Flange and sandwich design• Pilot operated: Qmax = 80 l / minpN max = 350 bar pmax = 400 bar• Directly controlled: Qmax = 80/25 l / minpN max = 32/315 bar pmax = 100/400 barapplicationTo limit the operating pressure in hydraulic systems by draining the oilfrom the secured oil lines P, A orB to the return / tank line T. flange andSandwich valves (vertical stacking) are suitableespecially for machine tools,Handling of all types, applications in general mechanical engineering as well as interlinking inUnit construction.HYDRAULIC CHARACTERISTICSHydraulic fluid mineral oils, other media on requestMax. Permissible ISO 4406: 1999, class 18/16/13Degree of soiling (recommended filter fineness ß 6… 10?75)see also data sheet 1.0-50 / 2Viscosity range 12 mm2/ s ... 320 mm2/ sHydraulic fluid temperature -20… + 70 ° CMaximum pressure: pmax = 400 bar pmax = 100 bar (direct control piston)Maximum volume flowpre-, direct Control piston Qmax = 80 l / mindirectly controlled tapered piston Qmax = 25 l / minGENERAL CHARACTERISTICSWording pre or directly controlledPressure relief valveNominal size NG6 according to ISO 4401-03Flange or sandwich designMounting type 4 mounting holes for cheese head screwsM5 or stud bolts M5Tightening torque MD = 5.5 Nm (quality 8.8)for fastening screwsMD = 50 Nm for screw cartridgesConnection type threaded connection platesRow flange plates andLength linking systemAny installation positionAmbient temperature -20… + 50 ° CDimensions: • Flange type m = 1.43 kg(without screw cartridge) • Sandwich type P, A, B m = 1.18 kg• Sandwich type AB m = 1.58 kgdescriptionPilot and direct operated pressure relief valves NG6. Flange and sandwich designaccording to ISO 4401-03 with 4 connections. Proportional pressure relief cartridges M22x1.5 according to ISO 7789 are installed. The steel bodies are for flange and sandwich constructionphosphated.functionWhen the set operating pressure is reached, the piston opens and connects the secured line to the return to the tankT. For flange and sandwich versionswith pressure limitation in P is standarda connecting thread G1 / 4 "(closed)intended. It enables connectiona manometer.NG6ISO 4401-03