1″-800LB F22 Y Pattern Strainer
Description
TECHNICAL DATA SHEET
Product Name: 1-inch 800LB F22 Alloy Steel Y Pattern Strainer
Model/Specification: 1″-800LB-F22-Y-STRAINER
Product Type: Y Type Strainer (Forged)
Connection Type: Threaded (NPT) / Socket Weld (SW) / Butt Weld (BW) User specified
1. Basic Design Parameters
| Parameter | Standard/Specification |
|---|---|
| Size | 1 inch (DN25) |
| Pressure Class | Class 800 LB (PN130 / 2000 PSI) |
| Body Material | Alloy Steel – ASTM A182 F22 (Cr-Mo Steel) |
| Manufacturing Process | Forged Steel (Close Die Forged) |
| Design Standard | API 602 / ASME B16.34 / BS 5352 |
| End Connection Standard | ASME B1.20.1 (NPT) / ASME B16.11 (SW) / ASME B16.25 (BW) |
| Face to Face Standard | Manufacturer Standard / MSS SP-118 |
| Test & Inspection Std. | API 598 |
| Screen / Basket Design | Perforated or Mesh type, removable for cleaning |
2. Technical Specifications
| Parameter | Details |
|---|---|
| Strainer Type | Y Pattern, Forged Steel Construction |
| Bonnet Type | Bolted Bonnet / Screwed Bonnet (with gasket seal) |
| Service Temperature | -29°C to 550°C (F22 alloy suitable for high temp) |
| Applicable Media | Steam, High-Temperature Steam, Gas, Oil, Water, Corrosive Fluids |
| Filtration Element | Removable Stainless Steel Screen (SS304/SS316) |
| Screen Mesh / Perforation | Standard: 20 mesh (0.84 mm) / Optional: 40, 60, 80, 100 mesh or perforated |
| Installation Position | Horizontal or Vertical (downward flow) |
| Pressure Direction | Bidirectional (flow arrow indicates direction) |
3. Material of Construction (F22 Alloy Steel)
| Part Name | Material | Standard/Grade |
|---|---|---|
| Body | Alloy Steel – F22 (2.25% Cr – 1% Mo) | ASTM A182 F22 |
| Bonnet / Cover | Alloy Steel – F22 | ASTM A182 F22 |
| Screen / Filter Element | Stainless Steel | SS304 / SS316 |
| Gasket | Stainless Steel + Flexible Graphite | SS + Graphite (for high temperature) |
| Bonnet Bolts / Studs | Alloy Steel | ASTM A193 B16 (for Cr-Mo service) |
| Bonnet Nuts | Alloy Steel | ASTM A194 Gr.4 / Gr.7 |
| Drain / Blowdown Plug | Stainless Steel / Alloy Steel | Optional (if specified) |
| Nameplate | Stainless Steel / Aluminum | With rivets |
4. Main Dimensions & Connection Details
Note: Dimensions are for 1″ Forged Y Strainer. Values are based on industry standards and may vary by manufacturer .
4.1 End-to-End Dimensions (Face-to-Face)
| Size | Pressure Class | Connection Type | L (mm) | L (in) | H (mm) | H (in) | Weight (kg) | Weight (lbs) |
|---|---|---|---|---|---|---|---|---|
| 1″ | 800LB | NPT / SW / BW | 98-111 | 3.86-4.37 | 70-100 | 2.76-3.94 | ~2.1-4.2 | ~4.6-9.3 |
*Note:
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L dimension typically ranges from 98mm to 111mm for 1″ Class 800 strainers .
