Jabsco Par-Max HD4 Freshwater Pump, 12V, 4 GPM, 60 PSI, Q401J-118S-3A
Jabsco Par-Max HD4 Freshwater Pump, 12V, 4 GPM, 60 PSI, Q401J-118S-3A
The Jabsco Par-Max HD4 Freshwater Pump (Q401J-118S-3A) is a 12V diaphragm pump built to deliver an onboard freshwater system that works as easily as a household tap. A pressure-controlled diaphragm design keeps water flowing on demand at 4 GPM (15 LPM) with a 60 PSI shut-off, and an integrated, sealed pressure switch starts and stops the pump automatically as fixtures are opened and closed. The heavy duty motor is cast in aluminum housing for a long working life under sustained high pressure, and an integrated bypass module reduces cycling while smoothing out flow at the tap. Dampening feet under the motor cut vibration for quiet running, and the pump is self-priming and can run dry without damage to the unit, so accidental tank-out situations will not harm the system.
Installation and servicing are simplified with quick-connect ports throughout: the pump comes equipped with an in-line quick-connect 40 mesh strainer to protect the diaphragm from debris and two 1/2 inch quick-connect straight hosebarb fittings for plumbing into new or existing freshwater lines. It is suited to boats, RVs, and other vessels that need a reliable, quiet, on-demand freshwater supply.
Specifications
- Brand: Jabsco
- Manufacturer Part Number: Q401J-118S-3A
- Style: Diaphragm
- Voltage: 12V DC
- Flow Rate: 4 GPM (15 LPM)
- Shut-Off Pressure: 60 PSI
- Strainer: Inline 40 Mesh, Quick Connect
- Hosebarb Fittings: 2 x 1/2 inch, Quick Connect
- Motor Housing Material: Cast Aluminum
- Color: Black
- Product Dimensions: 15.5 inches L x 6 inches W x 5.5 inches H
- Weight: 7.8 pounds
- UPC: 671880841870
- Warranty: 1 year
Frequently Asked Questions
What is the Jabsco Q401J-118S-3A used for? The Q401J-118S-3A is a 12V Jabsco Par-Max HD4 freshwater pump that supplies pressurized freshwater to onboard taps, showers, and fixtures on boats and similar vessels, delivering 4 GPM at up to 60 PSI before its pressure switch shuts it off.
Is the Par-Max HD4 pump self-priming? Yes, the Q401J-118S-3A is self-priming and is also able to run dry without damage to the unit, so a temporarily empty tank will not harm the pump.
What voltage does this Jabsco freshwater pump run on? This pump runs on 12V DC, matching a standard marine 12-volt house battery system.
What flow rate and pressure does the Q401J-118S-3A deliver? It delivers an open flow of 4 GPM (15 LPM) and shuts off at 60 PSI once system pressure is reached, thanks to its integrated, sealed pressure switch.
What fittings are included with this pump? The Q401J-118S-3A comes with an in-line quick-connect 40 mesh strainer and two 1/2 inch quick-connect straight hosebarb fittings for plumbing into a freshwater line.
What are the dimensions of this freshwater pump? The Jabsco Par-Max HD4 pump (Q401J-118S-3A) measures 15.5 inches long by 6 inches wide by 5.5 inches high and weighs 7.8 pounds.
What is the motor housing made of? The Q401J-118S-3A uses a heavy duty motor cast in aluminum housing, chosen for a long working life under sustained high pressure.
Does this pump run quietly? Yes, the Par-Max HD4 uses dampening mounting feet to reduce vibration, giving it quieter operation than pumps without vibration damping.
How does the HD4 differ from Jabsco's standard Par-Max pumps? The HD (Heavy Duty) line, which includes the Q401J-118S-3A, uses a wider diameter motor with a cast aluminum housing for higher pressure capability and longer life, while Jabsco's standard Par-Max models use a plastic housing and are sized for 1-3 GPM, economical setups with fewer outlets.
Can the Q401J-118S-3A cycle on and off smoothly when a tap is opened partway? Yes, this pump has an integrated bypass module that reduces cycling and provides smoother flow at the fixture, in addition to its on-demand pressure switch.
What is the warranty on this Jabsco pump? The Q401J-118S-3A Jabsco Par-Max HD4 pump carries a 1-year warranty.
Will this pump work if the water tank runs empty? Yes, the Q401J-118S-3A can run dry without sustaining damage, a feature built into its self-priming design.