Pressure Temperature Rating

The P-T rating is not only determined by the body material, but also the seat, packing and gasket material.Sealing material is made of macromolecule, asbestos or rubber. And the selection of sealing material is based upon the medium of the valve, working temperature, pressure and velocity of flow. As the P-T rating changes according to different valve working conditions, the following P-T rating value is calculated out by stable valve working condition.

A:Pure PTFE

B:Reinforced PTFE

Notes:The valve body material in the
above charts is A105. For other P-T
rating of different body materials,
please refer to ASME B16.34
(latest edition)

 

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