SEAFLO 24V 5.0GPM 55PSI Water Pressure Pump 42 Series Marine RV

High-flow pressure pump with internal bypass

A 24V self-priming diaphragm pump for larger marine, caravan and RV water systems. It supplies up to 5.0GPM at open flow, stops at 55PSI and uses internal bypass technology to reduce rapid pressure-switch cycling at low demand.

Technical specifications

Applications and compatibility

• For multi-outlet 24V water systems on yachts, motorboats, caravans and RVs.
• Check simultaneous outlet demand and ensure every heater, filter, accumulator and fitting is rated for 55PSI.
• Internal bypass improves low-flow behaviour but correct hose size and an airtight suction remain essential.
• For compatible clean water only; do not pump fuel or solvents.

Installation and package contents

• Mount dry and ventilated on the rubber base, with access for service and winterising.
• Fit an inlet strainer and reinforced hose; keep the suction side short and airtight.
• Provide correctly rated 24V cable, fuse and switching for the 7.5A maximum draw and run length.
• Package contains one SEAFLO 42 Series pump. Confirm the exact quick-connect adapters and strainer supplied before ordering.

Frequently asked questions

What is the purpose of the internal bypass?

It permits limited recirculation at low demand and helps reduce rapid switch cycling.

Can this pump run on 12V?

No. This version requires a 24V DC supply.

Is 5.0GPM delivered at 55PSI?

No. 5.0GPM is the open-flow figure and output decreases as pressure rises.

Can it run dry?

It tolerates short dry-run periods, but prolonged dry operation should be avoided.