern is ANSI 125/150# drilling, other drilling standards such as: ANSI 250/300#, BS-10, DIN NP-10 and DIN NP-16, JIS-5k and JIS-10K are available upon special request.
15. Can I install a PTFE Expansion Joints rubber check valve near a residential area?
Yes, one of the unique features of the Pipe Expansion Joints rubber check valve is the design of the bill section. While the bill will open and allow passage of fluid when head pressure is present, the bill will close and not allow children or animals to crawl inside when there is no head pressure.
Will the PTFE Pipe Expansion Joints rubber check valve operate if buried in sand or sediment?
This velocity will flush the rest of the sediment away from the valve opening.
18. What is the maximum temperature that the PTFE Pipe Expansion Joints rubber check valve can handle?
Temperature can range from – 65 Deg to +400 Deg depending on the specified elastomer.

Check Valves

AD Muller2020-08-29T20:28:43+00:00

Rubber Check Valves

The Series 700 Rubber Check Valve is a cost effective way to control back pressures from sewage treatment plants, outfalls and tidal operations. They are a fully passive flow device requiring neither maintenance nor any outside sources of power or manual assistance to operate.
The Series 700 Check valves are offered as direct replacements for ineffective and maintenance ridden flap type check valves, commonly known to seize, rust and bind in unwanted positions. Unlike flap type valves, the rubber check valve will handle large obstructions without jamming or having swing gates binding open. Specify the Series 700 rubber check valves to provide backflow protection from (1) Sewage slurries, (2) Outfalls to ocean fronts from heavy rainfall activity, (3) Prevention from land erosion due to back flow conditions, (4) Protection from saltwater to fresh water ponds and catch basins and numerous other water based applications. Our history in the manufacture of rubber piping products dates back to 1930. When an engineered solution is needed to solve a piping or backflow problem.
 
The Series 700 Rubber Check Valve are available in a Flanged (Style 710 or 720), Sleeved (Style 730 or 740), or Jacketed (Style 750).
Inline orifice (style 770/780)
 
Style 710: Flanged:
Designed to bolt directly to existing flanges or new installations, flanges are drilled 150# standard. Other drilling standards are also available upon request. The style 710 can be installed in either vertical or horizontal application.
Style 720: Flanged Inline:
Designed to fit directly inside of an existing pipe.
Supplied with a flat face rubber flange which allows installation between existing pipe flanges eliminating the requirement for a valve body. Other drilling standards are also available upon request.​
Style 730: Sleeve Type:
Designed to easily slip over an existing pipe, is affixed to a pipe with heavy-duty Stainless Steel clamps. Can be installed in either vertical or horizontal application.​
Style 740: Slip In Inline:
Designed to slip directly inside of an existing pipe. Supplied with a stainless steel expandable clamp to secure it in place.
Style 750: Jacketed:
Designed with a full metal enclosure which allows easy installation in existing piping systems. Utilizes the Style 710 as the check valve.​
 
ELASTOMERS:
All of the Series 700 Rubber Check Valves are available in a various selection of elastomers including NSF/ANSI 61 certified material and back pressure capabilities to suit most applications.
 
The Series 700 Rubber Check Valves will not freeze or deform and functions solely on the inlet and back pressure which will be present in each application.
 
Each valve is carefully constructed using the finest of engineered materials and some of the most experienced rubber technicians in the industry. All check valves are engineered in precise detail to ensure proper operation and will provide years of unhindered operation and trouble free service.
 
Benefits of the Series 700 Rubber Check Valves:
 
  • All rubber construction resists abrasive slurries
  • NSF61 is standard construction
  • Very quiet operation with no water hammer
  • Its unique design prevents backflow
  • Negligible maintenance and energy costs
  • Will not warp or freeze
  • Quick interchange with any flap type check valve
  • Available in sizes 1” – 96”
  • Available with special I.D to suit concrete pipe.
 
Frequently Asked Questions
 

Rubber Check Valve

 
1. Does the rubber check valve have to be installed in a certain position?
Yes; it should be installed in a vertical position with the bill being the vertical. In zero clearance situations the valve can be rotated up to 30 Degrees to gain bottom clearance if required..
 
