Cash Acme1 Inch EB25 Crimp Double Union Pressure Regulating Valve (PRV), 45 PSI, 23140-0045 Brass

The 1" pex fittings work perfect and make it easy to install. The pressure was dead on... better than expected. I installed a Davey booster pump and used the regulator after the booster, then an expansion tank near the cold water inlet of the hot water heater. System worked great and I now get a constant 55 psi (or whatever pressure I set this regulator) all the time now. I like the dial indicator and the locking knob as well as the ability to rotate the top to bring the indicator to view to install in awkward locations. Do NOT install where it can freeze.