Compact 12V DC automatic demand diaphragm pump with 3.0 GPM flow, 55 PSI cutoff, variable flow operation, self-priming capability, and run-dry protection for RV and marine water systems.
The Camco 22491 is a compact 12V DC automatic demand diaphragm water pump designed for RV and marine water systems. It provides up to 3.0 GPM flow with a 55 PSI cutoff, making it suitable for supplying sinks, showers, and other onboard water fixtures.
This pump features variable flow operation with an internal bypass to help reduce cycling and noise. It is self-priming up to 6 vertical feet, can be used on-demand or continuously, and is designed to run dry without damage.
Provides water flow for compatible RV and marine plumbing systems
Designed for standard RV and marine 12-volt DC water pump systems
Internal bypass helps reduce cycling for quieter operation
Designed for on-demand or continuous use without run-dry damage
This pump is intended for compatible 12V DC RV and marine water systems. Before ordering, confirm voltage, flow rate, pressure requirements, plumbing connection style, available mounting space, and wiring capacity. If replacing an existing pump, compare the original pump’s GPM, PSI cutoff, amp draw, port style, dimensions, and mounting location before installation.
Before Starting: Turn off power to the water pump circuit, drain pressure from the plumbing system, and confirm the replacement pump specs match the system requirements. Basic Installation Steps: 1. Confirm Compatibility: Compare the old pump’s voltage, flow rate, PSI cutoff, amp draw, port style, and dimensions. 2. Shut Off Power: Disconnect 12V DC power before removing the old pump. 3. Relieve Water Pressure: Open a faucet to release pressure and reduce water spillage during removal. 4. Remove Old Pump: Disconnect wiring and plumbing connections, noting polarity and hose routing. 5. Install Strainer: Install the included mesh strainer/filter on the inlet side if appropriate for the system layout. 6. Mount Pump: Secure the pump using the rubber mounting feet to help reduce vibration. 7. Connect Plumbing: Attach compatible water lines and fittings, making sure connections are secure and leak-free. 8. Reconnect Power: Reconnect 12V DC wiring with correct polarity and proper circuit protection. 9. Prime and Test: Restore water supply, power the pump, open a faucet, and check for proper flow, shutoff, leaks, and noise.
Package Contents: • 1 Camco 22491 12V DC automatic demand diaphragm water pump • 1 Mesh strainer/filter • 2 Barbed hose adapters NOT Included — May Also Need: • Additional plumbing fittings or adapters • Hose clamps • Electrical connectors or wiring supplies • Inline fuse or circuit protection, if existing wiring is not suitable • Fresh water hose or replacement water lines • Mounting screws, if not supplied or if originals cannot be reused This listing is for the pump, included strainer/filter, and supplied hose adapters only. Verify plumbing and electrical compatibility before installation.
To confirm compatibility before ordering, have the following ready: • Existing pump brand and model number • Original pump voltage, GPM, PSI cutoff, and amp draw • Photos of the current pump, label, ports, and wiring • Plumbing connection type and hose size • Available mounting space • Whether the system is RV freshwater, marine freshwater, or saltwater use Why this matters: RV and marine water pumps can look similar but differ by flow rate, pressure cutoff, electrical draw, port orientation, plumbing fittings, and mounting footprint.
Match this pump by voltage, flow rate, pressure cutoff, amp draw, port style, plumbing layout, and available mounting space. Do not select by RV make/model alone.
If the new pump does not correct the issue, inspect the tank pickup, inlet line, strainer, wiring, fuse, plumbing leaks, faucet restrictions, and system pressure behavior before replacing additional components.