{"product_id":"jabsco-par-max-4-hd-12v-fresh-water-pump-15-2lpm-40psi","title":"PAR-MAX 4 HD 12V Fresh Water Pump | 15.2LPM 40PSI","description":"\u003cdiv style=\"font-weight: bold;\"\u003e\n\u003ch2 style=\"color: #dd1d1d;\"\u003e💧 JABSCO PAR-MAX 4 HD 12V FRESH WATER PUMP – 15.2LPM \/ 40 PSI\u003c\/h2\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eHeavy-Duty 4-Chamber Automatic Pressure Pump for Caravans, RVs \u0026amp; Marine Systems – Supports Up to 4 Outlets\u003c\/h3\u003e\n\u003cp\u003e💦 The Jabsco PAR-MAX 4 HD 12V Fresh Water Pump is a heavy-duty automatic pressure pump designed for larger caravan, RV and marine water systems that need strong flow, smooth operation and dependable multi-outlet performance.\u003c\/p\u003e\n\u003cp\u003eDelivering up to 15.2 litres per minute with a 40 PSI pressure-switch cut-off, the PAR-MAX 4 HD provides significantly more capacity than smaller single- or dual-outlet pumps while maintaining a practical operating pressure for compatible fresh water systems.\u003c\/p\u003e\n\u003cp\u003eIts modern quad four-chamber diaphragm pump head provides smooth water delivery even at lower demand, while the built-in pulsation-dampening bypass valve helps control unwanted cycling, reduce pulsation and minimise pump noise.\u003c\/p\u003e\n\u003cp\u003eThe heavy-duty construction includes a wider-diameter motor with powder-coated shell, cast aluminium end bells and lower housing, providing a robust design for demanding fresh water installations.\u003c\/p\u003e\n\u003cp\u003eDesigned to supply up to four 12mm outlets, the PAR-MAX 4 HD is ideal for larger caravans, motorhomes and pleasure craft requiring automatic pressure for showers, galley taps, bathroom faucets and additional water outlets.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e⚡ KEY FEATURES\u003c\/h3\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e💦 High-Flow 15.2LPM Performance\u003c\/span\u003e\u003cbr\u003eProvides strong fresh water delivery for showers, taps and larger multi-fixture systems.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e📈 40 PSI Pressure Switch\u003c\/span\u003e\u003cbr\u003eAutomatic pressure-switch operation with a 40 PSI cut-off for dependable on-demand water delivery.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🚿 Supports Up to 4 Outlets\u003c\/span\u003e\u003cbr\u003eDesigned to serve up to four 12mm \/ 1\/2\" outlets including galley taps, showers and additional faucets.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔄 Heavy-Duty Quad 4-Chamber Pump Head\u003c\/span\u003e\u003cbr\u003eModern four-chamber diaphragm construction provides smooth flow, quiet operation and strong multi-fixture performance.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e⚙️ Fully Automatic Operation\u003c\/span\u003e\u003cbr\u003eThe built-in pressure switch automatically starts and stops the pump as water is required.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔄 Built-In Pulsation-Dampening Bypass\u003c\/span\u003e\u003cbr\u003eHelps reduce rapid cycling and smooth water delivery when only a small amount of water is being used.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e💧 Self-Priming to 2.4 Metres\u003c\/span\u003e\u003cbr\u003eCan draw water from a tank positioned below the pump within its stated 2.4m \/ 8ft self-priming capability.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🛡️ Short-Term Dry-Run Capability\u003c\/span\u003e\u003cbr\u003eCan run dry for short periods without damage if the fresh water tank empties or supply is temporarily interrupted.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔥 Ignition-Protected Heavy-Duty Motor\u003c\/span\u003e\u003cbr\u003eDesigned for compatible marine and mobile installations requiring ignition-protected electrical equipment.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🌡️ Thermal Protection\u003c\/span\u003e\u003cbr\u003eIncludes thermal cut-out protection to help safeguard the motor from excessive operating temperature.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔇 Vibration-Dampening Base \u0026amp; Feet\u003c\/span\u003e\u003cbr\u003eHelps reduce vibration transfer into floors, cabinetry and boat structures for quieter operation.