China butterfly valve material code

Author:China butterfly valve     Published time:2019-06-18 09:26     Reading times:612    

The butterfly valve is composed of several important parts such as valve body, valve plate, valve seat and valve shaft. The corresponding material selection of each component is also different. Of course, the material code is also different. Let's talk about it specifically:


China butterfly valve body and valve plate material


The valve body is a major component of the butterfly valve and has different mechanical manufacturing methods depending on the pressure level. The medium and low pressure valve body usually uses a casting process to produce a butterfly valve body. Medium and high pressure gauge bodies are produced using a forging process. The valve body material is very wide, mainly including cast iron, carbon steel, stainless steel and so on.


The valve plate is an important component of the fluid medium circulation of the control pipe on the butterfly valve. The material is mainly made of ductile iron and stainless steel.


Butterfly valve body and valve plate material code: gray cast iron (HT200, HT250, HT300), ductile iron (QT400, T450), carbon steel (WC1, WCB), alloy steel (WC6), stainless steel (304, 316, 316L)


China butterfly valve uranium material


The valve shaft is also called the valve stem, which is used for transmission. It is connected to the actuator or the handle. The lower part directly drives the valve plate to rotate to realize the butterfly valve switching or regulating function.

The valve shaft material is generally made of stainless steel and carbon steel, and its code name is: stainless steel (2cr13, 304, 316, 316L), carbon steel (35, 45, Q235).


China butterfly valve seat material


The butterfly seat can be divided into a soft seal and a hard seal according to the material, and the material used in each seal form is also different.

Soft air sealing butterfly valve sealing surface material and code: nitrile rubber (NBR), EPDM, PTFE

Hard sealing butterfly valve sealing surface material and code: copper alloy (T), stainless steel (H), hard alloy (Y)


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