Y Strainer

Y StrainersY Strainers, also known as a (wye) strainer, get their name from looking like the letter Y. A y-strainer is a type of industrial strainer.  Most people generally use wye Strainers in a pressurized gas or liquid-filled pipeline.

Further, somebody can still clean the Y strainer when the pipe system creates a vacuum or suction. Under the proper condition, you can even clean out the Y-strainer without removing the screen.

Firstly, remove solids by taking off the cover and, if you can, keep the screen installed. Secondly, you need to release the fluids. A blow-down valve on the drain will allow flow to continue without removing the screen.

By definition, a strainer provides a means of mechanically removing solids from a flowing liquid. Wye strainers do this by utilizing a perforated metal, mesh, or wedge wire straining element.


Y-Strainers will work when installed horizontally or vertically. In comparison, most basket strainers only work when installed horizontal or slightly inclined piping applications.

You must pay attention to the orientation of the chamber, which collects debris and the drain (blow-down) connection of the Y-Strainer. The wye strainer works best when installed so that it is in the lowest possible position.

Y Strainers protect equipment by filtering out small debris through the strainer’s internal basket or screen. The custom-made basket can be sized with a mesh to catch smaller objects.

Wye Strainers remove noticeable items from pipelines. Thus, protecting pumps and other equipment. Because they are cost-effective in most applications, it is good to use them as much as needed. We use Y-Strainers in chemical processing, petroleum, power generation, marine, and so on. It’s best to clean the wye strainer as often as possible because of high-pressure usage.

Y-Strainers are furnished standard with drain connections and pipe plugs. Most ordinarily, wye strainers are fitted in the field with nipples and drain valves.

Furthermore, you can clean the strainer screen while the system remains in process.

Opening the drain valve while the system is struggling, the debris trapped within the screen is “blown” through this connection, helping to scale back system shut downs for maintenance and cleaning.

Dannenbaum LLC can offer Y strainers in domestic and foreign castings. Y-Strainers are available in forged iron, Ductile Iron, Bronze, Nickel aluminum bronze, Carbon Steel, chrome steel, and a spread of specialty metals including Alloy 20, Hastelloy C276, Monel, Chrome-Moly, and Titanium to face up to thermal or mechanical shock and corrosion.

Pipeline Y-Strainer (Wye Strainer)

Y-strainers, because of their design, is how they got named. This design has an inlet branch out into a dual stem “y” pattern, with one stem holding a removable strainer that stands between the source line and the other stem, which will provide downstream access.

Y strainers are commonly used in pressurized gas or fluid lines and applied in vacuum conditions. However, the strainer portion can be easily blown out, and the strainer stem in the “y” must be pointing down in the orientation to keep debris from backing up.

Cast Wye Strainers and are Available in most Materials.

Pressure ratings are ANSI 125# through ANSI 2500#. Standard body materials offered are forged iron, ductile iron, cast steel, chrome steel, Chrome-Moly, and Bronze. In addition, the wye strainers have detached port.

Valves help flush debris easily removable from the screen and exhaust to the atmosphere or a drain system. This feature allows for straightforward cleaning without interrupting the method. Various perforations, mesh or perforation mesh combinations, or wedge wire screens are available to satisfy your process requirements.

Industrial Wye Strainers

Y Strainers Save System Downtime

Y strainers (sometimes referred to as wye strainers) can save system downtime by ensuring that sediment, residue, and other solids do not negatively impact important components downstream, causing costly shutdowns and repairs of crucial parts.

We provide wye strainers for many different applications in liquid, gas, and steam lines. In addition, we can assist you in selecting the right y strainer for the job.

What is a Pipe Y Strainer?

A Wye strainer is an element with a sieve that captures excess solids and prevents them from continuing down the line. They have either a wire mesh or a perforated straining piece. Depending on the use, some y strainers include a blowdown valve.

Protecting Downstream Components

We know the importance of protecting pipeline components. Any liquid, gas, or steam line is susceptible to foreign particles within the pipe. If debris makes its way down the line and causes damage to process equipment, it could result in costly repairs. Shut-down time can be extensive and grind production to a halt.

However, installing a simple Y strainer can save expensive and time-consuming repair or replace valves, regulators, meters, and pumps. Therefore, selecting the correct Y strainer for your production needs is essential. There is no point in installing a substandard or incorrect y strainer and then still suffering the consequences of debris in the line.

