Butt Welded Ended Tee Strainer - A234-WPB Carbon Steel, Class 150LB, 2 inch to 48 inch
Tengs Valve supplies high-quality Butt Welded Ended Tee Strainers (BW Tee Type Strainers) in A234-WPB carbon steel, with Class 150LB / PN20 pressure rating. The fabricated steel body is available in Straight Type with weld neck flange with blind flange cover. Sizes range from 2 inch to 48 inch (DN50 to DN1200). Screens are supplied in 304SS and 316SS with perforated hole sizes from 1mm to 10mm and mesh sizes from 10 to 200 mesh. Drain connection is plug or flanged; NDT (non-destructive testing) is available on request. The BW tee strainer provides permanent leak-tight welded connection with straight-through flow, ideal for large diameter main pipeline, buried pipeline, high-integrity service and high-flow water, oil and gas transmission.
BW Tee Strainer Specification
• Type of Strainer: Tee Strainer, Tee Type Strainer
• Type of End Connection: Butt Welded (BW)
• Type of Body: Straight, Welded / Fabricated
• Body Material: Carbon Steel A234 WPB, A106
• Screen: Stainless Steel (304SS, 316SS)
• Wire Mesh: Stainless Steel
• Type of Cover (Bonnet): Weld Neck Flange with Blind Flange
• Perforated Hole Size: 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm etc.
• Mesh Size: 10, 20, 40, 60, 80, 100, 200 mesh etc.
• Range of Sizes: 2 inch to 48 inch (DN50 to DN1200)
• Pressure Rating: Class 150LB / PN20
• Type of Drain Connection: Plug, Flanged
• Special Requirement: NDT Available
• Design and Manufacture: ASME B16.34
• Inspection and Test: API 598
• BW End Dimension: ASME B16.25
• Face to Face: ASME B16.10
✓ BW tee strainer provides permanent leak-tight welded connection with straight-through flow for large diameter and buried pipeline service up to 48 inch
Tee Strainer Standards
1. Design and Manufacture: ASME B16.34
2. Inspection and Test: API 598
3. BW End Dimension: ASME B16.25
4. Face to Face: ASME B16.10
5. Pressure-Temperature Ratings: ASME B16.34
BW vs Flanged Tee Strainer Selection Guide
| Item | BW Ends (This Page) | Flanged Ends |
|---|---|---|
| Connection Type | Permanent welded connection | Bolted flanged connection |
| Leak Path | No potential leak path at pipeline joint | Gasket-based sealing at flange joint |
| Maintenance | Strainer body cannot be removed from pipeline | Strainer can be removed from pipeline easily |
| Max Size | Up to 48 inch (DN1200) | Up to 48 inch (DN1200) |
| Typical Application | Buried pipeline, high-integrity service, permanent installation | Pipeline with periodic strainer removal, maintenance service |
Reference: ASME B16.34, API 598. BW ends provide permanent leak-tight welded connection with no potential leak path, preferred for buried pipeline and high-integrity service; flanged ends allow easy strainer removal for maintenance.
Tee 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, large diameter pipeline, buried pipeline, low-pressure industrial service |
| ANSI Class 300 | 51 | 740 | General hydrocarbon, process piping, medium-pressure service |
| ANSI Class 600 | 102 | 1,480 | High-pressure process, refinery, power plant |
Reference: ASME B16.34. Class 150 is the standard rating for large diameter low-pressure pipeline and buried pipeline service. Class 300 and 600 are available for higher pressure requirements.
BW Tee Strainer Body Material Selection
| Body Material | Standard | Key Characteristic | Typical Application |
|---|---|---|---|
| A234-WPB | ASTM A234 | Wrought carbon steel fitting, excellent weldability | Water, steam, oil, gas, large diameter BW pipeline |
| A106 Gr.B | ASTM A106 | Seamless carbon steel pipe, high temperature | High-temperature steam, boiler, power plant piping |
Reference: ASTM A234, A106. A234-WPB is the standard wrought carbon steel fitting material for BW tee strainer body; A106 Gr.B is the seamless pipe for high-temperature service. Both materials have excellent weldability for BW end connection.
Main Parts and Material List For BW Tee Strainer
| No. | Part Name | Carbon Steel | Stainless Steel |
|---|---|---|---|
| 01 | Body / Tee | A234-WPB, A106 | 304, 304L, 316, 316L |
| 02 | Cover (Blind Flange) | A105 | A182-F304 / F304L / F316 / F316L |
| 03 | Weld Neck Flange | A105 | A182-F304 / F304L / F316 / F316L |
| 04 | Bolt | A193 B7 | A193 B8 / B8M |
| 05 | Nut | A194 2H | A194 8 / 8M |
| 06 | Gasket | Graphite + 304SS / 304LSS / 316SS / 316LSS | |
| 07 | Screen | 304SS / 304LSS / 316SS / 316LSS | |
| 08 | Drain Plug | A105 | A182-F304 / F304L / F316 / F316L |
Reference: ASME B16.34, API 598, ASTM A234, A106, A105, A182, A193, A194. BW tee strainer body is fabricated from A234-WPB / A106 carbon steel or 304 / 304L / 316 / 316L stainless steel. Materials may vary by model and pressure rating. Contact us for confirmed material certificate to EN 10204 3.1.
