DN50 (2″) Class 800 CF8M Stainless Steel Threaded Y-Strainer YS029902
This DN50 (2″) Class 800 Y-Strainer features a CF8M stainless steel body and bonnet, with a SS316 wire mesh screen. It is designed for easy cleaning and maintenance, with the screen manually cleaned by shutting down the line and removing the strainer cap. The strainer is suitable for air, natural gas, and a wide variety of liquid straining applications, protecting downstream equipment from unwanted sand, gravel, or other debris. It is commonly used in chemical processing, petroleum, power generation, marine, water treatment, and industrial facilities.
Product Attributes
| Valve Type | Y Strainer |
|---|---|
| Body Pattern | |
| Nominal Diameter (DN / NPS) | |
| Pressure Rating (PN / Class / JIS) | |
| Body Material | |
| Body Standard | |
| End Connection | |
| Connection Standard | |
| Cover / Bonnet Type | |
| Cover / Bonnet Material | |
| Cover Seal / Gasket Material | |
| Screen / Basket Material | |
| Screen / Element Type | |
| Blowdown / Drain Connection | |
| Operation / Actuation | |
| Design Standard | |
| Suitable Media | |
| Application Industry | Building & Facilities, Chemical & Petrochemical, General Chemical, HVAC Systems, Industrial & Manufacturing, Oil & Gas, Water & Wastewater Treatment |
| Certifications | |
| OEM / Custom Service | Custom Body Material, Custom Coating / Surface Treatment, Custom Design / Engineering, Custom Logo / Branding, Custom Packaging, Custom Pressure Rating, ODM Service, OEM Service, Private Label |
Product Specifications
Product Usage
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Chemical processing
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Petroleum and oil refineries
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Power generation
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Marine and shipboard systems
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Water treatment and handling
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Industrial facilities
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Gas industry
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Air and natural gas applications
Construction Characteristics
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Body material: ASTM A351 CF8M (SS316)
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Bonnet material: ASTM A351 CF8M (SS316)
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Screen material: SS316 wire mesh
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Gasket material: Teflon (PTFE)
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O-ring material: Viton
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Blow-off / Drain connection material: ASTM A351 CF8M
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Female threaded end connections (NPT)
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Investment casting construction
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Working pressure: 800 PSI (Class 800)
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Screen options: 1.0mm hole single net / 40 mesh double net / 60 mesh double net / 80 mesh double net / 100 mesh double net
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Easy-in and easy-out design for clearing
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Manual cleaning by shutting down the line and removing the strainer cap
Certification / Compliance Standards
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Design Standard: ASME B16.34
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End Connections: ASME B1.20.1 (NPT)
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Test and Inspection: API 598
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Pressure Rating: Class 800 (800 PSI)
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Body Material: ASTM A351 CF8M
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Screen Material: SS316
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Body: ASTM A351 CF8M
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Bonnet: ASTM A351 CF8M
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Screen: SS316 wire mesh
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Gasket: Teflon (PTFE)
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O-ring: Viton
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Blow-off / Drain: ASTM A351 CF8M
| DN | A | H | L | W | D |
|---|---|---|---|---|---|
| 1/4″ | 10 | 51 | 65 | 2 | 1 |
| 3/8″ | 12 | 51 | 65 | 2 | 1 |
| 1/2″ | 15 | 51 | 65 | 2 | 1 |
| 3/4″ | 20 | 60 | 80 | 2 | 1 |
| 1″ | 25 | 72 | 90 | 2 | 1 |
| 1-1/4″ | 32 | 77 | 105 | 2 | 1 |
| 1-1/2″ | 40 | 87 | 120 | 2 | 1 |
| 2″ | 50 | 103 | 140 | 2 | 1 |
| 2-1/2″ | 65 | 124 | 180 | 2 | 1 |
| 3″ | 80 | 143 | 200 | 2 | 1 |
Notes:
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All dimensions are in mm.
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For exact dimensions and weights, please contact us for more details.
Industrial Applications
Why Choose BallValve Technology’s ASTM A351 CF8M Threaded Y-Strainers?
