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What is the applicable medium temperature for different valve body and bonnet materials?

Release time:2020/7/17

The applicable medium temperature for different valve body and bonnet materials is as follows:

The maximum medium temperature for gray cast iron body and bonnet is 250℃.

Malleable iron body, valve cover applicable medium maximum service temperature is 300℃.

Ductile iron valve body, bonnet suitable for the medium maximum temperature of 350℃.

High silicon cast iron body, bonnet suitable for the medium maximum temperature of 120℃.

The highest service temperature for carbon steel valve body and bonnet is 425℃ (forgings 16Mn and 30Mn up to 450℃).

Cr5Mo alloy steel body, valve cover suitable for the medium maximum temperature of 550℃.

1Cr18Ni9Ti and Cr18Ni12Mo2Ti stainless steel body and bonnet suitable for the medium maximum temperature of 600℃.

Copper alloy valve body, bonnet suitable for the medium maximum temperature of 200℃.

Titanium valve body, valve cover applicable medium maximum temperature is 300℃.

The highest temperature of the medium suitable for plastic valve body and bonnet: nylon 100℃, chlorinated polyether 100℃, POLYvinyl chloride 60℃, polytrifluoroethylene -60~120℃, polytetrafluoroethylene -180~150℃.

Rubber diaphragm valve depends on different types of rubber, natural rubber 60℃;Nitrile butadiene rubber, neoprene 80℃;Fluororubber 150℃.

Valve lining with rubber, plastic, rubber, plastic temperature resistance shall prevail.

Ceramic and glass valves, their temperature resistance and rapid change difference, generally used below 90℃.

Enamel valve temperature resistance is limited by seal ring materials, the highest temperature of the medium over 150℃.


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Group address:No.342, Hesheng Yutingyuan, Xiangju Road, Qingpu District, Shanghai
Hotline:+86-21-69755076   59755666
     +86-21-69755027   69755026   57339828
Investment call: +86-15021631111
Fax:+86-21-69755075   E-mail:sales@sgfm.cn
Factory address:No. 1798, Wang Wei East Road Fengjing Development Zone Jinshan District Shanghai City
Copyright © Shen Gao Valve Group Co., Ltd.
cpw887.cn
HuICP No. 11031085-3
No.31011802002466
Technical support:Fengsheng technology