Eaton SystemStak DGM 3 40 Series Manual

EATON SystemStak™ Valves Size 07 E-VLVI-SS001-E1 October 2015O-5OPressure Relief Valve ModulesDGMC(2)-7(F3-) DGMC-7- ** - * * -201General DescriptionThese two-stage adjustable pressure relief modules are usedto limit the maximum pressure in the lines from which theintegral relief elements are fed.The relief elements are formed as cartridges for ease ofconstruction and servicing.Model CodeFunctional SymbolOperating DataPerformance CharacteristicsTypical performance with petroleum oil at 36 cSt (169 SUS)and 50°C (122°F).Pressure Override at Cartridge InletAt various pressure settings and cartridge outlet at 0 bar/psi.2 5 6 743Special seals forphosphate ester fluidsOmit for standard seals; see“Hydraulic fluids” in “FurtherInformation” section ofcatalog.Stak Module ReliefSizeISO 4401-07FunctionAT – Limits pressure in A,discharges to TBT – Limits pressure in B,discharges to TPT – Limits pressure in P,discharges to TPressure adjustmentrangeB – 10 to 100 bar (145 to1454 psi)C – 10 to 160 bar (145 to2326 psi)F – 10 to 250 bar (145 to3635 psi)G – 350 bar (5000 psi)Adjustment methodW – screw and lock nutH – hand wheel with lock nutDesign number,20 seriesSubject to change.Installation dimensionsunchanged for designnumbers 20-29 inclusive.1 5 67234PX T B A Y PX T B A Y PX T B A YBasic CharacteristicsMaximum flow 300 l/min (80 USgpm)Maximum operating pressure 350 bar (5076 psi)Note that back pressure in line T, into which the valve’s pilot drain is internally connected, increases the effective pressure setting. For pressure adjustment ranges see “Model Code”.Operating temperature -25 to +80°C (-13 to +176°F)Pilot drain flow 0,5 L/min (0.13 USgpm)Weights 8,55 kg (18.84 lb)