This standard applies to multi-functional pump control valves with a nominal pressure of PN1.0MPa to PN4.0MPa and a nominal diameter of DN50mm to DN1200mm. The technical requirements of the standard are introduced as follows:
1 Pressure - Temperature Rating
The pressure-temperature rating of the multi-functional pump control valve is determined by the pressure-temperature rating of the materials of the body, internal components, and control piping system. The maximum allowable working pressure of the multi-functional pump control valve at a certain temperature is the smaller value among the maximum allowable working pressures of the body, internal components, and control piping system materials at that temperature.