T Type Strainer 300LBS - ANSI Class 300, Straight and Angle Type, 2 inch to 36 inch
Tengs Valve is a China T Type Strainer exporter, offering Straight and Angle Type T Strainers in ANSI Class 300LBS. Manufactured with bolted cover and flanged RF or Butt Weld (BW) ends to ASME B16.5 (under 24 inch) or ASME B16.47 A (above 24 inch). Sizes range from 2 inch to 36 inch (DN50 to DN900). Body materials include carbon steel (WPB, WCB, A106), low-temperature carbon steel (LCB, WPL6), stainless steel (CF8, CF8M, CF3, CF3M, SS304, SS304L, SS316, SS316L) and duplex stainless steel. Screens are supplied in 304SS and 316SS with mesh sizes from 20 to 400 mesh. The T type strainer provides straight-through flow with excellent flow characteristics, ideal for medium-pressure process piping, refinery, power plant, oil and gas transmission and general industrial filtration.
Specifications For T Type Strainer 300LBS
• Strainer Type: T Type Strainer (T Strainer)
• Available Types: Straight Type, Angle Type
• Sizes: 2 inch to 36 inch (DN50 to DN900)
• Pressure Rating: ANSI 300LBS / Class 300
• Suitable Medium: Water, gas, oil, steam etc.
• Body Material: WPB, WCB, A106, LCB, WPL6, CF8, CF8M, CF3, CF3M, SS304, SS304L, SS316, SS316L
• Screen: Stainless Steel (304SS, 316SS)
• Mesh Size: 20, 40, 60, 80, 100, 200, 400 mesh etc.
• End Connection: Butt Weld (BW), Flanged RF (Raised Face)
• Cover Type: Bolted Cover
• Design and Manufacture: ASME B16.34
• Inspection and Test: API 598
• Flange Dimension: ASME B16.5 (under 24 inch), ASME B16.47 A (above 24 inch)
• BW End Dimension: ASME B16.25
• Face to Face: ASME B16.10
• Others: On request
✓ Class 300 T type strainer provides medium-pressure straight-through filtration up to 36 inch for process piping and industrial service
T Type Strainer Pressure Rating Comparison: Class 150 vs 300 vs 600
| Pressure Class | Design Pressure (bar) | Design Pressure (psi) | Typical Application |
|---|---|---|---|
| ANSI Class 150 | 19.6 | 285 | Water distribution, HVAC, low-pressure pipeline |
| ANSI Class 300 | 51 | 740 | General hydrocarbon, process piping, medium-pressure service, refinery |
| ANSI Class 600 | 102 | 1,480 | High-pressure process, refinery, power plant |
Reference: ASME B16.34. Class 300 is the standard pressure class for medium-pressure process piping, refinery and general hydrocarbon service. Class 150 is more economical for low-pressure water; Class 600 is used for high-pressure service.
Class 300 T Type Strainer Body Material Selection
| Body Material | Standard | Key Characteristic | Typical Application |
|---|---|---|---|
| A234-WPB / A106 | ASTM A234 / A106 | Wrought and seamless carbon steel, weldable for Class 300 | Water, steam, oil, gas, medium-pressure process piping |
| A216-WCB | ASTM A216 | Cast carbon steel, cost-effective | Water, oil, gas, general industrial service |
| A352-LCB / A350-LF2 / WPL6 | ASTM A352 / A350 | Low-temperature carbon steel to -46°C | Cold climate, LNG, low-temperature service |
| A351-CF8 (SS304) / CF3 (SS304L) | ASTM A351 | General corrosion resistance | Water treatment, food and beverage, general chemical |
| A351-CF8M (SS316) / CF3M (SS316L) | ASTM A351 | Mo-bearing, chloride resistance | Chemical, marine, offshore, chloride-containing media |
| Duplex / Super Duplex | ASTM A890 / A995 | High-chloride and sour resistance | Seawater, desalination, offshore, sour service |
Reference: ASTM A234, A106, A216, A352, A350, A351, A890. WPB and A106 are the standard wrought and seamless carbon steel choices for Class 300 T type strainer. LCB and WPL6 are selected for low-temperature service down to -46°C; CF8M and duplex are selected for corrosive service.
T Type Strainer Working Principle: Straight Type and Angle Type
| Type | Flow Direction | Screen Orientation | Key Characteristic |
|---|---|---|---|
| Straight Type | Straight through flow | Vertical (downward) or horizontal side branch | Lowest pressure drop, ideal for high-flow pipeline |
| Angle Type | Right angle (90°) flow | Horizontal side branch | Replaces standard elbow, saves space in compact layout |
Reference: ASME B16.34, API 598. Straight type T strainer is installed horizontally with the branch section hanging downward for liquid service; angle type is installed at 90° pipeline corners and can replace a standard elbow. For gas and steam service, the branch section points sideways to prevent condensate pooling.