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🧺 40-Mesh Inlet Strainer Included\u003c\/span\u003e\u003cbr\u003eHelps prevent larger debris from entering the pump and affecting the diaphragm or valves.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔧 2 × 12mm Barbed Fittings Included\u003c\/span\u003e\u003cbr\u003eSupplied with two 12mm \/ 1\/2\" barbed quick-connect hose fittings.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e↕️ Vertical or Horizontal Installation\u003c\/span\u003e\u003cbr\u003eCan be mounted vertically or horizontally to suit different installation layouts.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🚿 DESIGNED FOR LARGER MULTI-OUTLET WATER SYSTEMS\u003c\/h3\u003e\n\u003cp\u003eThe PAR-MAX 4 HD is ideal where a smaller fresh water pump starts to struggle once several fixtures are connected.\u003c\/p\u003e\n\u003cp\u003eIt is designed to serve up to four 12mm outlets, making it suitable for systems incorporating:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🚰 Kitchen \/ galley tap\u003c\/li\u003e\n\u003cli\u003e🚿 Internal shower\u003c\/li\u003e\n\u003cli\u003e🚰 Bathroom basin\u003c\/li\u003e\n\u003cli\u003e🚿 External shower or additional faucet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe extra 15.2LPM capacity provides useful flow headroom when more than one fixture is operating at the same time.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e💦 15.2LPM HIGH-FLOW PERFORMANCE\u003c\/h3\u003e\n\u003cp\u003eMaximum Flow: 15.2 Litres Per Minute\u003c\/p\u003e\n\u003cp\u003eThis makes the PAR-MAX 4 HD a significant step up from smaller 3.8LPM and 11LPM-class pumps where higher total system flow is required.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e📈 40 PSI PRESSURE SWITCH\u003c\/h3\u003e\n\u003cp\u003eThis model uses a 40 PSI pressure-switch cut-off.\u003c\/p\u003e\n\u003cp\u003eThe pump automatically starts when water demand causes system pressure to fall and switches off once pressure rises back to the 40 PSI cut-off point.\u003c\/p\u003e\n\u003cp\u003eThis provides household-style automatic fresh water delivery throughout the caravan, RV or boat.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ Before installation, confirm that all hoses, taps, mixers, filters, water heaters and other plumbing components are suitable for operation with a 40 PSI pressure pump.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔄 SMOOTH 4-CHAMBER QUAD DESIGN\u003c\/h3\u003e\n\u003cp\u003eThe PAR-MAX 4 HD uses a modern four-chamber diaphragm pump head designed to combine higher flow with smooth water delivery.\u003c\/p\u003e\n\u003cp\u003eThe quad design helps provide:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e💦 High-volume water delivery\u003c\/li\u003e\n\u003cli\u003e💧 Smooth flow\u003c\/li\u003e\n\u003cli\u003e🔇 Quiet operation\u003c\/li\u003e\n\u003cli\u003e⚙️ Stable pressure performance\u003c\/li\u003e\n\u003cli\u003e🚿 Improved multi-fixture operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis makes it particularly useful in caravans and boats where pump pulsation and vibration can otherwise be transmitted through plumbing and cabinetry.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🛠️ HEAVY-DUTY MOTOR CONSTRUCTION\u003c\/h3\u003e\n\u003cp\u003eThe HD series incorporates a stronger motor and housing arrangement designed for demanding fresh water applications.\u003c\/p\u003e\n\u003cp\u003eConstruction includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e⚙️ Wider-diameter heavy-duty motor\u003c\/li\u003e\n\u003cli\u003e🛡️ Powder-coated motor shell\u003c\/li\u003e\n\u003cli\u003e🔩 Cast aluminium end bells\u003c\/li\u003e\n\u003cli\u003e🔩 Cast aluminium lower housing\u003c\/li\u003e\n\u003cli\u003e🔥 Ignition protection\u003c\/li\u003e\n\u003cli\u003e🌡️ Thermal cut-out protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis provides a more robust platform for regular use in larger caravan, RV and marine systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e⚙️ FULLY AUTOMATIC ON-DEMAND OPERATION\u003c\/h3\u003e\n\u003cp\u003eThe built-in pressure switch means there is no need to manually operate the pump every time water is required.