What does FJ41H-40 mean?
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What do the letters of the shut-off and vent valve FJ41H-40 mean?
Throttle cut-off vent valve FJ41H-40 (1) The model indicates that the applicable media are petroleum, condensate oil, purified natural gas, generally sulfur-containing natural gas (containing H2S+CO2≤8mol%), city gas and other media. The applicable temperature is -29℃~130℃, and the shell material is carbon steel. (2) If it is marked with K - it means corrosion resistance (there is no such mark if it is not corrosion resistance) ； (3) F—means shorting ； (4) J—indicates throttling cutoff ； (5) 4—Indicates flange connection ； (6) 1—Indicates that the structural form is straight-through ； (7) H—indicates the valve hard sealing surface type ； (8) 40—indicates that the nominal pressure of the valve is 4.0MPa