The Chem-Feed C-1500N diaphragm metering injector pump from Blue-White Industries has a maximum feed to 228.1 gpd and maximum output pressure to 125 psi. Features include ball bearing, permanently lubricated gear motor, double-ball inlet and outlet cartridge-style ceramic check valves. The valve body and fittings are made of chemical-resistant PVDF. Valves have FKM static seals and TEF/P ball seat O-rings. The diaphragm is PTFE-coated EP. 714/893-8529; www.blue-white.com.