\u003c\/p\u003e\n\u003cp\u003eOpen a tap and the pump automatically starts as pressure drops.\u003c\/p\u003e\n\u003cp\u003eClose the tap and the pump builds pressure until the 40 PSI cut-off is reached, then automatically switches off.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔄 BUILT-IN BYPASS REDUCES CYCLING\u003c\/h3\u003e\n\u003cp\u003eThe internal pulsation-dampening bypass valve allows the pump to handle smaller water demands more smoothly.\u003c\/p\u003e\n\u003cp\u003eThis helps reduce:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🔄 Rapid on\/off cycling\u003c\/li\u003e\n\u003cli\u003e💧 Water pulsation\u003c\/li\u003e\n\u003cli\u003e🔇 Repetitive pump noise\u003c\/li\u003e\n\u003cli\u003e⚙️ Pressure fluctuations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe bypass is especially useful when a tap is partially open or a low-flow fixture is being used.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e💨 DO I NEED AN ACCUMULATOR TANK?\u003c\/h3\u003e\n\u003cp\u003eThe built-in bypass is designed to reduce pulsation and cycling, which can reduce the need for a separate accumulator tank in many installations.\u003c\/p\u003e\n\u003cp\u003eAn accumulator may still be useful in specialised plumbing arrangements, but it is not described as necessary for normal PAR-MAX 4 HD operation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e💧 SELF-PRIMING TO 2.4 METRES\u003c\/h3\u003e\n\u003cp\u003eThe pump is capable of self-priming to approximately 2.4 metres \/ 8 feet of vertical lift.\u003c\/p\u003e\n\u003cp\u003eThis provides flexibility when locating the pump above or away from the fresh water tank.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🛡️ SHORT-TERM DRY-RUN PROTECTION\u003c\/h3\u003e\n\u003cp\u003eThe PAR-MAX 4 HD can run dry for short periods without damage.\u003c\/p\u003e\n\u003cp\u003eThis provides useful protection if:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e💧 The fresh water tank runs empty\u003c\/li\u003e\n\u003cli\u003e🔧 Water supply is temporarily interrupted\u003c\/li\u003e\n\u003cli\u003e🚐 The system needs to re-prime after being refilled\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ Dry-run capability should be treated as a safeguard. Avoid unnecessary extended operation without water.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔇 DESIGNED FOR QUIET OPERATION\u003c\/h3\u003e\n\u003cp\u003eDespite its higher flow capability, the PAR-MAX 4 HD is designed to provide quiet, efficient operation.\u003c\/p\u003e\n\u003cp\u003eNoise reduction is assisted by:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🔄 Four-chamber diaphragm construction\u003c\/li\u003e\n\u003cli\u003e⚙️ Built-in bypass control\u003c\/li\u003e\n\u003cli\u003e🔇 Vibration-dampening base plate\u003c\/li\u003e\n\u003cli\u003e🔇 Soft mounting feet\u003c\/li\u003e\n\u003cli\u003e💧 Reduced low-flow cycling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor the quietest installation, avoid mounting the pump to lightweight hollow panels and minimise rigid plumbing directly beside the pump.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🧺 40-MESH INLET STRAINER INCLUDED\u003c\/h3\u003e\n\u003cp\u003eA 40-mesh plug-in inlet strainer is included with the pump.\u003c\/p\u003e\n\u003cp\u003eThe strainer helps prevent larger debris from entering the diaphragm and valve assembly and can be removed periodically for inspection and cleaning.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔧 12MM QUICK-CONNECT HOSE FITTINGS\u003c\/h3\u003e\n\u003cp\u003eTwo 12mm \/ 1\/2\" barbed plug-in hose fittings are included.\u003c\/p\u003e\n\u003cp\u003eThe quick-connect arrangement simplifies:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🔧 Installation\u003c\/li\u003e\n\u003cli\u003e🛠️ Pump servicing\u003c\/li\u003e\n\u003cli\u003e🧺 Strainer cleaning\u003c\/li\u003e\n\u003cli\u003e🚐 Future pump replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e↕️ VERTICAL OR HORIZONTAL MOUNTING\u003c\/h3\u003e\n\u003cp\u003eThe PAR-MAX 4 HD can be installed vertically or horizontally, giving installers more flexibility when working with restricted mounting space.