Blue-White’s ChemPro® diaphragm metering injector pump is equipped with a variable-speed DC motor, offering smooth and quiet chemical dosing, with no hard pulses. A full stroke every time prevents vapor lock. It’s fitted with Blue-White’s patent-pending DiaFlex® single-layer PVDF diaphragm. Intelligent electronics permit connection to SCADA systems and other remote controllers for dosing control; the firmware is upgradable.Additional features include: exclusive Diaphragm Failure Detection (DFD) system alarm; UV-protective LCD cover; turndown ratio of 100:1; feed rates to 40 gph, with a feed rate resolution of 0.1 percent, pressures to 175 psi and NEMA 4x washdown/IP66 housing. http://www.blue-white.com sales@blue-white.com