Jabsco Par-Max Fresh Water Pressure Pump | 12V & 24V | 8 Models

Jabsco's Par-Max pressure-controlled diaphragm pumps are the marine standard and make an excellent RV upgrade. All are self-priming, run dry without damage, and ship with an inlet strainer and snap-in port fittings. The Par-Max 3 and 4 are economical standard models; the HD5 and HD6 add a wide-diameter powder-coated motor, cast aluminum endbells and a 5-chamber design for higher flow and pressure (IPX6, seawater-rated).

Options

• 31395-4012-3A — Par-Max 3, 12 V, cut-in 1.4 bar / cut-out 2.8 bar (40 PSI), 1/2" hose ports, 1.8 m lift
• 31395-2512-3A — Par-Max 3, 12 V, 25 PSI
• Q301J-115S-3A — Par-Max 3, 12 V
• Q301J-118S-3A — Par-Max 3, 24 V
• Q401J-118S-3A — Par-Max 4, 24 V
• P501J-115S-3A — Par-Max HD5, 12 V, 40 PSI, 1/2"–3/4" hose, 8 ft lift
• P501J-118S-3A — Par-Max HD5, 24 V
• P601J-215S-3A — Par-Max HD6, 12 V, 60 PSI, 3/4" hose, 7 ft lift

⚠️ Match the Part Number: flow and pressure for the Q301J/Q401J/118S models are decoded from Jabsco's numbering (Q3 = 3 GPM, Q4 = 4 GPM, -115 = 12 V, -118 = 24 V) and should be confirmed before ordering. Replacement port fittings: Jabsco 37050-0001.

Key Features

• Pressure-controlled diaphragm pump with integrated sealed pressure switch
• Self-priming; runs dry without damage
• Inlet strainer and snap-in port fittings included
• Vibration- and noise-reducing mounting; quiet operation
• HD models: 5-chamber design, coated heavy-duty motor, IPX6, seawater-suitable
• Limited 6-month warranty (HD5/HD6 12 V: 1 year)

Specifications

• Brand: Jabsco
• Series: Par-Max 3, 4, HD5, HD6
• Voltage: 12 V or 24 V by model
• Ports: Snap-in, 1/2" or 3/4" hose