Eaton SystemStak DGM 3 40 Series Manual

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015N-13NSystemStak™ Pressure Reducing/Relieving ValvesDGMX2General DescriptionThese two-stage spool valves maintain a reduced outletpressure against variations in inlet pressure.These valves are able to act as relief valves (at 50% ofmaximum flow) to prevent excess pressure being developedwhen an actuator is subject to a reactive load. Relief flow isdirected to the “TB” port. Therefore, for the relief function to operate,all components above this DGMX2 module must contain the “TB” port, andthe directional valve must have the “TB ” bypass feature.Pilot control may be from the “P”, “A”, or “B” port. Pilotdrain flow may be directed internally to tank port “TA”, orexternally out of the valve body.Any pressure in the line to which these valves are drained isadditive to the valve pressure setting.The valve pressure setting is adjustable by means of eitheran adjusting screw containing an internal hex, a hand-adjustknob, or a micrometer knob with keylock.Different spring ratings cover an overall pressure range from2 to 315 bar (30-4500 psi).The metering spool element in this design is alwayspositioned in the “P” line (see symbols on page14). Theconnection of the pilot control line determines at which portthe reduced pressure is obtained. For example:“PP” pilot for reduced pressure in “P” port“PA” pilot for reduced pressure in “A” port“PB” pilot for reduced pressure in “B” portThe “A” and “B” line models provide for reduced pressurewhen “P” is connected to “A” or “B”. It allows free flowthrough the service port when connected to “T” (all via afour-way directional valve).Valve functionManifold or subplate mounted reducing/relieving valve.Interface5 – ISO 4401-AC-05-4-A, CETOP 5RP35A size 5 ANSI/NFPA D05Port operated uponP – Pressure portPilot controlA – Cylinder port AB – Cylinder port BP – Pressure portPressure rangeA – 2,0 to 50 bar (30 to 725 psi)B – 8,5 to 100 bar (125 to 1450 psi)F – 8,5 to 200 bar (125 to 2900 psi)G – 8,5 to 315 bar (125 to 4500 psi)Adjustment deviceH – Knob adjusterK – Micrometer knob with keylockW – Screw with locknutExternal drainE – External drainOmit for internal drain models.Remote controlOmit if not required.Gage port & thread typeGage port (all models), external drain (E)B – G 1/8” (1/8” BSPF)S – SAE-4 O-ring boss port(0.4375-20 UNF-2B thread)Design mumber - 30 seriesSubject to change. Installationdimensions unaltered for designnumbers 30 to 39 inclusive.Model CodeDGMX2 - 5 - P * - * * - (E) - (RC) - * - 301 7 1083 4 5 6 9212345678910