BW Tee Strainer Structure Drawing
Face to Face Dimensions (BW Ends)
| NPS (In) | DN (mm) | L (150LB) BW | L (300LB) BW | L (600LB) BW |
|---|---|---|---|---|
| 2 | 50 | 117 | 117 | 117 |
| 2 1/2 | 65 | 152 | 152 | 152 |
| 3 | 80 | 172 | 172 | 172 |
| 4 | 100 | 209 | 209 | 209 |
| 6 | 150 | 285 | 285 | 285 |
| 8 | 200 | 354 | 354 | 354 |
| 10 | 250 | 432 | 432 | 432 |
| 12 | 300 | 508 | 508 | 508 |
| 14 | 350 | 559 | 559 | 559 |
| 16 | 400 | 609 | 609 | 609 |
| 18 | 450 | 686 | 686 | 686 |
| 20 | 500 | 762 | 762 | 762 |
| 22 | 550 | 838 | 838 | 838 |
| 24 | 600 | 861 | 861 | 861 |
| 26 | 650 | 970 | - | - |
| 28 | 700 | 1041 | - | - |
| 30 | 750 | 1117 | - | - |
| 32 | 800 | 1194 | - | - |
| 34 | 850 | 1270 | - | - |
| 36 | 900 | 1346 | - | - |
| 38 | 950 | 1422 | - | - |
| 40 | 1000 | 1498 | - | - |
| 42 | 1020 | 1524 | - | - |
| 44 | 1100 | 1625 | - | - |
| 46 | 1150 | 1701 | - | - |
| 48 | 1200 | 1778 | - | - |
Reference: ASME B16.10. Dimensions in mm. L is the face-to-face length for BW ends. The table shows Class 150LB / 300LB / 600LB BW end dimensions; sizes above 24 inch are available in Class 150LB only. Contact us for confirmed drawing.
BW Tee Strainer Applications
• Buried pipeline: main water lines and oil and gas transmission pipelines requiring permanent welded connection with no potential leak path.
• Large diameter main pipeline: DN600 to DN1200 large diameter pipeline up to 48 inch with BW ends for high-integrity service.
• High-integrity service: chemical, refinery and power plant piping where no leakage is acceptable at the pipeline joint.
• Water transmission: municipal water networks, pumping stations and treatment plants with large diameter BW tee strainer.
• Power plant cooling water: circulating water, cooling water intake and condenser protection with 48 inch BW tee strainer.
• NDT required projects: oil and gas, offshore and high-integrity service requiring non-destructive testing (NDT) on welds.
FAQ - Butt Welded Ended Tee Strainer
Q1: What is a Butt Welded Ended Tee Strainer?
A: A Butt Welded Ended Tee Strainer (BW Tee Strainer) is a fabricated pipeline strainer with a T-shaped body and butt welded ends. It is rated to ANSI Class 150LB / PN20 and available from 2 inch to 48 inch (DN50 to DN1200). The BW end connection provides a permanent leak-tight welded connection with no potential leak path at the pipeline joint, making it ideal for buried pipeline, large diameter main pipeline and high-integrity service. It removes foreign particles and impurities from liquid and gases using a perforated screen or wire mesh basket.
Q2: What is the difference between BW ends and Flanged ends?
A: BW (Butt Weld) ends provide a permanent welded connection with no potential leak path at the pipeline joint, preferred for buried pipeline, high-integrity service and permanent installation. Flanged ends allow easy strainer removal from the pipeline for maintenance, preferred for pipeline service where strainers are periodically cleaned. BW tee strainer cannot be removed from the pipeline without cutting the weld, but provides the highest leak-tightness and is the standard choice for buried pipeline and high-integrity service. For maintenance-accessible pipeline, flanged ends are recommended.
Q3: What is the cover type and why is Weld Neck Flange with Blind Flange used?
A: The BW tee strainer uses a Weld Neck Flange with Blind Flange cover design. The weld neck flange is welded to the branch chamber of the tee body, and the blind flange is bolted to the weld neck flange with bolts and nuts. This design provides a robust, high-integrity cover that can withstand the pipeline pressure and allows easy access to the screen for cleaning or replacement. For large diameter tee strainers (above 24 inch), a davit arm design is recommended for heavy blind flange cover lifting without crane.
Q4: What body materials are available for BW tee strainer?
A: Body materials include carbon steel A234-WPB (wrought carbon steel fitting) and A106 Gr.B (seamless carbon steel pipe). A234-WPB is the standard material for BW tee strainer body because of its excellent weldability and compatibility with BW end connection; A106 Gr.B is used for high-temperature steam and boiler service. Cover and weld neck flange are in A105 forged carbon steel. Screen is 304SS or 316SS. For corrosive or low-temperature service, stainless steel and low-temperature steel are available on request. NDT (non-destructive testing) is available for high-integrity projects.
Q5: What screen and mesh sizes are available?
A: Screens are supplied in stainless steel 304SS and 316SS. Perforated hole sizes include 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm and 10mm; mesh sizes include 10, 20, 40, 60, 80, 100 and 200 mesh. For large diameter water and oil and gas service, 2mm to 5mm perforated plate or 20 to 40 mesh wire mesh is common; for pump and instrument protection, 60 to 100 mesh is specified. Combined screens (perforated plate + wire mesh) are available for high dirt load with fine filtration requirement.
Q6: How do I maintain a BW tee 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 BW tee strainer body cannot be removed from the pipeline (permanent welded connection), but the branch chamber has a bolted blind flange cover for easy access to the screen. 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 BW tee strainer (above 24 inch), a davit arm design is recommended for heavy cover lifting without crane.
Request a Quote for Butt Welded Ended Tee Strainer
Send us your size (2 to 48 inch or DN50 to DN1200), pressure rating (Class 150LB / 300LB / 600LB), body material (A234-WPB / A106), perforated hole size (1-10mm) or mesh size (10-200), drain connection type (Plug / Flanged), NDT requirement, 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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