Everflo 12V On-Demand Diaphragm Sprayer Pump – 2.2GPM, 70 PSI, 3/8″ FNPT Ports.. by | Jul 21, 2026Corrosion resistant Viton valves and Santoprene diaphragm. Polypropylene pump manifold with 3/8″ NPT ports. Standard mounting pattern to fit most applications.