Xnrtop2-20 GPM Water Tube Design Liquid Flowmeter Measure 1"PT Dia Input

Connection threads are 1" NPT. With brass male 1" NPT to 1" PEX adapters, using teflon tape, the connections leak. It's a small leak, but you won't want to leave the meter connected for operational use. Plumb it in for testing only.

Works perfect

Leaks from the body threads even with blue monster Teflon. Complete junk.