\u003c\/p\u003e\n\u003cp\u003eThe pump should still be installed in accordance with the correct Jabsco mounting and plumbing requirements.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔥 IGNITION PROTECTION \u0026amp; THERMAL TCO\u003c\/h3\u003e\n\u003cp\u003eThe heavy-duty motor incorporates ignition protection and thermal overload protection \/ TCO.\u003c\/p\u003e\n\u003cp\u003eIgnition protection is particularly useful for compatible marine installations, while the thermal cut-out helps protect the motor if operating temperature becomes excessive.\u003c\/p\u003e\n\u003cp\u003eCorrect cable sizing, fuse protection and installation practices are still required.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e⚡ 12V DC OPERATION\u003c\/h3\u003e\n\u003cp\u003eThis model is designed specifically for a 12V DC electrical system.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ IMPORTANT: Do not connect the 12V pump directly to a 24V supply.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e📋 TECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n\u003cp\u003eBrand: Jabsco\u003c\/p\u003e\n\u003cp\u003eSeries: PAR-MAX 4 HD\u003c\/p\u003e\n\u003cp\u003eProduct Type: Heavy-Duty Automatic Fresh Water Pressure Pump\u003c\/p\u003e\n\u003cp\u003eVoltage: 12V DC\u003c\/p\u003e\n\u003cp\u003ePump Design: Quad \/ 4-Chamber Diaphragm\u003c\/p\u003e\n\u003cp\u003eMaximum Flow: 15.2LPM\u003c\/p\u003e\n\u003cp\u003ePressure Switch Cut-Off: 40 PSI\u003c\/p\u003e\n\u003cp\u003eAutomatic Pressure Switch: Yes\u003c\/p\u003e\n\u003cp\u003eAutomatic On-Demand Operation: Yes\u003c\/p\u003e\n\u003cp\u003eSuitable Outlets: Up to 4 × 12mm \/ 1\/2\"\u003c\/p\u003e\n\u003cp\u003eSelf-Priming: Yes\u003c\/p\u003e\n\u003cp\u003eMaximum Self-Priming Lift: 2.4 Metres \/ 8 Feet\u003c\/p\u003e\n\u003cp\u003eBuilt-In Bypass: Yes\u003c\/p\u003e\n\u003cp\u003ePulsation Dampening: Yes\u003c\/p\u003e\n\u003cp\u003eDry-Run Capability: Short Periods\u003c\/p\u003e\n\u003cp\u003eMounting Orientation: Vertical or Horizontal\u003c\/p\u003e\n\u003cp\u003eMotor: Heavy-Duty Wider-Diameter Design\u003c\/p\u003e\n\u003cp\u003eMotor Shell: Powder Coated\u003c\/p\u003e\n\u003cp\u003eEnd Bells: Cast Aluminium\u003c\/p\u003e\n\u003cp\u003eLower Housing: Cast Aluminium\u003c\/p\u003e\n\u003cp\u003eMotor: Ignition Protected\u003c\/p\u003e\n\u003cp\u003eThermal Protection: Yes – TCO\u003c\/p\u003e\n\u003cp\u003eMounting: Vibration-Dampening Base Plate \u0026amp; Feet\u003c\/p\u003e\n\u003cp\u003eInlet Strainer: 40-Mesh Plug-In Strainer Included\u003c\/p\u003e\n\u003cp\u003eHose Connections: Quick-Connect Plug-In\u003c\/p\u003e\n\u003cp\u003eIncluded Fittings: 2 × 12mm \/ 1\/2\" Barbed Hose Fittings\u003c\/p\u003e\n\u003cp\u003eTypical Marine Application: Pleasure Craft up to Approximately 13 Metres \/ 40 Feet\u003c\/p\u003e\n\u003cp\u003eApplications: Caravan, RV, Marine \u0026amp; Multi-Fixture Fresh Water Systems\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔧 INSTALLATION CONSIDERATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUse with a suitable 12V DC electrical system\u003c\/li\u003e\n\u003cli\u003eEnsure all plumbing components are compatible with 40 PSI operation\u003c\/li\u003e\n\u003cli\u003eInstall the supplied 40-mesh inlet strainer\u003c\/li\u003e\n\u003cli\u003eKeep the suction line airtight for reliable self-priming\u003c\/li\u003e\n\u003cli\u003eUse suitable fresh-water-rated 12mm hose and fittings\u003c\/li\u003e\n\u003cli\u003eKeep unnecessary inlet restrictions to a minimum\u003c\/li\u003e\n\u003cli\u003eConfirm hot-water service pressure compatibility\u003c\/li\u003e\n\u003cli\u003eUse correctly sized electrical cable and fuse protection\u003c\/li\u003e\n\u003cli\u003eProtect wiring from moisture, abrasion and heat\u003c\/li\u003e\n\u003cli\u003eMount securely using the vibration-dampening base and feet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2 style=\"color: #dd1d1d;\"\u003e❓ FREQUENTLY ASKED QUESTIONS\u003c\/h2\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eIs this specifically the 40 PSI version?