bayite 12V Diaphragm Water Pump — 1.5 GPM, 100 PSI Adjustable Cut-Off, Self-Priming Compact Freshwater Pump

The bayite 12V diaphragm water pump is a compact, self-priming 12V freshwater pump that supplies up to 1.5 GPM with an adjustable cut-off pressure (default 100 PSI) for boats, RVs, and mobile water systems.

This compact diaphragm pump combines corrosion-resistant components, sealed switches, and soft mounting tabs to deliver steady water flow across a range of pressures while drawing low current. It is engineered for intermittent duty, offering reliable freshwater delivery for compact systems where space, noise, and moisture exposure are concerns. The pump’s sealed body and electro-coating make it suitable for damp environments and help extend service life when installed and maintained correctly.

How much water flow and pressure can I expect from this pump?

The bayite pump produces up to 1.5 gallons per minute (5.6 L/min) at lower backpressures, with an adjustable cut-off pressure set to 100 PSI by default and a maximum of 120 PSI. Performance varies with system backpressure—higher pressure reduces flow. The specification notes the pump won’t necessarily deliver 1.5 GPM at the maximum cut-off pressure.

• Flow rating: up to 1.5 GPM (5.6 L/min) under low backpressure
• Default adjustable cut-off: 100 PSI (5.5 Bar); max 120 PSI
• Performance curve depends on plumbing, valves, and system backpressure

Can this pump handle suction lift and wet environments?

The pump has a self-priming design that allows mounting above the water source with a vertical suction lift of up to 6.6 ft (2 m). The pump body is sealed against incidental moisture and dust, and electro-coating plus sealed switches resist corrosion, making it appropriate for wet or damp installations commonly found in marine and RV applications.

• Self-priming vertical suction lift: 6.6 ft (2 m)
• Sealed pump body and switches to reduce moisture ingress
• Electro-coating and corrosion-resistant materials for damp environments

What are the electrical and mechanical duty limits I should know?

This is a 12V DC diaphragm pump designed for intermittent duty; it should not run continuously for more than six hours. The patented design aims to deliver consistent flow with relatively low current draw, but long continuous operation or running dry can shorten pump life.

• Power: 12V DC operation suitable for automotive, marine, and solar battery systems
• Continuous run limit: avoid running more than 6 hours without rest
• Includes two hose clamps and 3/8-inch hose barb inlet/outlet ports

How do noise, vibration, and installation affect performance?

Soft rubber mounting tabs reduce vibration and audible noise when the pump is mounted correctly. Proper installation—secure mounting, correct hose size, and minimized backpressure—improves efficiency and quiet operation. The pump performs best when combined with low-backpressure plumbing, check valves, and appropriate fittings.

• Vibration-damping rubber mounts for quieter operation
• 3/8-inch hose barb ports for straightforward plumbing connections
• Best results with low-backpressure system design and correct installation

Who is this for? The bayite 12V diaphragm pump is aimed at boaters, RV owners, campervan builders, and mobile-workshop users who need a compact, self-priming freshwater pump that balances flow and pressure without a heavy electrical load. It’s well suited to potable water systems, on-board sinks, and small pressurized circuits where intermittent duty and moisture resistance are priorities. If you require continuous, high-duty commercial pumping or guaranteed flow at maximum pressure, consider a purpose-built high-capacity pump instead.