A 1.4408 forged steel female/female Y-strainer is a compact filtration device designed to remove solid debris from pipelines, protecting downstream equipment. The 1.4408 material (cast equivalent to AISI 316/CF8M) is a molybdenum-bearing austenitic stainless steel offering excellent corrosion resistance, particularly against chlorides and acidic media . As a Y-strainer, it features a Y-shaped body that allows debris collection in the angled screen chamber, enabling continuous flow during filtration . The female/female threaded connections (BSP or NPT) facilitate easy inline installation. A forged steel construction provides superior strength compared to cast alternatives, making it suitable for high-pressure applications . These strainers are widely used in water, steam, compressed air, and chemical processing systems, with the blow-off cap enabling convenient debris removal without pipeline disassembly .
Technical Attributes & Specifications
1. **Body Material:** 1.4408 (GX5CrNiMo19-11-2) / AISI 316 Forged Stainless Steel.
2. **Connection Type:** Female Threaded (NPT, BSPP, or BSPT) according to ISO 7-1.
3. **Pressure Rating:** Typically PN40, PN63, or Class 800 (up to 6.0 MPa).
4. **Filter Screen:** Removable AISI 316 Stainless Steel mesh.
5. **Standard Mesh:** 40 mesh (customizable from 20 to 400 mesh).
6. **Design Standard:** ASME B16.34 or EN 12516-2.
7. **Seal/Gasket:** Reinforced PTFE or Flexible Graphite for high-temp service.
8. **Service Temperature:** -196°C to +400°C (depending on seal material).
9. **Configuration:** Compact Y-pattern for optimized flow and low pressure drop.
10. **Maintenance:** Bolted or screwed cap for easy screen access and cleaning.
11. **Blow-off Port:** Often includes a drain plug in the cap for flushing.
12. **Corrosion Resistance:** Excellent against chlorides, acetic acid, and steam.
13. **Surface Finish:** Fine-machined threads and passivated body.
14. **Flow Direction:** Unidirectional (marked with an arrow on the body).
15. **Installation:** Can be installed horizontally or vertically (downward flow).
16. **Casting/Forging:** High-density forging to eliminate porosity and leakage.
17. **Testing Standards:** Shell and leak testing per API 598 or EN 12266.
18. **Application:** Chemical dosing, pharmaceutical lines, and compressed air.
19. **Durability:** High resistance to thermal shock and mechanical vibration.
20. **Compliance:** Often meets PED 2014/68/EU and NACE MR0175 standards.
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