Features

It's serviced in the circumstance where the heat preservation of fluid is needed, such as the equipment of polyester, ethylene, urea, etc.

Body including inlet and outlet flanges is heat preserved, so the effect is very well. The function of vapor flushing can be added, if needed.

Balanced bellows construction protects set pressure from being affected by variable back pressure, and the parts in bonnet, such as spring, from being corroded.

The standard materials for the inside parts (Valve clack, valve seat) are all austenitic stainless steel and bead welding cobalt-base hard alloy.

To meet special service, the material of trim can be 316LN,0Cr25Ni6Mo3CuN(255 alloy)and 00Cr25Ni6Mo2N (SUS329J1) ,the material of bellows can be Ti.