1-1/2″-800LB Y Pattern Strainer
Description
TECHNICAL DATA SHEET
Product: 1-1/2″ – Class 800 Y‑Pattern Strainer
Material: ASTM A105 (Forged Carbon Steel)
1. General Description
This Y‑pattern strainer is designed for 1-1/2″ (DN40) Class 800 service. The forged ASTM A105carbon steel body provides high strength and reliability for high‑pressure applications in oil & gas, petrochemical, power generation, and industrial fluid systems. The Y‑type configuration offers a low pressure drop while enabling efficient removal of pipeline debris, protecting downstream equipment such as pumps, meters, and control valves.
2. Specifications
| Parameter | Value |
|---|---|
| Size | 1-1/2″ (DN40) |
| Pressure Rating | Class 800 (ASME B16.34) |
| Design Type | Y‑pattern, bolted cover |
| End Connections | [e.g., Raised Face (RF) / Ring Type Joint (RTJ) flanges to ASME B16.5, or socket weld / NPT to ASME B16.11] |
| Screening | Perforated basket or mesh screen (see options) |
| Filtration Rating | [e.g., 0.5 mm – 3.0 mm perforation / 20 – 200 mesh] |
| Applicable Media | Water, oil, gas, steam, condensate, non‑aggressive fluids |
| Temperature Range | -29°C to +425°C (depending on gasket & screen material) |
| Flow Direction | Arrow on body indicates flow (fluid enters cap side, exits opposite) |
3. Material Specification
| Item | Component | Material | Standard |
|---|---|---|---|
| 1 | Body | Carbon Steel | ASTM A105 (forged) |
| 2 | Cover | Carbon Steel | ASTM A105 (forged) |
| 3 | Screen / Basket | Stainless Steel 304 / 316 | ASTM A240 |
| 4 | Gasket | Spiral Wound (SS/Graphite) / PTFE | — |
| 5 | Cover Bolting | Alloy Steel | ASTM A193 B7 |
| 6 | Drain Plug (optional) | Carbon Steel / Stainless Steel | — |
4. Key Features
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Forged Carbon Steel Construction: ASTM A105 provides excellent mechanical properties, toughness, and reliable performance at elevated pressures and temperatures.
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Class 800 Rating: Designed for high‑pressure systems requiring superior strength and safety margins.
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Y‑Pattern Design: Angled screen chamber minimizes pressure drop and allows continuous flow even when the screen is partially loaded.
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Easy Maintenance: Bolted cover enables quick removal of the screen for cleaning or replacement without removing the strainer from the pipeline.
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Versatile End Connections: Available in flanged, socket weld, or NPT configurations to suit various piping systems.
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Optional Blow‑Down Connection: A tapped drain port can be provided for periodic flushing without cover removal.
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Magnetic Insert Option: Available for capturing ferrous particles in critical applications.
5. Screen Options
| Type | Description | Typical Application |
|---|---|---|
| Perforated Basket | 0.5 mm – 3.0 mm hole diameter | Coarse straining, high flow, low pressure drop |
| Mesh Liner | 20 – 200 mesh (stainless steel) | Fine filtration of particulates |
| Dual Layer (Perforated + Mesh) | Combines strength with fine filtration | General purpose, demanding applications |
6. Dimensional Data (Typical for 1-1/2″ Class 800)
| Parameter | Value |
|---|---|
| Face‑to‑Face (Flanged) | [e.g., 210 mm / 8.3″ per ASME B16.10] |
| End Flange Dimensions | ASME B16.5 Class 800 RF / RTJ |
| Overall Height | [e.g., 145 mm / 5.7″] |
| Cover Bolts | [e.g., 4 × studs, size 5/8″‑11] |
| Weight (Approx.) | [e.g., 10.5 kg / 23 lbs] |
Note: Dimensions vary by manufacturer; refer to certified drawings. Class 800 flanges are typically per ASME B16.5 Class 600 or Class 900 dimensions depending on manufacturer. Verify with actual product drawings.
7. Testing & Compliance
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Design & Manufacturing: ASME B16.34 / MSS SP‑25 / MSS SP‑45
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End Flange Dimensions: ASME B16.5
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Socket Weld / Threaded Ends: ASME B16.11
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Pressure Testing: API 598 / MSS SP‑61 (shell and seat)
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Material Certification: EN 10204 Type 3.1 (chemical & mechanical)
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NACE (Optional): MR0175 / MR0103 for sour service
8. Applications
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Oil & gas production and refining
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Petrochemical plants
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Power generation (steam, boiler feedwater, cooling water)
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High‑pressure water injection systems
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Industrial process lines requiring upstream filtration
9. Ordering Information
Please specify the following when ordering:
| Parameter | Options |
|---|---|
| End Connections | Flanged RF / RTJ / Socket Weld / NPT |
| Screen Type | Perforated (hole size) / Mesh (mesh count) / Dual layer |
| Gasket Material | Spiral wound (SS/Graphite) / PTFE / Flexible graphite |
| Drain Port | Yes (with plug) / No |
| Magnetic Insert | Yes / No |
| Special Requirements | NACE MR0175 / Positive material identification (PMI) / Low‑temp impact test |
10. Notes
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Class 800 Note: Class 800 is not a standard ASME B16.5 flange class. It is commonly defined per ASME B16.34 for valves and often utilizes Class 600 or Class 900 flange dimensions. Confirm flange dimensions with the manufacturer.
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Installation: Ensure flow direction matches the arrow on the body. The screen should be accessible for periodic cleaning.
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Maintenance: Regularly inspect and clean the screen to prevent excessive pressure drop. Replace gaskets and bolts according to recommended torque values.
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Pressure Drop: For accurate sizing, refer to the manufacturer’s flow coefficient (Cv) and screen open‑area data.
