Electric Pump Water Tank: Setup and Daily Use FAQ

Quick answer

Mount the tank to your roof rack, fill it through the cap, and run the pump only after the outlet hose is connected and the line is primed. The ROAM 9.5 Gallon Electric Pump Tank delivers on-demand water at 50 PSI, so most daily camp tasks need nothing more than a press of the switch. If you also carry traction boards, the 8.5 Gallon Electric Pump Tank & Traction Board Mount does the same job in one rooftop footprint.

Mounting and first fill

Both ROAM pump tanks are designed to mount directly to a roof rack, so the first job is confirming your rack can carry the loaded weight and that the tank sits where the fill cap and outlet stay reachable. Load the tank empty, mark the bracket positions, then tighten hardware in stages so the tank body isn't stressed. Fill slowly through the cap and stop when water reaches the fill neck; rooftop tanks don't need to be brimmed, and leaving a little air space makes the first pump cycle easier.

• Check rack load rating before adding a full tank of water.
• Keep the outlet hose routed away from sharp rack edges.
• Fill with clean water from a known-safe source.

Priming the 50 PSI pump

A dry pump pulls air, not water, so prime the line before expecting pressure. Connect your hose or sprayer, open the outlet, and run the pump briefly until water reaches the nozzle. If flow stutters, check for a kinked hose or a loose connection before running the pump again. Once primed, the 50 PSI electric pump holds steady pressure for rinsing gear, washing up, or a quick shower without manual pumping.

Daily use and water planning

The 9.5-gallon capacity covers a typical day of camp rinsing, hand washing, and one or two quick showers, but hot weather and dusty trails raise consumption. The 8.5-gallon version trades one gallon for an integrated traction board mount, which matters if you'd otherwise strap boards somewhere less secure. In both cases, refill before you're down to the last half-gallon so you're never caught without water for cleanup or a rinse.

Cold weather and storage

Water expands when it freezes, and a rooftop tank is exposed to overnight lows. Drain the tank and run the pump dry for a few seconds before a hard freeze, and store the tank out of direct sun between trips. If you camp in freezing conditions regularly, treat the tank as a three-season system and carry a small amount of water inside the vehicle instead.

Electric Pump Tank FAQ

How do I prime the pump?

Connect the outlet hose, open the nozzle, and run the pump until water flows steadily. If it stutters, check for kinks or loose fittings before running it again. Never run the pump dry for more than a few seconds.

Can I mount it on any roof rack?

The tank is built for direct roof rack mounting, but your rack must be rated for the loaded weight of a full tank. Check your rack's dynamic and static load limits before filling. Confirm rack capacity before the first fill.

How much water do I need per day?

Plan on roughly 1-2 gallons per person per day for drinking, cooking, and basic cleanup, and more if you're showering or rinsing muddy gear. Refill before you drop below half a tank.

Product facts

• 9.5 Gallon Electric Pump Tank: 9.5-gallon capacity with a built-in 50 PSI electric pump, designed to mount directly to a roof rack. The larger capacity and steady pressure suit longer trips where you want showers and gear rinsing without refilling daily.
• 8.5 Gallon Electric Pump Tank & Traction Board Mount: 8.5-gallon capacity with a built-in 50 PSI electric pump and an integrated traction board mount. You get the same on-demand pressure while consolidating water and recovery gear into one rooftop footprint.