\u003c\/h3\u003e\n\u003cp\u003eYes. This listing is for the Jabsco PAR-MAX 4 HD 12V model with a 40 PSI pressure-switch cut-off.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eIs this a good pump for a large caravan with a shower and several taps?\u003c\/h3\u003e\n\u003cp\u003eYes. The PAR-MAX 4 HD is designed to serve up to four 12mm outlets and provides substantially more flow than smaller 3.8LPM or 11LPM-class pumps.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan it run four outlets at the same time?\u003c\/h3\u003e\n\u003cp\u003eJabsco specifies the pump for up to four outlets. The available 15.2LPM is shared between whichever fixtures are open, so actual simultaneous performance depends on the individual flow requirements.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWould it run two showers at once?\u003c\/h3\u003e\n\u003cp\u003ePotentially, particularly with efficient shower heads. Add the expected flow requirement of both showers and allow for plumbing restrictions if strong simultaneous performance is important.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWill it provide better shower performance than an 11LPM pump?\u003c\/h3\u003e\n\u003cp\u003eIt provides more total flow capacity, which can be especially useful when another outlet is used at the same time. Actual shower pressure and flow still depend on the shower head, plumbing and hot-water system.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWill I get the full 15.2LPM from one shower?\u003c\/h3\u003e\n\u003cp\u003eNot necessarily. The 15.2LPM specification is maximum pump flow. Outlet flow is reduced by pressure, hose restrictions, filters, fittings and the shower head itself.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eHow does this compare with the Jabsco PAR-MAX 3 HD?\u003c\/h3\u003e\n\u003cp\u003eThe PAR-MAX 3 HD provides up to 11.3LPM and is designed for up to three outlets. The PAR-MAX 4 HD increases maximum flow to 15.2LPM and supports up to four outlets, making it better suited to larger water systems.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhy choose 40 PSI instead of a higher-pressure pump?\u003c\/h3\u003e\n\u003cp\u003eThe 40 PSI model provides high 15.2LPM flow without unnecessarily increasing system pressure. This can make it a better match for plumbing systems and appliances designed around moderate water pressure.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eIs 40 PSI suitable for caravan plumbing?\u003c\/h3\u003e\n\u003cp\u003eIt can be, but the complete system should still be checked. Hoses, fittings, filters, taps, mixers and hot-water equipment all need to be rated for the pump's pressure.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I use it with a caravan hot-water service?\u003c\/h3\u003e\n\u003cp\u003ePotentially, provided the hot-water system is compatible with a 40 PSI water supply. Check the manufacturer's maximum inlet pressure before installation.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eDoes it automatically start when I open a tap?\u003c\/h3\u003e\n\u003cp\u003eYes. The built-in pressure switch provides fully automatic on-demand operation.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eDo I need a separate pressure switch?\u003c\/h3\u003e\n\u003cp\u003eNo. The pressure switch is built into the pump.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eDo I need an accumulator tank?\u003c\/h3\u003e\n\u003cp\u003eNot normally. The internal bypass helps reduce pulsation and unwanted cycling, reducing the need for a separate accumulator tank.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat does the bypass valve do?\u003c\/h3\u003e\n\u003cp\u003eIt helps the pump handle lower water demand without rapidly switching on and off. This can provide smoother flow and quieter operation when a tap is partially open.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I mount the pump above the fresh water tank?\u003c\/h3\u003e\n\u003cp\u003eYes, within its stated self-priming capability of approximately 2.4 metres \/ 8 feet vertical lift.