PRODUCT FEATURES
Threaded Y Strainer — Product Features
1. Simple structure, low flow resistance: Y-shaped flow path design ensures low pressure drop and high dirt-holding capacity.
2. Easy maintenance
The removable plug at the bottom allows the filter screen to be removed directly for cleaning; it is convenient to dismantle, assemble and clean.
3. Customisable mesh size
Supplied as standard with a stainless steel filter screen; options include 20 mesh, 40 mesh, 60 mesh, 80 mesh and 100 mesh, suitable for various operating conditions involving water, oil and gases.
4. Flexible installation
Can be installed horizontally or vertically; the valve body is marked with a flow direction arrow, and should be installed in accordance with the arrow’s direction.
5. Material options
Valve body in SS304 or SS316; filter screen in 304 or 316 stainless steel; PTFE sealing gasket.
6. Pressure ratings
1/4‘–2’, PN16 / 200 WOG
Connection type
Threaded connection; please confirm the required dimensions and specifications.
Threaded connections
BSPT, BSPP and NPT thread types are available; please confirm the required dimensions and specifications.
Material and seat options
The parts list includes WCB / CF8 / CF8M / 2205 valve body materials and PTFE seat assemblies.
OPERATING PRINCIPLE
How Threaded Y Strainer Works
The threaded Y-type filter features a Y-shaped chamber structure and is classified as a coarse filtration device.
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Operation 1
1. The fluid enters the filter chamber via the inlet, following the direction of the arrow on the valve body;
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Operation 2
2. The fluid passes through the built-in stainless steel filter screen, whilst solid particulate impurities such as silt, rust and welding slag are retained on the inner side of the screen;
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Operation 3
3. The filtered, clean medium flows out through the outlet and is conveyed to the downstream pipework, protecting downstream valves, pumps and instruments;
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Operation 4
4. Impurities continuously accumulate on the inner surface of the filter screen, causing the pressure differential to rise; open the bottom drain plug, remove the filter screen for rinsing and cleaning, and reinstall it for reuse.
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> Key point
It only intercepts solid particles and **cannot filter impurities dissolved in the medium**.
ENGINEERING DATA
Technical Specifications
Technical data supplied for Threaded Y Strainer. Ratings and material combinations should be confirmed for the selected configuration.
| PARAMETER | SPECIFICATION |
|---|---|
| Product type | Threaded Y-strainer |
| Size range | “1/2–4” (DN15–DN100) |
| Thread specifications | BSPT / BSPP / NPT |
| Body material | WCB/CF8 / CF8M |
| Working Pressure | 1.6 MPa |
| Working Temperature | 0°C to 120°C |
| Design and Manufacture | ASME B16.34 |
| Inspection and Testing | API 598 |
| Body/Casing Test Pressure | 1.6 MPa |
| Seat Seal Test Pressure | 1.6 MPa |
| Air Tightness Test Pressure | 1.2 MPa |
MECHANICAL DIMENSIONS
Dimensions & drawings.
Compare connection size with the corresponding overall length, bore and handle clearance dimensions from the supplied drawing.
Dimension chart
| SIZE | DN | L | H |
|---|---|---|---|
| 1/2″ | DN15 | 60 | 40 |
| 3/4″ | DN20 | 72 | 45 |
| 1″ | DN25 | 83 | 55.5 |
| 1-1/4″ | DN32 | 88 | 61.5 |
| 1-1/2″ | DN40 | 102 | 69 |
| 2″ | DN50 | 124 | 80.5 |
| 2-1/2″ | DN65 | 162 | 110 |
| 3″ | DN80 | 188 | 126 |
| 4″ | DN100 | 225 | 166 |
Refer to the supplied dimension chart.
COMPONENT BREAKDOWN
Parts & Materials
Component names and materials from the supplied product parts list.
| NO. | PART | MATERIAL |
|---|---|---|
| 01 | Valve Body | CF8 / CF8M |
| 02 | Filter Screen | 304 / 316 |
| 03 | Gasket | PTFE |
| 04 | Bonnet | CF8 / CF8M |
APPLICATIONS
Applications
Applicable media: the supplied document lists the following fluids. Actual compatibility depends on selected materials, concentration, temperature, pressure and the specific service conditions.
