05 Water Pressure Systems INTRODUCTION Pressure Controlled Diaphragm Pumps Pressure controlled diaphragm pumps provide boat owners with a fresh water system that is as easy to use as their domestic water supply — with the versatility to offer full flow or a trickle. The pump is controlled by a switch which senses the pressure drop when a faucet is opened and activates the pump; it turns off when the system pressure builds to a pre-set limit as the faucet is closed. This system allows any type of faucet or shower valve to be fitted, from 3/8" (10mm) bore for minimum water use to 1/2" (13mm) bore for maximum flow. Choosing the pump for your needs is simple — just check your system size and the number of outlets you need to operate simultaneously and select the appropriate pump. Diaphragm pumps are self-priming, quiet in operation and can run dry for extended periods. It is always best to turn the pump off and then open a tap to de-pressurize the system when you are not using the boat, as this will prolong pump life. Accumulator Tanks Accumulator tanks hold a reservoir of air and water downstream from the pump. The air acts as a cushion, absorbing pump and pressure fluctuations, smoothing the flow and making the system quieter. Accumulators allow the pump to reach shut-off pressure more smoothly which reduces the on/off cycle and gives better control of hot water delivery. Our accumulator tanks all have a bladder that separates water from air. The bladder is pre-pressurized, but may need fine tuning when installed to give the most efficient performance. One of the advantages of an accumulator tank is that they can dispense up to half of their capacity of water even when the pump is switched off. So the bigger the reservoir, the more water you have available without having to switch the pump on, helping you wash your hands or clean your teeth without noise

Washdown Pumps Washdown pumps are a development of our Water Pressure System Pumps. Higher shut-off pressure switches prevent on/off cycling while salt water compatible trigger nozzles let you blast off mud and dirt and then rinse down. Water Pressure Regulators Inlet water regulators are designed to protect your boat water system plumbing and fixtures from the possible high pressure of municipal water systems. Regulation is controlled at all flow rates by a pre-set spring, and a removable strainer traps debris. Both in-line portable and permanent flush mount models are available in our line...

05 Water Pressure Systems AUTOMATIC PRESSURE CONTROLLED PUMPS FLOW Two 1/4" (6mm) straight John Guest 6.47" long x 4.05" wide x 2.66" high (16.4cm x 10.3cm x 6.8cm) Miniature multi-outlet water pressure pump serves one or two 3/8" (10mm) outlets at any one time. SHUT-OFF PRESSURE • Dual diaphragm operation. • Diaphragm design allows dry running. • Pressure switch cut-in at 22 psi (1.5 bar), cut-out at 35 psi (2.4 bar). • Thermal overload protection automatically stops motor should it overheat due to overload, with auto restart feature. 12V DC, fuse 4 amp, 3.5 amp draw @ 25 psi 12V DC, fuse 4...

This conventional pressure switch controlled pump enjoys the same pulsationfree three chamber diaphragm design as our PAR-Max 2.9 and 1.9, but incorporates a heavy-duty motor, giving higher flows and long life for such a small footprint. SHUT-OFF PRESSURE Two 1/2" (13mm) straight hose barbs, Two 1/2" (13mm) straight QEST 9" long x 4.24" wide x 4.75" high (22.9cm x 10.6cm x 12.1cm) • Self-priming up to 10' (3m). • Three-year warranty. PAR-Max 4.0 Multi-outlet water pressure pump serves four or more 1/2" (13mm) outlets at any one time. Snap-fit ports simplify both installation and removal for routine...

05 Water Pressure Systems AUTOMATIC PRESSURE CONTROLLED PUMPS PAR-Max Plus Series The high pressure capability of the new Jabsco PAR-Max Plus Series Water Pressure Pumps, available in 4.0, 5.0 and 6.0 GPM models, provides exceptional flow and consistent water pressure to easily handle the demand of multiple outlets at one time. All PAR-Max Plus models include soft rubber mounts and quick-connect fittings for ease of installation. • Sealed switch and co-molded diaphragm eliminates leak paths, extending the life of the pumps by up to 50%. • Automatic pressure switch, tested over 4 million cycles...

V-FLO 5.0 Water Pressure Pump The new variable flow, constant water pressure pump now featuring the revolutionary new DiMOND technology, designed to automatically diagnose and monitor all aspects of your pump and water pressure system performance to prevent system failure. V-FLO is powered by a new variable speed drive that delivers the exact amount of water flow needed to perform the variety of onboard delivery tasks. Single Stack Water System The Single Stack Water System is a fully assembled water pressure set which makes installation of water pressure systems simple. The system consists of...

05 Water Pressure Systems AUTOMATIC PRESSURE CONTROLLED PUMPS Double Stack Water Systems Dual Max Automatic two-stage water system with accumulator tank and Pumpgard™ strainer. Ideal for pleasure and commercial boats with high demand requirements. Two double stack water systems are available, medium flow (5.8 GPM, 22 LPM) for up to 5 outlets and high flow (9 GPM, 34 LPM) for up to 7 outlets. Both combine two pumps assembled onto a pre-pressurized accumulator tank to smooth flow and prevent pump cycling. Both sets are self-priming up to 6-10' (2-3m). • Run-dry ability. SHUT-OFF PRESSURE Three...

PAR 36800 Water Pressure Pump This well-established and service-proven pump will serve up to four outlets simultaneously and generously. 9-7/8" long x 6-1/2" wide x 8-3/8" high (25.1cm x 16.5cm x 21.3cm) • 3.3 GPM (12.5 LPM) open flow output. • Self-priming and all other benefits as PAR 36900 below. 12V DC, fuse 8 amp, low pressure version • Low pressure switch cut-in at 10 psi (0.7 bar), cut-out at 20 psi (1.4 bar). 24V DC, fuse 4 amp, low pressure version 12V DC, fuse 8 amp, high pressure version 24V DC, fuse 4 amp, high pressure version • High pressure switch cut-in at 20 psi (1.4 bar), cut-out...