Key Specifications/Special Features:
- Seat screws into the body, easy for maintenance
- Shape of the disc holder has been designed to enhance the effect of the fluid thrust for an instant lift of the disc
- Blowdown control is provided with adjustable seat ring only
- The adequate materials and clearance between disc holder and guide, spindle and adjusting screw assures disc to lift successfully
- Surface of both the disc and seat is deposited with Satellite
- Excellent flatness and surface finish of the sealing face by precision machining and lapping assure safety valve to have high-degrees of seat tightness and long using lifespan
- Design and manufacture: ISO4126, API 520
- Face to face dimensions: API 526
- Flanged ends: ANSI B16.5A
- Test pressure: API 527
- Allowance tolerance of set pressure: ≤±3%
- Over-pressure: ≤10%
- Blowdown: ≤15%
- Tightness conforms to API 527
- Body materials: WCB, WC6, CF8, CF8M, CF3M, MONEL, HAST. C
- Disc and seat materials: 304, 316m 316L, MONEL, HAST.C
- Temperature: 29 to 540°C
- Pressure: 150, 300, 600, 900, 1500, 2500lbs
