12V RV Water Pump, 5 GPM Diaphragm, 70 PSI Auto Switch

12V RV water pump delivers strong on-demand water flow for showers, sinks, and washdowns with automatic start/stop. This 5 GPM (18.9 L/min) 4-chamber self-priming diaphragm pump reaches up to 70 PSI, helping you pull water from remote tanks without pre-filling. Built with an industrial-grade housing, protective cover, and heavy-duty power cord for dependable installs in RV, caravan, marine, or yacht freshwater systems.

• Delivers up to 5 GPM flow and 70 PSI max pressure for steady taps, sprayers, and wash tasks


• Starts automatically when a faucet opens and stops instantly when closed via built-in pressure switch


• Self-primes up to 10 ft and supports short dry-run starts for easier tank draws


• Reduces noise and vibration with a 4-chamber design and copper motor for smoother water output


• Connects to standard 1/2 in hoses with adapter, clamps, PTFE tape, and inlet filter to help prevent leaks

Use this on-demand 12V diaphragm pump as a replacement or upgrade for RV plumbing, campers, food trucks, garden irrigation, rain barrels, and marine freshwater setups. Overheat and overload protection help support longer service life during frequent cycling, while the adjustable pressure setting lets you tune performance to your system. Note: this unit is not waterproof and is not intended for exposed outdoor installation. Grab yours today and get reliable pressure wherever your tank is.

• Type: 4-chamber self-priming diaphragm water pump with automatic pressure switch


• Voltage: DC 12V


• Power: 192W


• Max flow: 5 GPM (18.9 L/min)


• Max pressure: 70 PSI


• Self-priming height: up to 10 ft


• Inlet/Outlet: 1/2 in MNPT