1) CE (2014/68/EU), UKCA, API, ASME, ISO 9001 certified. Full compliance with global pressure equipment and quality management standards – no regional restrictions, no documentation gaps.
2) Corrosion-resistant CF8M stainless steel construction. The ASTM A351 CF8M body and bonnet provide excellent resistance to corrosion and pitting, ensuring long service life in demanding environments including chemical processing, marine, and petroleum applications.
3) SS316 wire mesh screen for durability and reliability. The SS316 stainless steel wire mesh screen offers superior corrosion and wear resistance, maintaining filtration efficiency over extended periods.
4) Multiple screen options for different applications. Choose from 1.0mm hole single net or 40, 60, 80, 100 mesh double net to suit specific filtration requirements.
5) Teflon gasket and Viton O-ring for reliable sealing. The Teflon gasket provides excellent chemical resistance, while the Viton O-ring offers superior performance in oil and chemical environments.
6) Easy-in and easy-out design for cleaning. The screen is manually cleaned by shutting down the line and removing the strainer cap, making maintenance simple and straightforward.
7) Class 800 pressure rating for demanding services. Rated to 800 PSI, this strainer is suitable for a wide range of high-pressure applications including oil and gas, chemical, and hydraulic systems.
8) Ten years of field wear data back every design margin. When you order a strainer, you receive an anonymized summary of identical or similar service duty (fluid, temperature, cycle frequency) from our field archives, including observed screen wear patterns, blowdown intervals, and maintenance recommendations.
9) Documentation is not an extra – it’s a serial number’s companion. Enter your strainer’s serial number on our portal: you get EN 10204 3.1 mill certificates, NDE reports, material verification, and the original assembly log. No separate request form, no waiting.
10) Performance witness test is your right, not a premium. Any strainer order includes one free witness test (your inspector or a third party) at our facility, with a 48‑hour notice. Witness includes hydrostatic shell test, leakage test, and screen integrity verification. No “witness fee”, no minimum quantity.
Frequently Asked Questions
Cleaning frequency depends on media cleanliness, mesh size, and flow rate. Monitor pressure drop — clean when it increases by 50% from the clean reading (or exceeds 0.5–0.7 bar). Clean gas lines may need annual cleaning; dirty water may need weekly.
Screen lifespan (typically 1–5 years) is affected by abrasion, corrosion, and physical damage during cleaning. Keep a spare screen to minimize downtime.
Yes. Our Y-Strainers are designed per ASME B16.34 and tested per API 598. Cast iron bodies comply with ASME B16.1. End connections follow ASME B16.5, B16.25, or B16.11. Potable water models feature NSF/ANSI 61 & 372 certification. Material test certificates (EN 10204 3.1/3.2) are available upon request.
Y-Strainers are passive devices and do not have actuator mounting interfaces for standard operation. For automated blowdown, we can supply a mounting pad for a ball valve actuator on the blowdown port — this is a custom option. Please contact us for specific requirements.
Y-Strainers don’t have “full-port” designs like ball valves. Flow restriction depends on:
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Screen open area ratio (OAR): Typically 2:1 to 3:1 for Y-Strainers.
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Mesh size: Finer mesh increases pressure drop.
Higher OAR = lower pressure drop and longer cleaning intervals. For critical low-pressure-drop applications, consider a larger strainer or basket strainer.
Yes, with correct material selection:
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Steam: WCB with graphite seals handles up to 425°C; chrome-moly for higher temperatures.
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Air: Carbon steel is typically sufficient.
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Acid: Requires 316SS (CF8M), alloys (Hastelloy, MONEL), or PTFE-lined bodies. Screen material must match the acid type.
Always verify the pressure-temperature rating for your specific media.
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Installation: Install with screen pointing downward in horizontal lines. Match flow arrow direction. Do not overtighten bolts.
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Maintenance: Depressurize before opening cover. Replace gasket if damaged. After reassembly, perform a low-pressure leak test.
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Torque: Use a calibrated wrench and star pattern. Typical torque: 50–150 N·m depending on bolt size.
The choice depends on the size of particles you need to capture. As a general guideline:
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10–20 Mesh (≈841–2000 µm): For coarse straining, such as removing weld slag, rust, or large debris from new pipelines.
