This pipe fitting has NPT (National Pipe Taper) thread on both male and female ends. NPT is the United States standard used for pipe fittings. This
Bow Copper Drainage Pipe Thread Adapter, Male & Female Thread Pipe, 1/2-in
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Brass Straight Pipe Fitting Adapter 1/2 Male NPT x 1/2 Female NPT by The ROP Shop : Industrial & Scientific
in Pipe Fittings.
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