12V Diaphragm Water Pump, 3-Chamber, 3.5 GPM, 40–100 PSI

12V potable water pump power for RVs, boats, and campers—delivering steady 3.5 GPM flow to improve faucet pressure and keep water moving on demand. This 3-chamber diaphragm design uses an automatic pressure switch to start when you open the tap and stop when you close it, reducing cycling and saving power. Built for quieter operation and quick replacement with standard 1/2" MNPT ports.

Designed for stable, efficient water delivery, this 12V DC diaphragm pump helps prevent weak flow that slows down cleaning, cooking, and daily wash-ups. The built-in check valve and bypass design supports more consistent supply, while the compact footprint makes it easier to mount in tight utility bays. Ideal as a replacement potable water pump for mobile living and marine systems—set your preferred pressure, wire it in, and get reliable water where you need it. Grab yours today.