May I ask what the specific meaning of the letters NF is for the safety return valve AN42F-16C?
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May I ask what the specific letters of the safety return valve ANF42F-16C mean? Know that A means safety valve and 4 means flange ； Connection, 2 means full-open type, F means the material of the valve seat sealing surface is fluoroplastic, 16 standard pressure is 1.6MP, C means carbon steel! What do N and F mean? This post was last edited by haiquan05 on 2009-3-9 19:00 ]
Is your model number marked incorrectly? There are only two models of domestic safety return valves that I have seen. One is: AH42F-16C, and the other one is AHN42F-P18C. The former represents a vertical safety return valve, and the latter represents a horizontal type.
ANF42F-16C should be AH42F-16C.