Description
Keckley Silent Check Valve, Series: Style CW, 12 in Nominal, Wafer, 200 psi, 125 lb, 150 deg F, Media: Gas/Oil/Water, 11-1/4 in Inlet to Outlet Length, Cast Iron Body, Bronze/304 Stainless Steel Trim, Epoxy Coated, 7/8 in Bolt Dia, Import
Features:
- The Keckley style CW wafer silent check valves are constructed from rugged castings that are machined to exacting specification
- A short face-to-face dimension
- A spring automatically closes the disc at zero flow, which prevent flow reversal and water hammer
- The seat and disc's mating surfaces are hand lapped
- The disc is fully guided at the top and bottom to prevent binding and cocking
- Designed for a minimum open area equal to 110 percent of the pipe size
- All size feature discs, which lift 1/3 of an inch from their seats for every 1 in of pipe size
- Field serviceable without the need for special tool
- Cast bronze seat/disc
- 304 stainless steel spring/screw/bushing
- 500 deg F spring maximum operating temperature
- 1800 Cv flow coefficient
- The style CW is used in both vertical and horizontal application
Applications:
Liquid or gas where protection from flow reversal in a pipeline is required
Standards/Approval:
- ASTM A126-B
- ASTM B 62
- C83600 Seat/Disc
- ASTM A182
- GRADE F-304 Spring/Screw/Bushing
- Design ASME B16.1
- MSS SP-6/25/55
- Testing API 598 MSS SP-25