Blow Down Valves

To reduce system downtime even further, choose a y strainer with a blow-down valve. Blow-down valves allow you to clean debris out of the strainer without shutting down production for any period.

Systems with high amounts of particles in the line will need more frequent cleanings. Cleanings are typical in new builds because debris isis generated while constructing the system. Lines that require more frequent cleanings should use a Y strainer with a blowdown valve.

A Y strainer without a blowdown valve requires a system shut down before you can clean the strainer. Furthermore, it is not difficult to clean the Y strainer without a blowdown valve. However, once again, the operator must shut the system down. Blowdown valves on y strainers can be either manual or automatic.

Using the correct Y strainer for your system is essential to avoid costly and time-consuming system downtime. First, assess your plan for the amount of debris expected before deciding if a blowdown valve is a valuable option. Y strainers are simple components that efficiently protect your line from debris.

Piping Y Strainers

Wye strainers are furnished standard with drain connections and pipe plugs. Most ordinarily, wye strainers are fitted within the field with nipples and drain valves to allow the strainer screen to be cleaned while the system remains in process.

Opening the drain valve while the system is struggling, the debris trapped within the screen is “blown” through this connection, helping to scale back system shutdowns for maintenance and cleaning.

Wye strainers are offered in domestic and foreign castings with good straining options for nearly any application.

Wye strainers are available in forged iron, ductile iron, bronze, nickel aluminum bronze, carbon steel, chrome steel, and a spread of specialty metals including alloy 20, Hastelloy C276, Monel, chrome-moly, and titanium to face up to thermal or mechanical shock and corrosion.

(Wye) Strainers

They’re most ordinarily utilized in pressurized lines, gas or liquid, and used in suction or vacuum conditions. Wye strainers are intended for applications where small amounts of solid particulate are expected, and clean-out will be infrequent. For example, if solids will flush easily from the screen and fluid is often exhausted to the atmosphere, a blow-down valve on the drain port will allow clean-out without removing the screen and interrupting the method flow.

Y strainers threaded in forged iron and Cast Bronze feature a machined, tapered seat that ensures an ideal fit for the removable, chrome steel screen. In addition, all sizes come complete with NPT blow-off with plug, which may get replaced with a valve for online blow-down of particulate.

Wye strainers threaded in forged iron feature a machined seat that ensures an ideal fit for the removable, chrome steel screen. All sizes come complete with NPT blow-off with plug, which may get replaced with a valve for online blowdown of particulate.

We offer wye strainers in sizes ¼” – 24″ with threaded, socket weld, or flanged end connections. Strainers are your most economical choice for giant debris removal. They’re most ordinarily utilized in pressurized lines, gas or liquid, and used in suction or vacuum conditions.

In addition, the Y strainer has the advantage of being installed in either a horizontal or vertical position. However, in both cases, the screening element or “leg” must get on the “downside” of the strainer body so that entrapped solids are often adequately collected and held for disposal.


Y strainers protect from steam, water, oil, gas, and foreign matter in a pipeline.


The wye strainers are constructed from rugged 316 stainless steel castings and machined to exacting specifications. These bodies have drilled flanges that are following ASME B16.5. All flanges come standard with back-faced bolt holes.


Wye strainers feature a machined groove in both the body and cover for proper screen alignment. Furthermore, to ensure accurate reseating when servicing is required. The gasket is a 304 stainless steel spiral wound. Thus, it is compressed between the body and cover (for maximum strength and durability).

Moreover, y-strainers aid in high-pressure and high-temperature service. Wye strainers have cap screws and can are furnished with a stainless-steel blow-off plug upon request. Blind covers are available upon request.


Wye strainers standard perforated 304 stainless steel screens are spot welded along the seam for maximum strength. Different size perforations and meshes are available in stainless steel and brass to meet specific media requirements. If media is not indicated, you will supply screens for steam.


Self-cleaning is accomplished by opening the valve or drain plug connected to the blow-off port.



Process Industry
Metals and Mining
Power Industry
Water and Waste
Chemical Industry
Pulp and Paper
Oil and Gas

Low pressure drop streamlined design
Large strainer screens
Compact end to end dimension
Fabricated Construction

Ductile Iron
Carbon Steel
Low Temp Steel
Chrome Molly
Stainless Steel
Other Materials Upon Request

Flat Faced
Raised Face
RTJ Flanged
Threaded (NPT)
Socket weld Sweat

ASME Class 150

Fabricated – Custom sizes to meet any requirements.