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40–60 Mesh (≈250–400 µm): For general protection of pumps, control valves, and meters.
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80–100 Mesh (≈149–177 µm): For fine straining, such as protecting spray nozzles or steam traps.
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Perforated plates (1/32″–1/4″): Used when strength is more important than fine filtration.
If you’re unsure, we recommend starting with a 20–40 mesh for most liquid applications. We also offer custom mesh sizes upon request.
Our Y-Strainers are available in sizes from ½” (DN15) to 24″ (DN600), with pressure ratings ranging from Class 125 to Class 2500 (PN10 to PN420). The specific rating depends on the body material and connection type. For example, cast iron bodies typically follow Class 125/250 per ASME B16.1, while steel bodies follow Class 150/300/600 per ASME B16.5 and B16.34. Please refer to our product datasheets for detailed specifications by model.
| Stage | Procedure | Description |
|---|---|---|
| Before Production | PMI (Positive Material Identification) test | Raw material verification |
| In-Production | Dimensional checks | At critical machining stages |
| Post-Production | High-pressure hydrostatic shell test (1.5× rated pressure) Low-pressure air seat test (0.6 MPa) to verify shut-off Optional tests: helium leak test (ISO 15848), fire-safe test, or cryogenic test | Final assembly testing |
| Quality Inspection | Marking verification, coating/painting thickness measurement, and preparation of traceable test reports | Visual & documentary check |
All test records are archived for a minimum of 10 years and can be provided with each shipment. Or you can specify any third-party test institutions.
Our manufacturing facility is certified to ISO 9001:2015 for design, production, and after-sales service of industrial valves. Additionally, we hold ISO 14001:2015 (environmental management) and ISO 45001:2018 (occupational health and safety). All our ball valves for the European market comply with PED 2014/68/EU, and we can supply valves with ATEX certification for explosive atmospheres upon request. Our quality system is audited annually by third-party notified bodies.
Absolutely. For standard ball valves, we can offer off-the-shelf samples of common sizes (1/2″ to 4″) at a discounted price, with a refundable deposit that can be credited toward a future bulk order. For custom or larger sizes, we accept small trial orders (as few as 2–5 pieces) after a non-recurring engineering (NRE) fee is agreed. The NRE fee will be waived once the customer proceeds to a production order of 50 pieces or more.
We offer flexible payment terms based on order value and customer history. For standard orders: 30% deposit by T/T (wire transfer) with 70% balance before shipping. For larger or repeat customers, we can consider 20% deposit + 80% balance payment.
- For standard models, the minimum order quantity (MOQ) is usually 100 pieces per size. For sizes that are in stock, it takes 3 to 5 business days to ship after you place your order. Our usual lead time for making standard catalog valves that aren’t in stock is 15 to 25 business days after we get your order and approve the drawing.
- Custom models (with special materials, pressure classes, actuator mounting, custom logos, etc.): The minimum order quantity (MOQ) varies, so please get in touch with our sales team for a full quote. The lead time is usually 15 to 45 days, depending on how complicated the process is. Also, we offer a mixed-model consolidation service for distributors to help them deal with their inventory problems.
Looking for A Reliable Industrial Valve Manufacturer?
Our factory is equipped with a complete set of production facilities (three-axis, four-axis, and five-axis CNC machining centers, large vertical lathes, special process processing equipment, as well as fully automatic welding and sealing surface grinding equipment, etc.) and a testing laboratory, and implements a strict quality management system that has obtained ISO 9001 certification.
If you choose to cooperate with us, we will provide a complete set of certifications for each batch of valves: API 6D, API 600, API 607, CE/PED, TSG, ISO 15848-1 or other industry access certifications for specific fields. If you require us to provide testing and quality control, we will carry out non-destructive testing (NDT), material spectroscopy analysis, high-pressure gas tests, low-pressure airtight tests, torque tests, life cycle tests, and so on.
Each of our valves has a unique furnace batch number and serial number, which can be traced back to the raw material composition and assembly records. We also offer OEM/ODM services, and can customize special valves (design, materials, diameter, tolerance…) that meet the requirements of specific application scenarios for your special projects.
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