Aqua Pro Universal 3.0 GPM 12V RV Water Pump | 21847 or 21855

Replace a tired or noisy pump with the Aqua Pro Universal 3.0 GPM Water Pump. It's a compact 12V on-demand diaphragm pump with variable-flow technology that cuts cycling without an accumulator tank, a built-in check valve so city water can't backfeed, and a rubber base that keeps vibration out of the floor. Two versions:

• 21847 — adjustable pressure switch (45–65 PSI), fittings and strainer included
• 21855 — fixed 45 PSI shut-off, thermal overload protection

⚠️ Check Fittings and Mounting

Industry-standard mounting pattern fits most Shurflo and Flojet footprints. Confirm your plumbing connection type (1/2" NPS male threads on the pump); the 21847 ships with fittings and a strainer. Need more flow for a large rig? See the 5.5 GPM pump.

Key Features

• Self-priming, run-dry safe
• On-demand operation — adjustable pressure switch
• Built-in check valve — allows city water connection
• Thermal breaker motor protection
• Rubber mounting base — dampens vibration
• Safe with propylene glycol RV antifreeze
• Industry-standard mounting pattern
• Variable flow technology — no accumulator needed
• Quiet, low power draw

Specifications

• Brand: Aqua Pro
• Type: 12V On-Demand Diaphragm Water Pump
• Flow: 3.0 GPM
• 21847: Adjustable 45–65 PSI, includes fittings and strainer
• 21855: Fixed 45 PSI shut-off
• Voltage: 12 VDC
• Warranty: Limited 2-year