Check valves are automatic shut-off valves that are commonly used for preventing backflow or drainage in a piping system. Often applied on the discharge side of pumps, check valves prevent the system from draining if the pump stops and protects against backflow, which could harm the pump and/or other equipment.
Note: This valve is intended for liquid service that is steady, clean (no abrasives or solids), and non-pulsating. Flow-rate must not exceed 15 ft/sec.
Features
- Robust Design: This is a self-acting, not-return, single plate, wafer type swing check valve which provides high quality and reliability within a simplified construction
- Minimal Head Loss: The low inertia disc is designed to open and close under low differential pressure conditions - Also, the short pattern design and straight flow path minimize pressure drop across the valve
- Economical Design: The low weight and short face-to-face dimensions provide an economical, space-saving solution - Additionally, flange gaskets are typically not required due to the built-in, body seal o-rings
- Resilient Soft Seats: Soft seats combined with a gravity assisted disc help to ensure a positive shutoff which creates a bubble tight seal that meets or exceeds API 598 leakage requirements
- Versatile Design: This valve can be installed between weld neck or slip-on type companion flanges of different standards - This valve can not be installed in a vertical pipeline with a downward flow
- Fugitive Emission Design: The one-piece body design eliminates potential leak paths to the environment so there are no body emissions
Specifications
- Sizes: 2 - 8 in. - Larger sizes available - Please call for more information
- Type: Wafer - Single Disc - Short Pattern Design
- ASME Class: 150
- Body: Carbon Steel (A216 Gr. WCB)
- Seat & Seal: Nitrile Rubber
- Seat & Seal Temp. Range (Nitrile Rubber): -20 - 250°F
- ASME Class 150 Pressure/Temperature Rating: 275 PSI @ 100°F
- Low Cracking Pressure: 1/4 PSI
- Referenced Standards & Codes: API 598 B16.5 - Valve Testing; ASME B16.34 - Valves - Flanged, Threaded, & Welding End; ASME 150 - Flange Standard Conformity
- Markets: Oil & Gas Production, General Industry, Chemical & Petrochemical
Downloads
Wafer Style - Dual Plate Check Valve Installation - Operation - Maintenance Guide (PDF Download)
