scope:

This Japanese Industrial Standard specifies test methods and performance requirements for flangeless end valves made of steel, cast iron and copper alloy (hereafter referred to as "valves"), regarding the strength and sealing behaviour of end connections.

This Standard is applicable to valves with a nominal pressure of 5 K, 10 K and 16 K, a nominal diameter of 300 A or less and a service temperature of 100°C or lower, but not applicable to the valves used for combustible or toxic inner fluid.

The pipe flanges suitable for connection with valves (hereafter referred to as "flanges") shall have the pressure-temperature rating at least equivalent to the flanges specified in JIS B 2220, JIS B 2239 and JIS B 2240, and the gasket contact surface of flange shall be raised or flat face.

For reference, Annex B provides the information about factors to be considered in designing and installing valves.