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What do these numbers mean?

2015-10-05View Original

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H6FO3HC is the model number of the check valve. What does each part of it mean, dear friends?
Reply #22015-10-05
H: check valve, F0: fluorine, HC: cast iron, drinking alcohol
Reply #32015-10-06
What do the 6 and 3 in that model mean?
Reply #42015-10-06
In H6FO3HC, H denotes a check valve, 6 refers to 600 pounds of pressure, F indicates a raised-face flange connection, 03 stands for Stellite alloy (STL), H represents chromium-molybdenum alloy steel (F11); c indicates that the packing is either graphite or Monel alloy, while the gasket is a 304+graphite wound gasket

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Translated at 2026-07-21 01:34:43

Original: https://bbs.hcbbs.com/thread-1471261-1-1.html

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