Y Type Strainer 300LBS - ANSI Class 300, 1/2 inch to 36 inch
Tengs Valve supplies high-quality Y Type Strainers for ANSI Class 300LBS, manufactured with bolted cover design and available with flanged (RF) or Butt Weld (BW) ends. Sizes range from 1/2″ to 36″ (DN15 to DN900). Body materials include cast carbon steel (WCB, LCB, LCC), stainless steel (CF8, CF8M, CF3, CF3M), and duplex stainless steel (A890-4A, 5A). Screen materials are SS304, SS316 and DSS with mesh sizes from 10 to 400 mesh. Ideal for water, gas, oil, and steam service in medium-pressure industrial piping systems.
Specifications For Y Type Strainer 300LBS
• Sizes: 1/2″ to 36″ (DN15 to DN900)
• Pressure Rating: ANSI 300LBS / Class 300
• Suitable Medium: Water, gas, oil, steam, etc.
• Body Materials: WCB, LCB, LCC, CF8, CF8M, CF3, CF3M, A890-4A, 5A, etc.
• Screen Materials: Stainless Steel (304SS, 316SS, DSS)
• Mesh Sizes: 10, 20, 40, 60, 100, 200, 400 mesh, etc.
• End Connections: Butt Weld (BW), Flanged (RF)
• Cover Type: Bolted Cover (B.C.)
• Design Standard: API 598, ASME B16.34, ASME B16.5
• Temperature Range: -29°C to 425°C (-20°F to 800°F)
✓ Class 300 Y strainer provides reliable filtration for medium-pressure water, gas, oil and steam lines
Y Type Strainer Pressure Class Comparison: Class 150 vs 300 vs 600
| Pressure Class | Design Pressure (bar) | Design Pressure (psi) | Typical Application |
|---|---|---|---|
| Class 150 | 19.6 | 285 | Water networks, HVAC, low-pressure industrial service |
| Class 300 | 51 | 740 | General hydrocarbon, process piping, medium-pressure service |
| Class 600 | 102 | 1,480 | High-pressure process, refinery, power plant |
Reference: ASME B16.34. Class 300 is the standard choice for medium-pressure process and general hydrocarbon service. Class 150 is more economical for low-pressure water and HVAC; Class 600 is for high-pressure refinery and power plant service.
Class 300 Y Type Strainer Common Material Selection
| Body Material | Standard | Key Characteristic | Typical Application |
|---|---|---|---|
| A216-WCB | ASTM A216 | Standard carbon steel, cost-effective | Water, steam, oil, general process piping |
| A352-LCB / LCC | ASTM A352 | Low-temperature carbon steel | Cold climate and low-temperature service down to -46°C |
| A351-CF8M (SS316) | ASTM A351 | Mo-bearing, chloride resistance | Chemical, offshore, marine, corrosive media |
| A351-CF3M | ASTM A351 | Low-carbon, weld-friendly | Welded construction, corrosive service |
| A890/A995 4A / 5A | ASTM A890 / A995 | Duplex stainless, high-chloride resistance | Seawater, desalination, offshore, sour service |
Reference: For Class 300 medium-pressure service, WCB is standard for general process piping; CF8M and duplex stainless are selected for corrosive and offshore media. Low-temperature LCB/LCC is available for cold climate service.
Y Type Strainer 300LBS Mesh Selection Reference
| Mesh Size | Aperture (mm) | Application Medium |
|---|---|---|
| 20 mesh | 0.84 | Medium-pressure water network, pump suction protection |
| 40 mesh | 0.40 | Medium-pressure steam and gas service |
| 60 mesh | 0.25 | General process piping, oil and gas filtration |
| 80 mesh | 0.18 | Fine process filtration, chemical feed lines |
| 100 mesh | 0.15 | Fine oil and chemical filtration, instrument protection |
Reference: Class 300 Y strainers are typically supplied with 40–100 mesh SS screens for medium-pressure process service. Coarser mesh 20 mesh is used for water network protection; finer mesh up to 400 mesh is available on request.
