Spring Return Diaphragm Metering Pumps JBB series mechanical diaphragm metering pumps are spring type pumps with mirco motor and reducer. Key features: ●Compact and simple design.●Multilayer compostie PTFE diaphragm, long service life.  ●Reinforced plate design after the diaphragm.●Flow adjustment by the micrometer manually.●Fluid max temperture:   70℃(158℉)Materials ●Pump head: PVC, PTFE,SS304,SS316   ●Diaphragm: PTFE         ●Check Valve: PVC, PTFE,SS304,SS316 (same as pump head selection)●Valve ball: Ceramic●Valve seat: PTFE,SS316   Voltage Supply 380V on standard, others on request; DC powered motor 12V or 24V is available.Parameter Table      Model50Hz60 HzPressureDiaphragm      Dia.      (mm)PowerFlow      (lph)Flow      (gph)SPMFlow      (gph)Flow      (lph)SPM(Bar)(Psi)JBB15/1.0143.71004.417120101456060WJBB25/1.0256.61007.93012010145JBB40/0.7381015012461807102JBB60/0.66016100197212068784JBB80/0.580211002596120573JBB100/0.41002615032120180458JBB130/0.41303415041156180458Standard ConnectionModelPVCPTFESSJBB15~JBB406.5*10mm PE hoseRC 1/2"F6*12mm welding unionJBB60~JBB13010*14mm PE hoseRC 1/2"F10*16mm welding union