Internal Relief Valve Hydraulic Diaphragm Pumps JYSR Series Hydraulic Diaphragm Metering Pump Capacity range 28-700lph ,16-220bar Power: 1.5kw 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 Table      Model50Hz60 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)JYSR28/22287.4968.93411522031901692301.5(2)DN1010*16mm      (union for welding )JYSR42/224211144135017322031901692JYSR50/185615186718026101892JYSR70/1470182284140203020110JYSR85/12852227102120174022110DN1515*24mm      (union for welding )JYSR110/9.0110293513290130525110JYSR165/6.516544521986594330130JYSR190/5.619050602285681232130JYSR250/4.525066793004565336130DN15DN15      RFJYSR300/3.630079953603652240150JYSR380/2.83801001204562840645150JYSR480/2.34801271525762333450150DN20DN15      RFJYSR580/1.85801531846961826155150JYSR700/1.67001852228401623260150Features 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.