Can Brass Fittings Be Used With The Plastic Fittings On A Seaflo RV Water Pump

Question:

Can you thread brass fittings onto the 1/2inch npt connections of this pump? Or do they need to be plastic fittings?

asked by: BenP

Helpful Expert Reply:

Yes, since the Seaflo Diaphragm Pump for Boats and RVs # SE24FR has 1/2"-14 male NPT fittings for both to the inlet and outlet you would be able to use brass fittings instead of the included hose barb fittings, as long as you get the correct size and thread pitch.

To thread plastic and metal fittings together, the male fitting has to be plastic, and the female fitting has to be metal. When fittings with a tapered thread such as NPT are tightened, the male fitting is compressed, and the female fitting is stretched.

expert reply by: Kevin C