RELIABILITY: Engineered with a 2-chamber diaphragm and ignition-protected motor, this pump can run dry without damage and is built to withstand the rigors of marine and off-grid environments.

Key Features

• ✔ Self-Priming: Up to 1.2m (4ft) suction lift.
• ✔ Run-Dry Safe: Operates without liquid without damage.
• ✔ Quiet Operation: Includes rubber mounting feet.
• ✔ On-Demand: Automatic pressure switch control.
• ✔ Ignition Protected: Safe for engine compartments.

Technical Specs

Voltage:	24V DC
Flow Rate:	1.0 GPM (3.8 LPM)
Shut-off Pressure:	40 PSI (2.8 Bar)
Max Amperage:	2.0 Amps
Inlet/Outlet:	3/8" Hose Barb
Materials:	EPDM Valves / Santoprene Diaphragm

System Type	Typical Use Case	Notes
Marine / Yacht	Freshwater Pressurization	Suits 1-2 fixtures (taps/showers)
RV / Caravan	Portable Water Systems	Compact footprint for tight spaces
Agricultural	Vehicle-Mounted Sprayers	Intermittent duty cycles
Industrial	Water Treatment / Distillation	RoHS and ISO compliant

Is this a genuine Seaflo part?

Yes, this is a genuine Seaflo product, supplied in original packaging with full manufacturer specifications. Available at 4boats.co.uk.

How many fixtures can this pump support?

This compact 1.0 GPM model is specifically designed to supply 1 to 2 fixtures (such as a sink and a small shower) simultaneously.

Can the pressure switch be adjusted?

Yes, the 21 Series features an adjustable pressure setting, though it is factory-preset to 40 PSI for optimal balance between flow and component longevity.