PENTAIR SHURFLO 4148-153-E75 Aqua King II Premium Fresh Water Pump 4.0, 12VDC Marine RV Water Pump, 4.0 GPM Demand Pump, 55 PSI Shut Off, Self Priming 6 Ft, Multi Fixture Boat Cabin Water System Pump

The PENTAIR SHURFLO Aqua King II Premium Fresh Water Pump is an on-demand 12V diaphragm water pump designed for marine, RV, and cabin fresh water systems with multiple fixtures. It provides up to 4.0 GPM flow to support sinks, showers, and other onboard water outlets. The pump features a 4-chamber diaphragm design with mechanical bypass control to help reduce pressure cycling during operation. It self-primes up to 6 feet, can run dry without damage under normal operating conditions, and is built for installation in pressurized freshwater plumbing systems. Constructed with an electro-coated motor, sealed pressure switch, and sealed wiring, the unit is designed for marine and other moisture-prone environments. Additional features include ignition protection and thermal overload protection to support safe operation in applicable installations.

• Powerful Water Flow: Delivers up to 4.0 GPM with 55 PSI shut off pressure for steady water flow when running multiple fixtures in boats, cabins, or RV plumbing systems
• Mechanical Bypass System: Built-in adjustable bypass reduces pump cycling at low flow conditions, providing smoother operation and quieter performance in marine and RV water systems
• Durable Marine Construction: Electro-coated motor sealed switch and ignition protection with stainless steel hardware built to withstand harsh marine environments
• Self-Priming Performance: 4-chamber diaphragm design self-primes up to 6 ft runs dry without damage, and handles water up to 130°F, ideal for on-demand freshwater delivery
• Versatile Applications: Designed for boat cabins and RV freshwater systems where reliable pressure is needed, also suitable for general water transfer and camping shower setups