PRESSURE & TEMPERATURE RATINGS
Needle Valve have pressure and temperature ratings specify the maximum and minimum temperatures and pressures which the valve can be operate safe. These ratings are based on the properties of materials and used in pressure containing parts and those of other materials that contact the system fluid. On design require and on performance tests. Design basis for our process and instru m ent valves, explains how pressure temperature ratings are determine and lists national codes and standards relating to valve ratings.