BBB A+ Accredited Business
Description
Meet the Jabsco Par-Max HD4 Heavy Duty Water Pressure Pump — a 12V, high-capacity solution engineered to provide reliable on-demand water pressure for demanding marine, RV, and off-grid applications. Delivering 4 GPM at up to 40 PSI, this pump combines rugged construction with smooth, quiet operation to keep your water system performing at its best. 
- Heavy-duty construction: Wider diameter motor with a powder-coated shell, cast aluminum endbells, and a robust lower housing to boost pressure capability and extend life.
- HD performance range: HD models scale up to 6 GPM (23 LPM) and 60 PSI (4.1 BAR) for larger systems; standard HD4 configuration delivers solid performance in an economical footprint.
- Co-molded diaphragm technology: Designed for long life and reliable operation under varying pressures.
- Integrated bypass module: Reduces cycling and provides smoother flow, enhancing overall quietness and efficiency.
- Self-priming and dry-run capable: Versatile installation options and protection against damage during dry operation.
- Quick-connect ports and vibration-dampening feet: Fast installation, easy servicing, and reduced noise and movement.
- Integrated sealed pressure switch: On-demand operation helps conserve energy and extend pump life.
- Materials and construction: Pump head upper housing is glass fiber reinforced polypropylene; diaphragm is co-molded TPV; check valves are EPDM.
- Operating limits: Max inlet pressure 30 PSI; fluid temperature range 32°F–140°F (0°C–60°C); dry self-priming capability of 7 ft (2.13 m).
- Protection and certifications: IPX6 protection; CE, ISO8846, RCM certifications; Prop65 compliant with related chemical disclosure.
With its rugged build and intelligent features, the HD4 improves water pressure reliability for boats, RVs, or remote water systems. The integrated bypass and sealed pressure switch contribute to smoother, more energy-efficient operation, while self-priming and dry-run capability offer flexible installation and protection against dry operation. Built from glass fiber reinforced polypropylene and TPV diaphragm with EPDM check valves, the pump withstands demanding environments; IPX6 protection and Prop65 compliance add peace of mind. For larger needs, higher-flow HD configurations are available.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.