Y Type Strainer 300LBS Main Parts and Material List
| No. | Part Name | Material |
|---|---|---|
| 01 | Body | A216-WCB, A352-LCB/LCC, A351-CF8, A351-CF3, A351-CF8M, A351-CF3M, A890/A995 4A/5A |
| 02 | Screen | 304SS, 316SS, DSS |
| 03 | Gasket | Graphite + Stainless Steel (304SS, 316SS) |
| 04 | Cover | A105 / WCB, A182-F304, A182-F304L, A182-F316, A182-F316L |
| 05 | Bolt | A193 B7, A193 B8, A193 B8M |
| 06 | Nut | A194 2H, A194 8, A194 8M |
| 07 | Drain Plug | A193 B7, A193 B8, A193 B8M |
Reference: API 598, ASME B16.34. Materials may vary by model and pressure rating. Contact us for confirmed material certificate.
Dimensions for 300LBS Y Type Strainer
Reference: ASME B16.5, ASME B16.10. Dimensions may vary by manufacturer. Contact us for confirmed drawing and quotation.
Y Type Strainer 300LBS Applications
• Water treatment and distribution: municipal water networks, pump suction protection, irrigation systems.
• HVAC and district heating: chilled water, hot water, and steam distribution in commercial buildings.
• General industrial service: medium-pressure oil, gas, and steam pipelines requiring reliable filtration.
• Chemical processing: reagent feed lines and corrosive media filtration with CF8 / CF8M body.
• Marine and offshore: seawater and offshore service with duplex stainless body (4A / 5A).
• Fire protection: fire main lines and sprinkler systems where debris protection is critical.
FAQ - Y Type Strainer 300LBS
Q1: What is the pressure rating of Class 300 Y type strainer?
A: Class 300 Y type strainer has a design pressure of 51 bar (740 psi) at ambient temperature, in accordance with ASME B16.34. It is suitable for medium-pressure industrial service such as general hydrocarbon, process piping and steam distribution. For higher pressure, Class 600, 900, and 1500 are also available.
Q2: What is the maximum size available for Class 300 Y type strainers?
A: Class 300 Y type strainers are available from 1/2 inch to 36 inch (DN15 to DN900). Cast type is used for sizes up to 24 inch, and welded/fabricated type is available for larger sizes up to 36 inch and beyond. For sizes above 24 inch, fabricated construction offers shorter lead time and custom dimensions.
Q3: What is the difference between RF and BW ends for Class 300 Y strainers?
A: RF (Raised Face) flanged ends allow easy installation and removal for maintenance — preferred for pipeline service where strainers are periodically cleaned. BW (Butt Weld) ends provide a permanent leak-tight welded connection — preferred for high-integrity service where no leakage is acceptable. For Class 300, both are commonly used; RF is more common for general industrial service, and BW for chemical and steam service.
Q4: What body materials are recommended for Class 300 Y strainers?
A: For general water, steam, and non-corrosive service, WCB carbon steel is the most economical choice. For low-temperature service down to -46°C, LCB or LCC is recommended. For corrosive media, CF8 (SS304) or CF8M (SS316) is preferred. For seawater, desalination, and offshore service, duplex stainless steel (A890-4A or 5A) offers the best chloride resistance.
Q5: How do I select the right mesh size for Class 300 water service?
A: For water service, industry practice is to use 18–30 mesh. Standard Y strainers are supplied with 20–40 mesh SS screens. For pump protection, select a mesh that captures particles at least 1/3 the size of the smallest critical clearance in downstream equipment. For finer filtration in instrument lines, 100–200 mesh can be specified. Please specify mesh size when requesting a quotation.
Q6: How do I maintain a Class 300 Y strainer?
A: Class 300 Y strainer maintenance is simple: isolate the strainer, depressurize, remove the cover bolts (bolted cover design), take out the screen, clean or replace it, and reassemble. The Y-shaped body allows screen removal without disconnecting the pipeline. For continuous operation, a bypass line or dual-strainer configuration is recommended. Screen replacement is recommended when the pressure drop exceeds the initial clean-screen value by 0.5–1.0 bar.
Request a Quote for Y Type Strainer 300LBS
Send us your size, pressure rating, material, end connection, mesh size, and quantity. Our team will reply within 24 hours with price, drawing, and delivery time.
Email: sales@tengsvalve.com
Website: Request a Quote Online
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