When it comes to spot & broadcast spraying, the Everflo 12V 4. 0 GPM on-demand 12V diaphragm pump is the king of the hill. With premium components & cutting-edge engineering, Everflo provides the flow You need. This pump is loaded with features such as a Honeywell Micro switch, corrosion resistant Viton valves & Santoprene diaphragm & fiberglass-reinforced polypropylene pump manifold with ½” NPT port. Other features include a silky smooth valve design for faster primes & a unique pressure switch that slowly cycles The pump to reduce wear on the motor & switch. Save battery power with the automatic power switch that turns off pump when no flow is needed. CE approved & has standard mounting pattern to fit most sprayer tanks. Replacement 12V diaphragm pump for variety of makes & models. Can be used for other fluid transfer applications. Handles up to a max of 60 PSI & self-primes up to 8'.