Valterra RV Water Pressure Regulators: PSI, Gauges & Connections

Campground water pressure can vary, and an RV's plumbing may need a regulator at the city-water connection. Valterra offers standard fixed-pressure models, higher-flow 50–55 PSI versions, an adjustable regulator with a gauge, and a separate gauge for checking incoming pressure. A gauge reads pressure; it does not lower it. Choose a regulator that meets the RV manufacturer's inlet-pressure limit and matches the connection arrangement.

Compare Valterra water pressure regulators

Fixed pressure versus adjustable regulators

For a standard fixed-pressure connection, A01-1120VP regulates to 40–50 PSI without an adjustment control or gauge. A01-1124VP is also rated 40–50 PSI but includes a gauge. The higher-flow A01-1122VP and stainless-steel A01-1114VP are rated 50–55 PSI; a higher rating is not automatically appropriate for an older RV or a plumbing system with a lower allowable pressure.

The A01-1117VP adjustable brass regulator includes a gauge and is factory set to 45 PSI. Valterra advises against setting it above 60 PSI, and the RV's own limit may be lower. The A01-2222VP combines a 90-degree fitting arrangement with a 50–55 PSI high-flow design; check its orientation and follow Valterra's warning for older RVs.

Shop the matching pressure regulators

A01-1120VP — Standard lead-free brass regulator

A non-adjustable lead-free brass regulator for a compatible RV city-water connection. Valterra specifies a regulated 40–50 PSI range; check that this is within your RV's permitted inlet pressure.

View A01-1120VP

A01-1122VP — High-flow lead-free brass regulator

A higher-pressure, high-flow regulator rated 50–55 PSI, with the screened inlet washer and easy-grip fitting Valterra specifies. Choose this only when the RV's plumbing is approved for that supply pressure.

View A01-1122VP

A01-1114VP — 304 stainless-steel high-flow regulator

The 304 stainless-steel high-flow model regulates incoming city-water pressure to 50–55 PSI. Its material differs from the brass A01-1122VP even though both have the same listed regulated pressure range.

View A01-1114VP

A01-1117VP — Adjustable brass regulator with gauge

A brass adjustable regulator with a built-in gauge, factory-set to 45 PSI. Valterra advises not to set it above 60 PSI; always follow the lower limit required by the RV manufacturer.

View A01-1117VP

A01-1124VP — Fixed regulator with gauge

A brass 40–50 PSI regulator with a built-in gauge for observing water pressure. Unlike the adjustable A01-1117VP, this model has a fixed regulated range.

View A01-1124VP

A01-2222VP — 90° high-flow pressure regulator

A 90-degree high-flow regulator for compatible city-water hookups. Valterra does not recommend this 50–55 PSI model for older RV plumbing. Check both the original fitting orientation and your RV's maximum safe inlet pressure.

View A01-2222VP

Pressure gauge versus pressure regulator

A01-0110VP — 0–120 PSI pressure gauge

This mechanical dial measures water-line pressure. It does not lower or control the pressure supplied to the RV. Use it when you need a reading, then select a separate regulator if needed.

View A01-0110VP gauge

Typical city-water hookup

Use this simplified connection reference to identify the components. It is not a wiring or plumbing diagram for a specific RV model.

A separate pressure gauge may be used to check the supply. Connect hoses and fittings according to their instructions, protect the water system against backflow, and do not confuse a pressure regulator with a check valve.

What to check before ordering

1. Find your RV's maximum permitted inlet pressure. Follow the vehicle manufacturer's recommendation, not just the pressure number on an existing regulator.
2. Decide whether you need adjustment or a reading. A fixed regulator is different from the adjustable A01-1117VP; a stand-alone A01-0110VP gauge only measures pressure.
3. Identify the fittings. Match the hose inlet and RV city-water connection; these Valterra regulators use model-specific swivel and male-thread connections. A 90-degree body may have different clearance requirements from a straight model.
4. Consider the RV's age and plumbing. Valterra specifically advises against the A01-2222VP high-flow 50–55 PSI version for older RV systems.
5. Protect the drinking-water path. Use potable-water components and the backflow controls required by your RV and water source. After installation, check the inlet and hose joints for leaks.

Related freshwater connections

For the RV-side connection, see our Valterra gravity and city-water inlet hatch comparison. It explains how pressurized city-water connections differ from gravity-fill openings and how to match their wall cutouts and plumbing.