2. In which degree can the rubber check valve be installed?
Because the valve is not reliant on any hinges, gates, or weights the rubber check valve can be installed in any angle from vertical to horizontal.
 
3. What is “Back Pressure”?
When the rubber check valve is submerged in a liquid it is subjected to external pressure. It is critical that the maximum depth that the valve will be submerged is specified as this will be considered the maximum back pressure that the valve will be subjected to.
 
4. What is the cracking pressure to allow the valve to open?
1”to 2” of water column over back pressure will normally drain a pipe.
 
5. What back pressures can the rubber check valve withstand?
Back pressures are in direct relation to the size of the valve, on the smaller diameters it is acceptable to specify up to 200 psi of back pressure and on larger diameters a back pressure limitation would be approximately 12 psi. Each rubber check valve is manufactured to the exact line pressure, back pressure and flow rates which we require from you for manufacture. We can even supply valves up to 650 psig utilizing internal back pressure supports.
 
6. What are the most common installations?
The 710 flanged rubber check valve is bolted directly to a head wall replacing an existing flap gate, the 730 sleeved type rubber check valves are clamped directly to a fabricated flanged nipple or clamped directly to an existing pipe.
 
7. Can I use the rubber check valve on potable water applications?
The rubber valves are available with an ANSI/NSF-61certified elastomer. Due to the large demand for clean water and potable applications, this will eliminate the concerns commonly affiliated with contaminants or leaching of elastomers in potable water systems.
 
8. Can the rubber check valve be installed on an “out of round” pipe?
Yes, please have the approximate dimensions from 4 different angles to provide proper sizing.
 
9. Can river currents and ocean waves damage the valves?
In most cases river currents and ocean waves will not damage the rubber check valves, but if currents or waves in question are of an abnormal nature, it is suggested that side walls or rock pilings are utilized.
 
10. Can the rubber check valve be used as a pressure relief valve?
No, the rubber valves have been designed to offer superior service as a back flow preventer and should not be considered for a pressure relief valve.
 
11. Can we make a special design to suit my requirements?
In most instances the rubber check valve can be fabricated to suit different applications.
 
12. What types of elastomer is available?
The rubber check valve can be manufactured and supplied to withstand almost any type of media. Most commonly supplied are Nitrile (nsf/ansi Standard 61 certified), Neoprene, Gum Rubber, Chlorobutyl and EPDM.
 
13. What types of materials are available for the backing rings and banding clamps?
rubber check valves are supplied with 316 stainless steel backing rings and 304 stainless steel clamps as a standard. Other materials are available upon request.
 
14. Can the 710 be supplied with special flanges or drilling?
Yes, the standard drilling pattern is ANSI 125/150# drilling, other drilling standards such as: ANSI 250/300#, BS-10, DIN NP-10 and DIN NP-16, JIS-5k and JIS-10K are available upon special request.
 
15. Can I install a rubber check valve near a residential area?
Yes, one of the unique features of the rubber valve is the design of the bill section. While the bill will open and allow passage of fluid when head pressure is present, the bill will close and not allow children or animals to crawl inside when there is no head pressure.
Since the rubber check valve is manufactured entirely of rubber compounds there is no chance of loud banging which is commonly heard from flap type valves.
 
16. Can I use a rubber check valve in winter conditions?
Yes, as in any installation the rubber valve will not be hindered by winter or sub-zero installations. If the valve is installed in a running water application the valve will continue to operate satisfactorily, due to the elastomers unique chemical makeup. If unusual circumstances occur the rubber valve will freeze without any damage and will return to operation upon thaw.
 
17. Will the rubber check valve operate if buried in sand or sediment?
In normal conditions the discharge flow will create a small flow pattern which will then be followed by the flow velocity of the media. This velocity will flush the rest of the sediment away from the valve opening. This has been found to be unique only to the straight bill design as supplied by Dannenbaum LLC.
 
18. What is the maximum temperature that the rubber check valve can handle?
Temperature can range from – 65 Deg to +400 Deg depending on the specified elastomer.
 
19. Is the rubber check valve suitable for direct sunlight and UV areas?
Yes, all rubber valves are manufactured with a highly resistant Nitrile external cover. In some applications the rubber check valve may be subjected to oil sludge’s which make Nitrile the perfect choice for protection.