Length F to F for Butterfly Valve
Length F to F for Butterfly Valve
(OP)
Requirement of length F to F as per API 609 for 4" butterfly valve is 52 mm +/- 1.5 mm. But our manufacturer has manufactured the valve with F to F 54 mm. That is, 0.5 mm more than the + tolerance of 53.5 mm. Can any one advise if this is OK.





RE: Length F to F for Butterfly Valve
It depends on whether the end user could accept it or not.
If no big problem when installing, then no big deal i think.
RE: Length F to F for Butterfly Valve
But...yes, it depends how your end user regards this problem.