Remote Pilot Operated Directional Valve Solenoid . - Hine Group
Remote Pilot Operated Directional ValveDG3V-8 10 DesignSolenoid Controlled Pilot Operated Directional ValveDG5V-8 10 DesignGeneral descriptionThe Size 8 DirectionalControl Valve serves as acontrol valve package. Itoffers directional control,pilot pressure reducers, pilotchokes, and main stagestroke adjustment to controlthe flow.Features and BenefitsEach valve contains amainstage spool which ispositioned in the valve byspecial arrangement. Thefour arrangements are: The valves are generallyused to control large flowsup to 700 l/min (185 USgpm)at 350 bar (5000 psi) andprovide low pressure drops.The range includes: DG3V-8 - remote pilotoperated valve. DG5V-8-H - DG4V-3-60high performance D03pilot valve 210 bar (3000psi) tank line rating. JSpring offset - For singlestage operation, onespring returns spool toan offset position. Fortwo–stage operation,springs and washersare removed from mainstage and offset action isobtained from pilot valve.Spring centered - Springand washer are locatedon both ends of mainstage spool to controlcentering.Pressure centered Centering springs areused in addition to pilotpressure, to providepositive centering shouldpilot pressure fail.No–spring detented Springs and washers areprovided so that in theevent of pilot pressurefailure, the main spoolwill spring center. A ‘‘mini-system’’capability with widevariety of spool andspring arrangements,stroke and pilot chokeadjustments, integralcheck valves and portorifices.High force solenoids andcentering springs assureconsistent shiftingthrough a wide rangeof pressure and siltingextremes. Optional MainstageSpool PositionMonitoring Switch(CE marked) Suitable for demandingindustrial or mobileapplications by providingfor reliable operations. Endurance tested to 10million cycles and fatiguetested without failure toensure highest reliability.SECTION THROUGH SPOOL BORE CENTERLINEJ-2EATON DG3V-8 & DG5V-8 10 Design E-VLVI-SS001-E1 October 2015 Fatigue testingperformed to NFPAspecifications to ensurethe highest reliability inapplications requiringhigh flows and pressure. Solid cast body andcored passages formaximum strength andminimal pressure drop. Electrical optionsincluding coil types,connections, and wiringhousings allow fullcompatibility and reliableperformance in anysystem application. Plain, waterproof, andlockable manual overrideoptions are availableto facilitate systemtroubleshooting orservicing.
Model CodesDG3V-8 Remote Pilot Operated Directional Valves(F*) - DG3V - 8 - (B) - ** - (L) - (*) - (*) - 1011 Special SealsBlank – NoneF3 – Seals for fire resistantfluids.F6 – Seals for water glycol.Directional ControlValveDG3V – Subplate mounting;pilot operatedremote operator.Pressure rating 350bar (5000 psi) for allports. (See minimumpilot pres surerequirements onpage 6.23 Valve Size8 – Valve size CE TOP 8,NFPA D084 Gauge PortsBlank – .4375-20 UNF-2BThreadB – 1/4 B SP Thread2345 Spool TypesPlease refer functionalsymbols on page 7 for spooltypes.Spool SpringArrangementBlank – No springA – Spring offset to cylinder‘A’C – Spring centeredD – Pressure centered67 Left Hand BuildL – A Models only, omit if notrequired.56789(available on C & B lank(no spring) models )7 – Stroke adjusters oncylinder A end only(available on A, C & B lank(no spring) models )8 – Stroke adjusters oncylinder ‘B’ end only(available on A, C, & Blank (no spring) models )27 – If both are required(available on A, C, & Blank (no spring) models )28 – If both are required(available on AL left hand10 Design NumberSubject to change. Installation dimensions remain asshown for design numbers10 through 19.Check Valve in PressurePortBlank – NoneK – 0,35 bar (5 psi) checkQ – 2,42 bar (35 psi) checkR – 3,45 bar (50 psi) checkS – 5,20 bar (75 psi) check9Spool ControlModificationsBlank – None1 – Stroke adjustment (bothends ) (available on C & Blank (no spring) models )2 – Pilot choke adjustment(available on all models )3 – Pilot choke and strokeadjusters (both ends )8JEATON DG3V-8 & DG5V-8 10 Design E-VLVI-SS001-E1 October 2015J-3
