NPSM Female Pipe Swivel Hydraulic Fittings
Stainless Steel (Type 316) Hydraulic Fittings
The National Pipe Straight Mechnical (NPSM) female fitting has a straight thread and an inverted 30° seat. The male fitting has a straight thread and a 30° internal chamfer. The seal takes place by compression of the seat on the chamfer. The threads hold the connection mechanically. A properly chamfered NPTF male will also seal with the NPSM female.
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