NPSF thread
NPSF thread
(OP)
Some of our old drawings of cast housing show npsf threads. I looked them up to see what they are, but what would lead one to use these threads instead of nptf? Thanks.
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RE: NPSF thread
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RE: NPSF thread
You can check the wall stresses under the male gland using tri-axial paradigm similar to Von Mises-Hencky, Thick Wall Pressure Vessel (Infinite Pipeline Model) or classical analysis in fracture mechanics. Obviously the wall below the male gland and bore of the pipeline is the worst case scenario, I like to carry factors of safety near two (2).
Hope this helps.
Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada