Reliable Water Pressure Pump for Marine, RV and Caravan Water Systems

Maintaining consistent water pressure is essential for onboard plumbing systems, and this 33 Series DC diaphragm pump is engineered to deliver dependable fresh water supply across marine, caravan, motorhome and RV applications. Featuring a three-chamber diaphragm design, automatic pressure switch operation, self-priming capability and dry-run protection, it provides a steady flow of up to 3.0 GPM (11.3 LPM) while simplifying installation and maintenance for a wide range of pressurised water systems.

Key Features

• Automatic On-Demand Operation: An integrated pressure switch automatically starts and stops the pump when taps are opened or closed, providing convenient water delivery without manual control.
• High Flow Performance: Delivers up to 3.0 GPM (11.3 LPM) with a maximum shut-off pressure of 45 PSI (3.1 Bar), making it suitable for supplying multiple water outlets.
• Three-Chamber Diaphragm Design: Produces smooth and reliable water flow while maintaining efficient performance for everyday freshwater applications.
• Self-Priming Capability: Self-primes up to 1.8 metres (6 ft), allowing flexible installation above the water source while maintaining dependable operation.
• Dry-Run Protection: Can safely operate without water for short periods, helping reduce the risk of pump damage during temporary water loss.
• Quiet Rubber Mounting Base: Fully rubber-mounted construction minimises vibration and operating noise while improving installation stability.
• Adjustable Pressure Switch: Allows pressure settings to be adjusted to suit different plumbing system requirements.
• Simple Installation: Standard 1/2"-14 MNPT ports and an industry-standard mounting footprint make replacement or new installations straightforward.
• Wide Voltage Availability: Available in 12V DC, 24V DC, 115V AC and 220V AC versions to accommodate a variety of electrical systems.
• Two-Year Warranty: Backed by a two-year manufacturer warranty and manufactured to meet RoHS, SGS and ISO standards.

Suitable for supplying fresh water to boats, caravans, motorhomes and RVs, this diaphragm pump combines automatic operation with reliable water delivery for everyday pressurised water systems.