JMX series Mechanical Diaphragm Metering Pump Widely used in petroleum, chemical industry, ... head: SUS304, SUS316, PVC, PTEFDiaphragm: PTFEValve: SUS304, SUS316, PVC, PTEFValve ball: ZrO2, SUS304, SUS316, CeramicValve seat: Viton, PVC, SUS304, SUS316Tubing: PE ... rubber to cover all of the body. Project Case JMX series Mechanical Diaphragm Metering Pump