T Strainer - T Type Strainer, Straight and Angle Type, ANSI 150-300LB, DIN PN10-PN40, 2 inch to 36 inch
Tengs Valve is a China T Strainer (T Type Strainer) supplier and manufacturer, offering Fabricated Type, Welded Type and Cast Type T strainers. A T strainer eliminates a small amount of impurities and particles from liquid and gases, protecting compressors, pumps and other equipment in the pipe system. It is widely used in the oil and petroleum industry, water treatment systems, power generation and chemical processing. Materials include carbon steel (WPB) and stainless steel (SS304, SS316), with flanged and BW ends to ANSI Class 150LB to 300LB and DIN PN10 to PN40. Sizes range up to 36 inch (DN900). Both Straight Type and Angle Type are available. The T strainer shell structure differs from the Tee strainer; please refer to our Tee Strainer page for more details.
T Strainer Specifications
• Strainer Type: T Type Strainer (T Strainer)
• Available Types: Straight Type, Angle Type
• Body Construction: Fabricated Type, Welded Type, Cast Type
• Sizes: 2 inch to 36 inch (DN50 to DN900)
• Pressure Rating (ANSI): Class 150LB, 300LB
• Pressure Rating (DIN): PN10, PN16, PN25, PN40
• Suitable Medium: Water, gas, oil, steam etc.
• Body Material: Carbon Steel WPB; Stainless Steel SS304, SS316
• Screen Material: Stainless Steel 304SS, 316SS
• End Connection: Flanged (RF / FF), Butt Weld (BW)
• Cover Type: Bolted Cover (Blind Flange)
• Drain Connection: Drain Plug
• Design and Manufacture: ASME B16.34
• Inspection and Test: API 598
• Flange Dimension: ASME B16.5 (under 24 inch), ASME B16.47 (above 24 inch)
• BW End Dimension: ASME B16.25
• Face to Face: ASME B16.10
✓ T strainer provides straight-through flow with low pressure drop, available in straight and angle type for flexible pipeline layout
T Strainer Standards
1. Design and Manufacture: ASME B16.34
2. Inspection and Test: API 598
3. End Flange Dimension: ASME B16.5, ASME B16.47
4. BW End Dimension: ASME B16.25
5. Face to Face: ASME B16.10
6. Pressure-Temperature Ratings: ASME B16.34
T Strainer vs Tee Strainer: Shell Structure Difference
| Item | T Strainer | Tee Strainer |
|---|---|---|
| Shell Structure | Straight or Angle type, compact shell with side branch | Equal tee fitting with branch closed by blind flange |
| Flow Configuration | Straight through or right angle flow | Straight through flow only |
| Installation | Can replace standard elbow in angle type | Requires straight pipe run |
| Typical Application | Steam, water, oil, gas; compact piping layout | Large diameter, high-flow, permanent protection |
Reference: ASME B16.34, API 598. T strainer offers both straight and angle flow configurations, while Tee strainer provides straight-through flow only.
T 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.
Materials List For T Type Strainer
| No. | Part Name | Carbon Steel | SS304 / 304L | SS316 / 316L |
|---|---|---|---|---|
| 01 | Body / Tee | A234-WPB | 304SS / 304LSS | 316SS / 316LSS |
| 02 | Flange | A105 | A182-F304 / F304L | A182-F316 / F316L |
| 03 | Cover | A105 | A182-F304 / F304L | A182-F316 / F316L |
| 04 | Bolt | A193 B7 | A193 B8 | A193 B8M |
| 05 | Nut | A194 2H | A194 8 | A194 8M |
| 06 | Gasket | Graphite + 304SS / 316SS / 304LSS / 316LSS | ||
| 07 | Screen | 304SS / 316SS | ||
| 08 | Drain Plug | A105 | A182-F304 / F304L | A182-F316 / F316L |
Reference: ASME B16.34, API 598, ASTM A234, A105, A182, A193, A194. Materials may vary by model and pressure rating. Contact us for confirmed material certificate to EN 10204 3.1.