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I install it vertically?\u003c\/h3\u003e\n\u003cp\u003eYes. The pump is specified as suitable for vertical or horizontal installation.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan it run dry if my tank empties?\u003c\/h3\u003e\n\u003cp\u003eYes. It can run dry for short periods without damage, providing useful protection if the fresh water supply is temporarily lost.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eDoes it include an inlet filter?\u003c\/h3\u003e\n\u003cp\u003eYes. A 40-mesh plug-in inlet strainer is included.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat size hose does it suit?\u003c\/h3\u003e\n\u003cp\u003eThe pump includes two 12mm \/ 1\/2\" barbed quick-connect hose fittings.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eIs this suitable for a 40-foot boat?\u003c\/h3\u003e\n\u003cp\u003eThe PAR-MAX 4 HD is described as suitable for fresh water systems on pleasure craft up to approximately 13 metres \/ 40 feet. Actual suitability should still be based on the number of outlets and total water demand.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWill it run from a 12V lithium battery?\u003c\/h3\u003e\n\u003cp\u003eYes. The pump can be used with a suitable 12V lithium battery system when correctly wired and fused.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWill it run from an AGM battery?\u003c\/h3\u003e\n\u003cp\u003eYes. A suitable 12V AGM auxiliary battery can also operate the pump.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eHow many amps does it draw?\u003c\/h3\u003e\n\u003cp\u003eA current specification has not been provided here, so it should not be guessed when designing the circuit. Confirm the current draw for the exact model before selecting cable, fuse and switch ratings.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eIs the PAR-MAX 4 HD noisy?\u003c\/h3\u003e\n\u003cp\u003eIt is designed for quiet operation. The four-chamber diaphragm, internal bypass, vibration-dampening base and soft feet all help reduce pump noise and transmitted vibration.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWould this be a good upgrade from an 11LPM caravan pump?\u003c\/h3\u003e\n\u003cp\u003eYes if your current pump loses performance when multiple outlets are opened or if you have added more fixtures. If your existing 11LPM pump already meets your needs, the additional capacity may not be necessary.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat should I check before buying?\u003c\/h3\u003e\n\u003cp\u003eConfirm that your electrical system is 12V, make sure the 15.2LPM capacity is appropriate for your water demand, check that all plumbing and hot-water equipment can handle 40 PSI, confirm that the supplied 12mm fittings suit your system and verify the required current draw, fuse size and cable sizing before installation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 style=\"color: #dd1d1d;\"\u003e💦 HIGH-FLOW 40 PSI WATER PERFORMANCE FOR LARGER 12V SYSTEMS\u003c\/h2\u003e\n\u003cp\u003eThe Jabsco PAR-MAX 4 HD 12V combines high 15.2LPM water flow with a practical 40 PSI pressure-switch configuration and robust heavy-duty construction.\u003c\/p\u003e\n\u003cp\u003eWith support for up to four outlets, a smooth four-chamber diaphragm pump head, built-in pulsation control, 2.4 metre self-priming capability, short-term dry-run protection and included strainer and 12mm hose fittings, it is well equipped for larger caravan, RV and marine fresh water systems.\u003c\/p\u003e\n\u003cp\u003eFor customers who need more flow than an 11LPM-class pump without moving to a higher-pressure 60 PSI system, the PAR-MAX 4 HD 40 PSI is a strong and practical upgrade.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"JABSCO","offers":[{"title":"Default Title","offer_id":45112646828280,"sku":"J20-210","price":441.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/9230\/4632\/files\/j0020-214_0.jpg?v=1788490026","url":"https:\/\/www.homeof12volt.com.au\/products\/jabsco-par-max-4-hd-12v-fresh-water-pump-15-2lpm-40psi","provider":"Home of 12 Volt Northern","version":"1.0","type":"link"}