Kohree 110V AC Water Pressure Pump 4 GPM 50 PSI - Self-Priming, Low-Noise Booster for RVs & Homes

The Kohree 110V AC Water Pressure Pump is a self-priming 4.0 GPM, 50 PSI booster pump built to deliver steady, low-noise water pressure for RVs, boats, cabins and home pressurization needs.

Compact and ready for plug-and-play installation, this Kohree pressure pump combines a 3-chamber diaphragm design with a smart pressure switch and thermal protection to maintain consistent flow without frequent cycling. It’s designed to self-prime from shallow sources, tolerate light dry-run conditions with safety cutout, and reduce vibration and sound for use in living spaces. The included fittings and inlet strainer simplify setup for hobbyists and professionals alike.

How does the Kohree pump maintain steady pressure for showers and faucets?

The pump uses a three-chamber diaphragm layout and a built-in pressure switch to supply a constant output around 50 PSI while delivering 4.0 gallons per minute. The pressure switch starts the motor when a tap opens and stops it when demand ends, preventing unnecessary cycling and wear.

• 4.0 GPM flow at a rated 50 PSI for steady fixtures
• Adjustable pressure range from 40 to 70 PSI to tune to your system
• Pressure-switch control for automatic on-demand operation
• Diaphragm design reduces pulsation for smoother output

Can this pump prime itself and how high can it lift water?

Kohree’s self-priming system can draw water up from shallow sources, priming up to 9.8 vertical feet. Once running, the unit can sustain a vertical lift capability up to 148 feet, making it suitable for many gravity-challenged installations and long-distance runs.

• Self-primes from up to 9.8 feet of vertical lift
• Continuous lift capability up to 148 feet when operating
• Good for elevated tanks, long pipe runs, and off-grid collection systems
• Includes 50-mesh inlet strainer to protect the pump from debris

What safety and durability features protect the motor and system?

This Kohree pump includes thermal overload protection to automatically shut the motor down during dry-run or overheating, helping prevent damage and extend motor life. Corrosion-resistant motor components, rubber mounting feet and a compact housing reduce vibration and keep noise below 50 dB in typical installations.

• Thermal overload protection for safe operation
• Heavy-duty, corrosion-resistant motor parts for longevity
• Rubber base reduces vibration and sound (≤50 dB)
• Minimal cycling design preserves seals and diaphragm life

What’s included and how easy is the pump to install?

The unit ships with all common installation parts so most users can set it up quickly with basic tools. Kohree supplies hose fittings, garden-hose adapters, a 50-mesh strainer, Teflon tape and a 110/115V wall plug so the pump is effectively plug-and-play for many installations.

• Kohree 3-chamber diaphragm pump ready for mounting
• 1/2" barbed hose fittings and garden hose adapters included
• 50-mesh inlet strainer and Teflon tape for leak-free connections
• Detailed user manual to guide wiring and plumbing steps

Who is this for? The Kohree 110V pressure pump is aimed at RV and marine owners, off-grid and cabin users, small-property irrigation setups, and anyone needing a compact, low-noise booster for sinks, showers, toilets, or garden use. It suits DIY installers and installers wanting a ready-to-connect unit that balances reliable flow, automatic on-demand operation and built-in protections.