T Strainer Pressure Rating Comparison: ANSI vs DIN
| Standard | Pressure Rating | Design Pressure (bar) | Design Pressure (psi) | Typical Application |
|---|---|---|---|---|
| ANSI | Class 150LB | 19.6 | 285 | Water distribution, HVAC, steam, general industrial service |
| ANSI | Class 300LB | 51 | 740 | General hydrocarbon, process piping, medium-pressure service |
| DIN | PN10 / PN16 | 10 / 16 | 145 / 232 | Water, HVAC, district heating, general industrial service |
| DIN | PN25 / PN40 | 25 / 40 | 362 / 580 | Medium-high pressure steam, process water, chemical service |
Reference: ASME B16.34, DIN EN 1092-1. T strainer is available in both ANSI and DIN pressure ratings. Class 150 and PN16 are the most common ratings for general industrial service.
T Strainer Applications
• Oil and gas industry: filtering heavy crude, process fluids and hydrocarbons; protection of pumps, compressors and meters in pipeline systems.
• Water treatment systems: municipal water networks, pump suction and discharge protection, and filtration plants requiring reliable debris removal.
• Power generation: removing particulate from feedwater, condensate and cooling loops; protection of boilers and turbines.
• Chemical and petrochemical: protecting sensitive equipment from process debris; corrosive media filtration with SS304 / SS316 body.
• Pharmaceutical and food processing: pre-filtration in hygienic service with stainless steel body and screen.
• Desalination and cooling water: seawater intake and cooling water systems requiring large diameter T strainer with low pressure drop.
FAQ - T Strainer (T Type Strainer)
Q1: What is a T Strainer (T Type Strainer)?
A: A T Strainer (T Type Strainer) is a pipeline filtration device that eliminates a small amount of impurities and particles from liquid and gases, protecting compressors, pumps and other equipment in the pipe system. It has a compact T-shaped shell with a side branch housing a removable filter element. The T strainer is available in Straight Type (straight-through flow) and Angle Type (right angle flow), and can be fabricated from carbon steel or stainless steel. It is widely used in the oil and petroleum industry, water treatment systems, power generation and chemical processing.
Q2: What is the difference between Straight Type and Angle Type T Strainer?
A: Straight Type T Strainer has a straight-through flow configuration, with the filter element housed in a vertical or horizontal side branch. It provides the lowest pressure drop and is ideal for high-flow pipeline service. Angle Type T Strainer has a right angle (90°) flow configuration, allowing it to replace a standard elbow in the pipeline. This saves space and is particularly useful in compact piping layouts or at pipeline corners. Both types are available in flanged or BW ends and can be installed horizontally or vertically depending on the service.
Q3: What is the difference between T Strainer and Tee Strainer?
A: T Strainer and Tee Strainer are often used interchangeably, but their shell structures differ. The Tee Strainer typically uses an equal tee fitting with the branch closed by a blind flange cover, providing straight-through flow only. The T Strainer has a more compact shell structure with a side branch, and is available in both Straight Type and Angle Type configurations. The T Strainer is more flexible in piping layout and can replace a standard elbow in the Angle Type. For more details on Tee Strainer, please visit our Tee Strainer page.
Q4: What is the size range and pressure rating available?
A: T strainers are available from 2 inch to 36 inch (DN50 to DN900). Pressure ratings include ANSI Class 150LB (19.6 bar / 285 psi) and Class 300LB (51 bar / 740 psi), as well as DIN PN10, PN16, PN25 and PN40. End connections include Flanged RF / FF to ASME B16.5 (under 24 inch) or ASME B16.47 (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.
Q5: What body materials are available for T Strainer?
A: Body materials include carbon steel A234-WPB, stainless steel 304SS / 304LSS / 316SS / 316LSS, with flange and cover in A105 for carbon steel or A182-F304 / F304L / F316 / F316L for stainless steel. The screen is 304SS or 316SS. Gasket is graphite + 304SS / 316SS / 304LSS / 316LSS. For high-chloride or seawater service, duplex and super duplex materials are available on request. Tailor-made materials and special designs are also available.
Q6: How do I maintain a T Strainer?
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 strainer 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, making the cleaning process safer and cleaner for operators. 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 Strainer (T Type Strainer)
Send us your size (2 to 36 inch or DN50 to DN900), pressure rating (Class 150LB / 300LB or DIN PN10-PN40), body construction (Fabricated / Welded / Cast), type (Straight / Angle), body material (WPB / SS304 / SS316), end connection (Flanged RF / FF or BW), screen material (304SS / 316SS), 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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T Strainer Dimension Details
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