Jabsco ParMax HD5 Diaphragm Pump 1/2 Inch & 3/4 Inch 12V – P501J-115S-3A

The Jabsco Par‑Max HD5 is a heavy‑duty 12 V freshwater pressure pump engineered for larger freshwater demands in boats, RVs, and motorhomes. It delivers up to 19 L/min (5 GPM) open flow and has a max operating pressure and cut-off of 40 PSI (2.8 bar), using a 5‑chamber Santoprene diaphragm and EPDM valves for durable, smooth on‑demand water flow. The pump includes quick‑connect 1/2″ and 3/4″ hosebarb ports, is self‑priming, dry‑run capable, and features vibration‑dampening mounts for quiet operation.