Johnson Pump Water Pressure Regulator

The Johnson Pump Water Pressure Regulator is an essential safeguard for any vessel or RV using shore power or city water connections. After years on the water, every experienced boater knows that municipal water systems deliver unpredictable pressure—sometimes surging well beyond what onboard plumbing fixtures can safely handle. This regulator protects your galley lines, heads, and hot water systems from damage caused by excessive pressure, ensuring your freshwater system operates reliably whether you're docked in a busy marina or parked at a waterfront campground.

Built from corrosion-resistant bronze, the Johnson Pump Water Pressure Regulator reduces incoming pressure to a safe 40–50 psi range, protecting seals and fittings from premature wear. The unit features a standard 3/4-inch GHT (garden hose thread) connection, allowing straightforward hookup to any city water inlet without adapters or complications. Its compact, lightweight design (0.35 lbs) installs cleanly at the water connection point, and the bronze construction resists saltwater corrosion—a critical advantage for boats operating in coastal environments where galvanic degradation threatens unprotected brass and steel components.

This regulator is ideal for boat owners, RV enthusiasts, and anyone relying on shore water connections to extend their cruising comfort. Installation takes minutes—simply thread it onto your through-hull inlet or deck connection before attaching your freshwater hose. Whether you're taking on water in a busy shipyard where pressure runs hot or connecting at a remote anchorage, the Johnson Pump Water Pressure Regulator delivers the protection your vessel's systems deserve, giving you peace of mind and extending the service life of your onboard plumbing.