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H dimension (height from centerline to bottom of bonnet) approximately 70-100mm .*
4.2 End Preparation Details (Per ASME Standards)
| Connection Type | Standard | Details |
|---|---|---|
| Threaded (NPT) | ASME B1.20.1 | Tapered pipe threads, 1″ NPT Female |
| Socket Weld (SW) | ASME B16.11 | Socket depth per standard, bore to match pipe schedule |
| Butt Weld (BW) | ASME B16.25 | Bevel: 37.5°, Root face: 1.6 mm |
4.3 Screen Details
| Parameter | Standard Value |
|---|---|
| Screen Material | SS304 / SS316 |
| Mesh Size (Standard) | 20 mesh (0.84 mm openings) |
| Perforation Size | 0.8 mm – 1.6 mm (optional) |
| Open Area Ratio | > 50% of pipe cross-section |
| Screen Removal | Removable through bonnet opening |
5. Pressure-Temperature Rating (ASME B16.34 / Class 800)
*Material Group: Alloy Steel – ASTM A182 F22 (1.25Cr-0.5Mo / 2.25Cr-1Mo)*
| Temperature (°C) | Working Pressure (bar) | Working Pressure (psi) | Notes |
|---|---|---|---|
| -29 to 38 | 130 | 1885 | Maximum Rating (Class 800 / PN130) |
| 100 | 124 | 1800 | |
| 200 | 117 | 1700 | |
| 300 | 110 | 1600 | |
| 400 | 103 | 1490 | |
| 450 | 98 | 1420 | |
| 500 | 92 | 1335 | Suitable for high temp service |
| 550 | 85 | 1235 | Max for F22 material |
*Note: F22 alloy maintains strength at elevated temperatures, suitable for high-temperature steam and hydrocarbon service.*
6. Test Pressure (API 598)
| Test Type | Medium | Pressure (bar) | Pressure (psi) | Acceptance Criteria |
|---|---|---|---|---|
| Shell Test (Hydrostatic) | Water | 195 | 2828 | 1.5 x 38°C Rating (no visible leakage) |
| Seat / Screen Test | Air / N2 | 5.5 – 7.0 | 80 – 100 | Per API 598 |
| Gasket Seal Test | Air / N2 | 5.5 | 80 | No visible leakage |
7. Flow Characteristics & Pressure Drop
| Parameter | Value |
|---|---|
| Flow Coefficient Cv (approx) | ~12 – 15 (typical for 1″ Y strainer) |
| Pressure Drop | Minimal when clean (typically < 0.2 bar at rated flow) |
| Screen Open Area | 2-3 times pipe cross-sectional area |
| Recommended Flow Velocity | Water: < 2.5 m/s, Steam: < 25 m/s |
8. Features & Applications
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Key Features:
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High-Temperature Alloy Construction (F22): Chrome-Molybdenum alloy steel (ASTM A182 F22) provides excellent strength and oxidation resistance at elevated temperatures up to 550°C, making it ideal for high-temperature steam and hydrocarbon services .
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Forged Body: Forged construction ensures superior strength, grain structure integrity, and freedom from porosity, critical for high-pressure Class 800 applications .
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Y Pattern Design: Compact Y-shaped body minimizes pressure drop while providing effective debris removal .
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Removable Stainless Steel Screen: Easy maintenance – screen can be removed for cleaning without removing the strainer from the pipeline .
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Bolted / Screwed Bonnet: Secure seal design with high-temperature gasket (graphite) for reliable operation .
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Multiple End Options: Available in NPT threaded, socket weld, or butt weld connections to suit various piping specifications .
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Equipment Protection: Protects downstream equipment such as control valves, pumps, steam traps, and flow meters from damaging debris .
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Versatile Installation: Can be installed in horizontal or vertical (downward flow) pipelines .
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Customizable Filtration: Standard 20 mesh screen with optional finer meshes (40, 60, 80, 100) or perforated screens available based on application requirements .
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Main Applications:
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High-Temperature Steam Systems: Power plants, boiler houses, steam distribution networks .
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Refineries & Petrochemical Plants: Hydrocarbon processing, high-temperature oil and gas lines.
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Thermal Oil / Heat Transfer Systems: Protecting pumps and heaters from debris .
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Process Industry: Chemical processing, high-temperature fluid filtration.
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Upstream of Critical Equipment: Installed before control valves, steam traps, flow meters, and pumps .
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Condensate Lines: Removing rust and scale from condensate return systems .
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*Disclaimer: The above data is prepared based on common industry standards (API 602, ASME B16.34) for forged alloy steel Y strainers. Specific dimensions, materials, and pressure ratings may vary by manufacturer. F22 alloy is specially suited for high-temperature service up to 550°C. The final technical agreement and certified drawings shall prevail.*
