The Cla-Val Model 50-48 Back Pressure and Check Valve is a hydaulically-operated, diaphragm actuated, globe or angle pattern valve. It is available in various materials and full range of sizes. It consists of three major components: body, diaphragm assembly and cover. The diaphragm assembly is the only moving part. The rugged simplicity of design and packless construction assure a long life dependable, trouble-free operation. Should the diaphragm become damaged the valve will fully open.
The 50-48 Back Pressure and Check Valve is used in many types of piping systems requiring back pressure and relief operations.
Opens rapidly for maximum relief protection
Maintains constant upstream pressure to close limits, and maintains preselected pressure during periods of low demand