Working temperature and nominal pressure range of commonly used materials for valve body
Release Time:
2022-09-13
The working temperature and nominal pressure range of commonly used materials for valve body:
1. Gray cast iron, suitable for low pressure valves with working temperature between -15~+200℃ and nominal pressure PN≤1.6MPa.
2. Black heart malleable cast iron, suitable for medium and low pressure valves with working temperature between -15~+250℃ and nominal pressure PN≤2.5MPa.
3. Ductile iron, suitable for medium and low pressure valves with working temperature between -30~+350℃ and nominal pressure PN≤4.0MPa.
4. Carbon steel (WCA, WCB, WCC) is suitable for medium and high pressure valves with working temperatures between -29 and +425°C, among which 16Mn and 30Mn have working temperatures between -40 and +450°C and are commonly used for Replaces ASTM A105.
5. Low temperature carbon steel (LCB), suitable for low temperature valves with working temperature between -46~+345℃.
6. Alloy steel (WC6, WC9), suitable for high temperature and high pressure valves with non-corrosive medium with working temperature between -29~+595℃; WC5 and WC12 are suitable for valves with working temperature between -29~+650℃ 7. Austenitic stainless steel, suitable for valves of dilute medium with working temperature between -196~+600℃.
8. Monel alloy, mainly suitable for valves containing hydrofluoric medium.
9. Cast copper alloy, mainly suitable for valves for oxygen pipelines with working temperature between -273~+200℃.
The above lists are the major categories of commonly used materials for valve bodies. Specifically, each type of material has many different grades, and various grades are suitable for various pressure levels. Therefore, when selecting the valve body material of the valve, the valve body material suitable for the working conditions should be determined according to different uses and different pressure levels.
In addition, valve body materials include titanium alloy (titanium valve), aluminum alloy (aluminum valve); plastic (plastic valve); ceramics (ceramic valve) and so on.
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High, medium and low pressure ball valves, gate valves, globe valves, butterfly valves, steam traps, regulating valves, pressure reducing valves, hydraulic control valves, throttle valves, power station valves, emergency shut-off valves, and other products.
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