Main Parts and Material List For T Type Strainer 300LBS
| No. | Part Name | Carbon Steel | Low-Temp Steel | Stainless Steel |
|---|---|---|---|---|
| 01 | Body / Tee | A234-WPB, A106, A216-WCB | A352-LCB, WPL6 | A351-CF8, CF3, CF8M, CF3M; SS304, SS304L, SS316, SS316L |
| 02 | Flange | A105 | A350-LF2 | A182-F304 / F304L / F316 / F316L |
| 03 | Cover | A105 | A350-LF2 | A182-F304 / F304L / F316 / F316L |
| 04 | Bolt | A193 B7 | A320 L7 | A193 B8 / B8M |
| 05 | Nut | A194 2H | A194 4 | A194 8 / 8M |
| 06 | Gasket | Graphite + 304SS / 316SS / 304LSS / 316LSS | ||
| 07 | Screen | 304SS / 316SS | ||
| 08 | Drain Plug | A105 | A350-LF2 | A182-F304 / F304L / F316 / F316L |
Reference: ASME B16.34, API 598, ASTM A234, A106, A216, A352, A350, A351, A182, A193, A194, A320. This page offers the widest material range in the T type strainer series, including low-temperature steel (LCB, WPL6, LF2). Materials may vary by model and pressure rating. Contact us for confirmed material certificate to EN 10204 3.1.
Dimensions For 300LBS T Type Strainer
Reference: ASME B16.5, ASME B16.47 A, ASME B16.10. Dimensions may vary by manufacturer. Contact us for confirmed drawing and quotation.
T Type Strainer 300LBS Applications
• Oil and gas process piping: refinery process lines, pump discharge and compressor protection in Class 300 service.
• Power plant steam and feedwater: medium-pressure steam mains, feedwater and condensate lines with ANSI Class 300 rating.
• Chemical and petrochemical: medium-pressure process lines, reagent feed and general chemical filtration with SS304 / SS316 / SS304L / SS316L body.
• High-pressure water transmission: large pump discharge and main water lines requiring Class 300 rating with straight-through flow.
• Low-temperature service: cold climate and LNG pipeline requiring LCB / WPL6 / LF2 body down to -46°C.
• HVAC and district heating: medium-pressure supply and return lines with Class 300 rating for European and ASME standard projects.
FAQ - T Type Strainer 300LBS
Q1: What is a T Type Strainer 300LBS?
A: A T Type Strainer 300LBS (also called T Strainer) is a fabricated pipeline strainer with a compact T-shaped shell, rated to ANSI Class 300 (51 bar / 740 psi at ambient temperature). It removes foreign particles and impurities from liquid and gases using a perforated screen or wire mesh basket, protecting downstream pumps, valves, meters and other equipment. The T type strainer 300LBS is available in Straight Type and Angle Type, and is the standard choice for medium-pressure process piping, refinery and general hydrocarbon service up to 36 inch (DN900).
Q2: What is the size range and end connection available?
A: T type strainer 300LBS is available from 2 inch to 36 inch (DN50 to DN900). End connections include Flanged RF (Raised Face) to ASME B16.5 (under 24 inch) or ASME B16.47 A (above 24 inch), and Butt Weld (BW) to ASME B16.25. Face-to-face dimension follows ASME B16.10. Cover type is bolted cover (blind flange) with drain plug for maintenance. The T type strainer is particularly suitable for large diameter service, with the tee body fabricated from wrought steel materials.
Q3: What body materials are available for T type strainer 300LBS?
A: This page offers the widest material range in the T type strainer series. Body materials include carbon steel (A234-WPB, A106, A216-WCB), low-temperature carbon steel (A352-LCB, WPL6), stainless steel (A351-CF8, CF8M, CF3, CF3M and SS304, SS304L, SS316, SS316L) and duplex stainless steel. Flange and cover are in A105 / A350-LF2 for carbon and low-temperature service, or A182-F304 / F304L / F316 / F316L for stainless steel. For low-temperature service down to -46°C, LCB, WPL6 and A350-LF2 are the preferred choices; for corrosive service, CF8M and duplex are selected.
Q4: What is the difference between RF and BW ends for T type strainer 300LBS?
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, buried pipeline or where no leakage is acceptable. For Class 300 T type strainer, both are commonly used; RF is more common for general industrial service, and BW for high-integrity and buried pipelines. RTJ end is available on request for higher pressure classes.
Q5: What screen and mesh sizes are available?
A: Screens are supplied in stainless steel 304SS and 316SS. Mesh sizes include 20, 40, 60, 80, 100, 200 and 400 mesh, tailor-made to customer requirements. For medium-pressure process piping and pump protection, 40 to 100 mesh is common; for fine chemical and instrument protection, 100 to 200 mesh is specified. The perforated plate and wire mesh can be combined for high dirt load service. Please specify the mesh size when requesting a quotation.
Q6: How do I maintain a T type strainer 300LBS?
A: Maintenance is simple: isolate the strainer, depressurize, open the drain plug to drain the strainer, remove the blind flange cover bolts, take out the screen, clean or replace it, install a new gasket, and reassemble. The T type strainer body has a bolted cover (blind flange) on the branch chamber for easy access. Because the branch chamber is isolated from the main flow path, opening it does not cause a massive spill of process fluid. For large diameter T type strainer (above 24 inch), a davit arm design is recommended for heavy cover lifting without crane. Screen replacement is recommended when the pressure drop exceeds the initial clean-screen value by 0.5-1.0 bar.
Request a Quote for T Type Strainer 300LBS
Send us your size (2 to 36 inch or DN50 to DN900), pressure rating (Class 300LBS), type (Straight / Angle), body material (WPB / WCB / A106 / LCB / WPL6 / CF8 / CF8M / CF3 / CF3M / SS304 / SS304L / SS316 / SS316L), end connection (Flanged RF or BW), screen material (304SS / 316SS), 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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