The following table indicates rated values of temperature and pressure for main materials of valves. These valves are determined according to American standard ASME/ANSI B16.34
|TEMP||MAX. WORKING PRESSURE|
|Up to||Up to||bar||bar||bar||bar||bar||bar||bar||bar||bar||bar||bar||bar|
The CVI soft seated trunnion mounted ball valve P-T rating is not only related to the body material, but also related to the material of seat, packing and gasket. Sealing material is made of macromolecule, asbestos or rubber. And the selection of sealing material is depended upon the medium of the valve, valve working temperature, pressure and velocity of flow.
As the P-T rating is varied on different valve working conditions, the following P-T rating value is calculated out by stable valve working condition.
Note: The valve body material in the above chart is WCB. For other P-T rating of different body material, please refer to ASME B16.34