Check valves

This standard specifies the requirements for steel globe and globe stop and check valves which are wrought cast or fabricated in straght, angle or oblique pattern with end connections flanged, butt welding, socket welding or threaded (Published Document (JS))

This standard specifies the reqirements for cast iron check valves, and applies to cast iron check valves mainly used for industrial and general purpose applications however they may be used for other applications provided the requirements of the relevant performance standards are met (Published Document (JS))

This standard specifies requirements for the design, functional characteristics and manufacture of check valves made of thermoplastics intended to allow the flow of liquid fluids through the valve in one direction only and to prevent backflow, their connection to the pipe system (Published Document (JS))