Model CodesDG5V-8 Solenoid Controlled Pilot Operated DirectionalValves(F*)-DG5V-8 - * - (B) - * ** - (**) - (*) - P** - (E) - (T) - (*) - (V)M - * ** * * - (L) - (*) - ** - 1013456781 Special Seals7 Spool Control(Omit if not required.)F3 – Seals for fire resistantfluids.F6 – Seals for water glycol.2 Pilot Valve TypeH – CETOP 3, HighperformanceBlank – None1 – Stroke adjustment at bothends 2 – Pilot choke adjustmentboth ends3 – “1” and “2” combined 7 – Stroke adjustment, port Aend only 8 – Stroke adjustment, port Bend only 27 – “2” and “7” combined 28 – “2” and “8” combinedOmit if not required3 Gauge PortsBlank – 4375-20 UNF-2BThreadB – 1/4 BSP Thread4 Spool TypesPlease refer functionalsymbols on page 7 for spooltypes.Spool springarrangementA – Spring offset, end-to-end(P to B when operated)AL – As “A” but left-handbuild(P to A when operated)B – Spring offset, endtocenter(P to B when operated) BL – As “B” but left-handbuild(P to A when operated) C – Spring centeredN – Two-position detented5J2 DG5V option. Same functionfrom DG3V-8-*C valves byalternating pilot supply to one port(X or Y) and permanently drainingthe other.6 Manual Override OptionBlank – Plain override insolenoid end(s) only H – Water-resistant manualoverride on solenoidend(s) W – Twist & lock override insolenoid endsZ – No override at either end No override in non-solenoid endof single-solenoid valves.J-49 Not applicable to DG5V-7-*B(L) models. Not applicable to models shown in the“Spring offset, end-to-center, oppositehand” section on page 6 Not applicable to models shown in the“Spring offset, end-to-center” section onpage 6 Not applicable for spool “8” modelsMain Stage SpoolMonitoring SwitchBlank – NonePCA – Center sensing switchon “A” port end (notavailable on “D”,pressure centered, and1/3/7/27, stroke adjustmodels)PCB – Center sensing switchon “B” port end (notavailable on 1/3/8/28,stroke adjust models)PDA – Double offset sensingswitch on “A” port end(not available on “D”,pressure centered, and1/3/7/27, stroke adjustmodels)PDB – Double offset sensingswitch on “B” portend (not available on1/3/8/28, stroke adjustmodels)PCD – Center sensing switchon “A” port end anddouble offset sensing8EATON DG3V-8 & DG5V-8 10 Design E-VLVI-SS001-E1 October 2015101112 131415switch on “B” port end(not available on “D”,pressure centered, and1/3/7/8/27/28, strokeadjust models)PPA – Offset sensingproximity switch “A”port end (not availableon “D”, pressurecentered, and 1/3/7/27,stroke adjust models)PPB – Offset sensingproximity switch “B”port end (not availableon 1/3/8/28, strokeadjust models)PPD – Offset sensingproximity switch bothends (not availableon “D”, pressurecentered, and1/3/7/8/27/28, strokeadjust models)Note: The spool position monitoring switchshown on this technical document is CEmarked and certified and complies toEuropean Standard EN 61000-6-4: 2001(Emissions) for Class A and EuropeanStandard EN 61000-6-2: 2001 (Immunity).9 External Pilot PressureE – External pilot pressure.Omit for internal pilotpressure models.10 Internal Pilot DrainT – Internal pilot drain to ‘T’port.Omit for external pilotdrain models.11 Check Valve in PressurePort(Omit if not required.)K – 0,35 bar (5 psi) checkQ – 2,42 bar (35 psi) checkR – 3,45 bar (50 psi) checkS – 5,20 bar (75 psi) check161718Solenoid EnergizationIdentityBlank – Standardarrangement forANSI B93.9 (i.e.energize solenoid Ato follow flow P to A).12V – Solenoid identificationdetermined