RV plumbing systems are usually tested to a pressure of about 100 to 125 psi. Bring your water pressure to a safe 40 to 50 psi range with the U.S.
U.S. Solid Water Regulator Valve- Adjustable Pressure Regulator w/Pressure Gauge
Pressure Reducing Valves and Regulators - American Backflow - (619
Installed at or near meters to cost-effectively control water pressure flowing to appliances and outlets in residential, commercial and industrial
Watts Backflow Preventer 3/4 In Water Pressure Reducing Valve, Npt Thread Union X Npt Female, Max Work 400 psi, Adjust 25-75 psi
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Water Pressure Regulators: What They Are and How They Work
This 1/2 inch high capacity feed water pressure regulator is for use in commercial and residential hydronic heating systems to fill the boiler and piping system with water, and to maintain water pressure in the system at all times. It also provides make-up water to the system in the event of system leaks. It consists of a bronze body with union threaded inlet and NPT threaded outlet connections, a tight seating check valve, stainless steel strainer, and purge lever for manual purging.
Watts 0386423 1/2 Feed Water Pressure Regulator
Water Pressure Regulator (why you need one) - Coffeetime