Jabsco Par-Max HD5 Heavy Duty Water Pressure Pump - 12V - 5 GPM - 40 PSIThe Jabsco Par Max HD5 Heavy Duty Water Pressure Pump delivers 5 GPM at up to 40 PSI from a compact 12V unit built for boats, RVs, and other high demand water systems where consistent pressure and durability matter. Rugged Construction: Wider diameter motor with powder coated shell, cast aluminum end bells, and lower housing to handle high pressures and extend service life. Performance Specs: 12V DC operation provides 5 GPM flow at 40 PSI discharge