by position ofsolenoid (i.e. solenoid A atport A end/solenoid B atport B end).Note4 and 8 type spools are always V. Solenoidenergization identity is independent ofmainstage porting.13 Flag SymbolM – Electrical options andfeatures14 Coil TypeU – ISO4400, DIN43650connectorU1 – ISO4400 fitted withPG11 plugU6 – ISO4400 with fitted DINplug with lightsKU – Top exit flying lead(150mm)KUP4 – Junior timer (Amp)connectorKUP5 – Integral DeutschconnectorFW – Flying lead with 1/2”NPT thread wiringhousingFTW – Fly. lead wiredterminal block & 1/2”NPT thread wiringhousingFPA3W – Fly. lead, 3 Pinconnector & 1/2”NPT thread wiringhousingFPA5W – Fly. lead, 5 pinconnector & 1/2”NPT thread wiringhousing
Model Codes (Contd.)(F*)-DG5V-8 - * - (B) - * ** - (**) - (*) - P** - (E) - (T) - (*) - (V)M - * ** * * - (L) - (*) - ** - 10115 Indicator Lights2318456789101112 131415161718Design NumberBlank – NoneL – Solenoid indicator light Flying lead coil type only16 Surge Suppressordamper(DC voltages only, omit if notrequired)D1 – Diode positive biasD2 – Negative biasD7 – Transorb type17 Coil VoltageSee electrical information onpage 9 for voltages available.Others available uponrequest.B – 110V AC 50Hz/120V AC60 HzBL – 110V 50 Hz/120V 60 HzD – 220V AC 50 Hz/240V AC60 HzDS – 28V DC 30 wattG – 12V DCGL – 12V DCH – 24V DCHL – 24V DCHM – 24V DC 8 wattJEATON DG3V-8 & DG5V-8 10 Design E-VLVI-SS001-E1 October 2015J-5
Application NotesGeneral DescriptionDG5V-8 models are twostage directional controlvalves having an integrallymounted wet armaturesolenoid pilot valve. Thesevalves are generally used tocontrol the movement of awork cylinder or the rotationof a fluid motor.Pressure Centered ModelsDesignated by ‘‘D’’ underspring/spool arrangement inmodel code.Jconnection ‘‘Y’’ becomes adrain connection and mustbe pioped directly to tankat atmospheric pressurethrough a surge-free tankline. Back pressure at thisconnection would causevalve to malfunction.Caution: Spring offsetmodels contain a highassembled spring load. CallEaton Service for disassemblyinstructions.This option provides faster,more positive springcentering time by use of pilotpressure to center the spool.The valve spool is returnedto center position whenpilot pres sure is applied atboth ends of the spool. Thecentering springs are used inaddition to pilot pressure toensure positive centering ofspool.Spring Centered ModelsIf pilot pres sure fails or fallsbelow the required minimum,the spool will spring return tothe center position. Pilot pressure is not available throughthe use of and integral checkvalve. Pressure centeredvalves have a drain port ‘‘W’’and must have provisions forthis feature.Designated by a ‘‘Blank’’under spring/spoolarrangement in model code.Designated by ‘‘C’’ underspring/spool arrangement inmodel code.A spring and washerarrangement is used onboth ends of the spool. Ifcontrol pressure is removed,the valve will go to centerposition due to spring force.No-Spring ModelsWhen the solenoid is deenergized, the spool returnsto the last position attained.Performance CharacteristicsPressure centered valves requirea pilot valve which directs pilot oilto connections ‘‘X’’ and ‘‘Y’’ of thevalve at the same time pressurecentering is desired. The centeringtime depends on the rate ofpressure rise in the pilot chamber.Spring centered, pressurecentered and spring offsetmodels require continuouspilot pressure to maintainshifted position. Springcentered models return valvespool to center position bycentering springs when pilotpressure fails or falls belowminimum requirement.Spring Offset ModelsShift TimesDesignated by ‘‘A’’ underspring/spool arrangement inmodel code.Shift times are defined asthe time from pilot pressureapplication/removal tothe point of the s