Question about valve model
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I’m not sure about the codes in certain positions of some valve models; I’d appreciate some guidance! What do T and the first F, as well as -FM in TFQ41F-16P-FM, mean? There are those letters in the same position as well; what do they each mean? There’s also the TFQ41F-16C(FM); what’s the difference between the parenthesis (FM) and -FM?
The notation for valve models in China is quite chaotic. The commonly used standard is \"JB T 308-2004 Method for Designating Valve Models\"; \"TFQ41F-16P-FM\" is likely not a standard designation. Q--Ball valve ； 4--Flange connection ； 1--DC channel ； 16--Engineering pressure is PN16 ； F--Fluoroplastic material for the sealing surface ； P--The valve body material is chromium-nickel stainless steel ； FM--My guess is that it requires a concave flange for the sealing surface
The teacher upstairs explained it very well and in great detail
TFQ41F-16P-FM is a fire and static electricity-proof ball valve, with a concave flange surface