Product Show Products Description The diaphragm is made up by PTFE, which is compatible with all kinds of chemicals. The life of the diaphragm is over 5 years, which 5 times as national standard GB/T7782-2008. The JCMA Series electromagnetic metering pump offers precise chemical injection at an economical cost. Manual or on/off control for simple additional applications. Sophisticated engineering provides effective, reliable performance Technical Date More Products Show About Us