Water pressure regulator - With manometer

The Camco Brass RV Water Pressure Regulator with Gauge helps protect your RV's plumbing and pipes from damage caused by high pressure city water. 

Easy to connect: Easily attaches with ¾ inch garden hose threads.
Safe drinking water: Durable, lead-free brass construction for good drinking water.
Easy to read color coded gauge: Indicates whether the regulated pressure is too high or too low.
A product low in lead and certified: Complies with all federal and state low lead laws. CSA Low Lead Certified NSF / ANSI 372