Unified Thread Standard Question
Unified Thread Standard Question
(OP)
Will a female connection having a 4" 8UN thread (per ASME B1.1-1989) screw on to a 4" NPT pipe nipple?
S. Bush
www.water-eg.com
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Unified Thread Standard Question
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RE: Unified Thread Standard Question
RE: Unified Thread Standard Question
RE: Unified Thread Standard Question
You will need to find Nps-3.5 pipe (4.0 inch od.) to thread and fit into the 4-UN thread. It will not be leak tight, so a flange + gasket, or a counterbore + O-ring seal would be needed for pressure tight joint.
RE: Unified Thread Standard Question