Camco RV Water Pressure Regulators: Preset, Gauge & Adjustable Models

Campground and marina water connections can supply more pressure than an RV's fresh-water plumbing should receive. A pressure regulator helps control that incoming water before it reaches the supply hose and interior fixtures. Camco offers several styles: factory-preset models, a preset model with a gauge, and adjustable versions with gauges. The correct choice depends on the pressure rating of your RV and how you want to connect the drinking-water hose.

Where the pressure regulator connects

For a conventional external RV water hookup, Camco's illustrated water-system guidance places the regulator at the supply side of the drinking-water hose. The hose then connects to the RV city-water inlet, with an optional inline filter in the supply run.

The 40065 has a 90-degree housing intended to help route the hose at an RV city-water connection. Its position may differ from the straight inline example; follow the model's instructions and the RV manufacturer's hookup guidance.

Camco water regulators with product photos

Brass preset regulatorCamco 40055 · 40–50 PSI, fixedSimple brass regulator with standard hose-thread connections; no gauge or adjustment control.View partBrass preset regulator with gaugeCamco 40064 · 40–50 PSI, fixedProvides a visible pressure reading, but the factory-set pressure is not adjustable.View partAdjustable brass regulator with gaugeCamco 40058 · Adjustable; 45 PSI factory presetUses a pressure-adjustment screw and gauge so output can be set for the RV's permitted plumbing pressure.View partTastePURE 4-in-1 right-angle regulatorCamco 40065 · Adjustable, gauge and shutoffA 90-degree fitting with built-in shutoff, adjustment and gauge. Helps route a hose near an RV city-water connection.View partStainless-steel high-flow regulatorCamco 40054 · 50–60 PSI, fixedA higher preset pressure than the 40–50 PSI Camco models. Choose only if your RV allows that supply pressure.View partBlue plastic preset regulatorCamco 40143 · 40–50 PSI, fixedLightweight hose-thread regulator sold as one individual unit; no gauge is supplied.View part

Preset versus adjustable models

40064 versus 40058: Both have gauges. The 40064 remains factory-set to 40–50 PSI; the 40058 has an adjustable setting and comes preset to 45 PSI. The 40065 adds a right-angle body and shutoff valve. The 40143 is a single plastic regulator; distributor carton quantities do not mean six are supplied with one retail purchase.

Related fresh-water hookup parts

The drinking-water hose and inline filter are separate products, not included with the regulators above. Select them to match your available hose connections and desired hose length.

TastePURE 25-ft drinking-water hoseCamco 22783Non-heated 5/8-inch-ID RV water supply hose; connect to compatible garden-hose-thread fittings.View partTastePURE inline water filters, two-packCamco 40044Exterior water-filter pair with compatible garden-hose connectors; sold separately from each regulator.View part

To compare additional filters, see the Camco TastePURE RV water filter and hose connection guide.

Choosing and connecting a regulator

1. Read the RV water-pressure requirement. Choose the regulator's output setting or preset range based on that limit. A higher-pressure preset is not automatically suitable for every camper.
2. Match hose fittings. These Camco models are intended for compatible 3/4-inch garden-hose-thread water connections. The usual straight regulator connects its female side to the outdoor faucet and its male side to the hose.
3. Decide whether you need a gauge. The 40055, 40054 and 40143 have no gauge. The 40064 shows pressure but does not allow adjustment; the 40058 and 40065 are adjustable styles.
4. Connect and inspect. Fit the connections by hand, check hose washers, open the water supply gradually and look for leaks. For adjustable models, verify the gauge reading under the conditions described in the product instructions.
5. Keep equipment protected. These are pressure regulators, not water filters or backflow preventers. Use any separately required filtration and backflow-protection components, and drain/store equipment appropriately when freezing conditions are expected.