High Flow Hydraulic Metering Pumps JYDR Series Hydraulic Diaphragm Metering Pump Capacity range 90-4900lph ,16-400bar Power: 5.5kw Double diaphragm with diaphragm rupture detecting system is available to prevent accident caused by mixture of hydraulic oil and the liquid after diaphragm ruptures. Parameter TableModel50Hz60 HzPressurePlunger      Dia.      (mm)     Diaphragm      Dia.      (mm)Stroke      Length      (mm)Power      kW(HP)Inlet&Outlet SizeConnection Size  Flow      (lph)Flow      (gph)SPMFlow      (gph)Flow      (lph)SPM(Bar)(Psi)JYDR90/4090249629108115400580020150605.5(7.5)DN15DN15      WNJYDR140/401403714444168173400580020150JYDR220 / 322205870264320464025150JYDR315 / 2231583100378220319030150JYDR360 / 2036095114432200290032150DN20DN20      WNJYDR480 / 15480127152576150217536170JYDR600 / 12600159190720120174040170JYDR750 / 10750198238900100145045170JYDR960 / 8.0960254304115280116050190DN25DN25      RFJYDR1200 / 6.5120031738014406594355190JYDR1450 / 5.5145038346017405579860200JYDR1550 / 5.0155041049118605072563200JYDR1650 / 4.6165043652319804666765220JYDR1920 / 4.0192050760923044058070220DN32DN32      RFJYDR2240 / 3.5224059271026883550875240JYDR2550 / 3.0255067480830603043580240JYDR2880 / 2.8288076191334562840685260JYDR3250 / 2.43250859103039002434890260DN40DN40      RFJYDR3600 / 2.23600951114143202231995280JYDR4000 / 2.0400010571268480020290100280JYDR4900 / 1.6490012951554588016232110280Features of LGP Hydraulic Diaphragm Pumps It consists of three main devices: (1)driving device, (2) adjusting device, (3) liquid delivery device. The crankshaft which reduces motor rotation speed by worm and worm gear makes the piston reciprocate in the hydraulic oil chamber. This reciprocating movements of the pitston make the PTFE diaphragm and the liquid which is isolated by the diaphragm sucked and discharged. Each pump is with internal pressure relief valve protecting pump from over pressure conditions. The flow rate can adjusted via uniqe adjusting mechanism from 0-100%. The adjustiment can be carried when pump is in operation or at stop. The steady sate accurancy is ±1% from 30%-100% of the maximum output. Automatic operation is achived by variable speed drive. LIGAO hydraulic diaphragm pumps are suitable for crossive,vaporing, flammable, explosive or toxic solutions. It can also transport suspended liquid or moderately viscous liquid.  Double diaphragm with diaphragm rupture detecting system is availble to prevent accident caused by mixture of hydraulic oil and the liquid after diaphragm ruptures.