Working temperature and nominal pressure range of common materials for valve body
There are many types of materials commonly used in valve body. In each type of material, there are many different grades, and different grades are suitable for various pressure rating. 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 ratings.
Valve types | Working temperature | Pressure rating | |
Grey cast iron, | low pressure valves | -15 ~ + 200 ℃ | ≤1.6MPa |
Malleable cast iron | medium and low pressure valves | -15 ~ + 250 ℃ | ≤2.5MPa |
Ductile iron | medium and low pressure valves | -30 ~ + 350 ℃ | PN≤4.0MPa |
WCA, WCB, WCC | medium and high pressure valves | -29 ~ + 425 ℃ | |
16Mn and 30Mn | medium and high pressure valves | -40 ~ + 450 ℃ | |
LCB | low temperature valves | -46 ~ + 345 ℃ | |
WC6, WC9 | high-temperature and high-pressure valves | -29 ~ + 595 ℃ | |
WC5, WC12 | high-temperature and high-pressure valves | -29 ~ + 650 ℃ | |
Austenitic stainless steel | -196 ~ + 600 ℃ | ||
Cast copper alloy | oxygen pipeline valve | -273 ~ + 200 ℃ |