Non Slam Check Valve
Specifications
- Testing & inspection standard: API 598 / BS 5146
- Flange standard: BS 10 Table E and H / PN-16, PN-25, PN-40
- Size range: 15mm to 200mm (larger sizes available on request)
- Body material: Stainless steel investment casting (ASTM A351 Gr. CF8 / CF8M)
- Disc material: Stainless steel investment casting (ASTM A351 Gr. CF8 / CF8M)
- Spring & spring washer: SS304 / SS316
- Closure mechanism: Spring-loaded / dampened controlled closure
- End connection: Flanged
The King Valves Non Slam Check Valve is a spring-assisted, controlled-closure check valve engineered to eliminate water hammer in fluid systems where abrupt flow reversal would otherwise cause damaging pressure surges. By decelerating disc travel through a spring-loaded or dampened internal mechanism, the valve closes gradually and smoothly rather than slamming shut, protecting pipework, pumps, and associated equipment from the shock loads that lead to premature failure. Manufactured in stainless steel throughout, it is well suited to demanding services including hydrocarbons, cryogenic duty, water distribution, fire protection, HVAC, and pumping station applications.
Features
- Controlled, gradual disc closure via spring-loaded mechanism eliminates water hammer and the pipe stress, noise, and equipment damage associated with sudden flow reversal
- Spring and spring washer manufactured in SS304 or SS316 for corrosion resistance across aggressive process media and temperature extremes
- Body and disc in investment-cast CF8 or CF8M stainless steel, providing consistent wall thickness and superior strength compared to sand-cast alternatives
- Available across a broad size range from 15mm to 200mm, with flanged end connections to BS 10 Table E and H and pressure ratings to PN-16, PN-25, and PN-40
- Tested and inspected to API 598 and BS 5146, with full dimensional compliance to BS 10 flange standards for straightforward drop-in replacement in existing pipelines