Application – Water Circulation
Cooling water, circulating water, drinking water and neutral purified water.
Application – Steam Piping
Clean, low-temperature saturated steam, subject to the product’s confirmed temperature and pressure limits.
Application – Compressed Air
Compressed air and nitrogen; verify compatibility for each system.
PURCHASING SUPPORT
Frequently Asked Questions
Find answers to common questions about sizing, materials, threaded connections and operating conditions.
What is Y-type threaded strainer?
GL11W Y-type threaded strainer is a pipeline coarse filter with female threaded ends. It captures solid particles in fluid to protect downstream pumps, valves and measuring instruments from abrasion and blockage.
What is the working principle?
Fluid flows into the strainer and passes through the stainless steel screen. Solid impurities like sand, rust and welding slag are trapped inside the screen. Clean medium flows out to downstream. Open the bottom plug to take out and clean the screen when impurities accumulate.
What are the main product features?
Y-shaped structure, low pressure drop and large dirt holding capacity. Removable stainless steel screen for easy cleaning. Mesh size customizable. Can be installed horizontally or vertically. Compact threaded connection for simple installation.
Material options?
Material options?
Do you do 100% pressure test?
Yes. Every valve will pass air leakage test before packing.
MOQ?
Small MOQ available. Mixed sizes in one order acceptable.
Installation method?
Can be installed horizontally or vertically. Must follow the flow arrow marked on valve body.
Is it bi-directional?
No, it is unidirectional. Install strictly according to flow arrow.
What is the function of Y strainer?
Remove solid contaminants such as sand, rust and welding slag, protect downstream pumps, valves and flow meters.
Packing method?
Each valve in plastic bag, then small box, carton outside. Wooden pallet optional.
Can I put my own logo /custom label?
Yes, OEM & ODM available. Logo on handle or body.
What’s the warranty?
12 months warranty against manufacturing defect. Not cover damage from wrong operation.
Available mesh sizes?
20 / 40 / 60 / 80 / 100 mesh, custom mesh available as customer request
How to prevent leakage?
Do not over-tighten thread when installation; avoid impact. Regular inspection for long time service.
“What sizes are available?
The general product specifications list sizes from 1/2” to 2” (DN15–DN50). The accompanying size chart currently covers DN15–DN50; please verify the specific dimensions for the size you require.
What materials can I choose from?
The original bill of materials includes 201, CF8, and CF8M valve body options.
What are the temperature and pressure limits?
The accompanying general data indicates an operating pressure of 1.6 MPa and an operating temperature range of 0°C to 120°C. Suitability of this product for specific fluids and temperatures must be confirmed separately.
What is the lead time for orders?
We maintain a stock of 5,000 BSPT valves for standard orders; other thread types require customization, with a production capacity of 50,000 units within 15 days.
What is the product quality like? Is there a warranty period?
Every valve undergoes rigorous quality inspection, including testing of the material, threads, seals, and valve body, and is backed by a one-year warranty within the normal operating range of the medium.
Threaded Y Strainer
The threaded Y-type filter (GL11W) is a coarse filter for pipework with a Y-shaped design, featuring internal threaded connections at both ends and fitted with a removable stainless steel filter screen. As the fluid flows through the valve body, solid impurities are trapped by the filter screen, whilst the clean fluid is conveyed downstream. This intercepts particulate impurities such as rust, welding slag and silt, thereby protecting downstream pumps, pressure-reducing valves, instruments and valves from wear and blockages caused by solid particles.
Model: Threaded Y-type filter
Material: CF8/CF8M stainless steel
Nominal diameter: 1/2”–4” (DN15–DN100)
Rated pressure: 1.6 MPa (PN16)
Connection type: Threaded connection (BSPT / BSPP / NPT)