tart ofa pressure rise/decline inappropriate port.NoteSpring offset model has aninternal spring which returnsthe spool to offset positionwhen the pilot connection‘‘X’’ is open to tank. PilotJ-6EATON DG3V-8 & DG5V-8 10 Design E-VLVI-SS001-E1 October 2015Caution: Flow conditionsof the spring centeredposition must be selected with care,both for the effect on the directionof the flow, and the pilot pressure. (The “9” main spool will notensure sufficient pilot pressure inthe center position for internal pilotpressure models).Pressure centered models:Valve spool is returnedto center position by pilotpressure, when pilotpressure is removed. If pilotpressure fails or falls belowthe required minimum, thevalve spool will spring returnto center position. (At springcentered valve flow rates ).Caution: Surges of oil ina common tank lineserving these and other valvescan be sufficient enough to causeinadvertent shifting of these valves.This is very critical in the no-springdetented valves. Separate tanklines or a vented manifold with acontinuous downward path to tankis necessary.NoteAny sliding spool valve, if held forlong periods of time, may s tick andnot spring return due to fluid residueformation and therefore, should becycled periodically to prevent thisfrom happening.Shifting ActionThe pilot valve solenoids ofspring centered, pressurecentered, and spring offsetmodels must be energizedcontinuous ly to keep themain stage spool in theshifted position. No-springdetented models only needto be energized momentarily(for approximately 0.1second).Spring centered and pressurecentered models return thevalve spool to the centerposition when both solenoidsare de-energized or pilotpres sure fails or falls belowminimum requirements.Spring offset models returnthe spool to the offsetposition by pilot pres surewhen the solenoid is deenergized.When no-spring detentedmodels are de-energized, thepilot and main spools remainin their las t position as longas there are no unusualshock, vibration, or pressuretransients, and the spool axisis horizontal. If pilot pressurefails or falls below minimumrequirements, the main spoolwill spring center (at springcentered flow rates ), butwill not drift to a reversal offlow position. The pilot stagewill remain in the detentedposition.When used as other than anormal 4–way valve, consultyour Eaton representative.
3690X33Functional SymbolsY33bSpoolTypeo andboaCenter6262222222Positionb 10 boDG4V-5-*Cvalves0a0111 Spool Types36367811a33133aa117The following are shown in a11 example:DG3V-8-*COpposite Hand, DG3V-8-*ALXPXTBab563133abPTYBAAY56Spring Centered, DG3V-8-*C61XPXbPT2. Stroke adjusters at either31or at both ends (shown atboth 33ends in example)b aXPXTBabPTYBAYAOne or more options canbe built 52into any DG3 seriesvalve.5652152156156122bXo aPTbYBBAAo aPTTransient condition only.Both ports T A and T B are available.o ab3345211. Pilot chokemodule131352JDG3V-8 Options83531TransientTransient conditioncondition only.only.561BothportsTT A andTonly.are avaTransientBothportsconditionA and T BB are avaBoth ports T A and T B are avaTransient condition only.Both ports T A and T B are ava688 Spring Offset, End-to-End,Spring Offset, 215615615215615613Comprehensive and simplifiedY33symbols.75221o45613X33DG3V-8 Pilot Operated Models -*B valves00DG4V-5-*Bvalves01Notes:0111. In the detailedand simplified212symbols on this2 and the previouspages, the transientpositions are323omitted for simplicity.362-position valves, the2. In certain 36“o” position6becomes an additional7transient, i.e.67in DG5V-8-*A(L) and7DG5V-8-*N 22313333313323Your Eaton52representative can523352 5215615215615612521561a52135101X21transients.1 Shown in 3-position form, plus 2231122X22Y233boa3235223b3Y20X334636 521636X33767Y3317X268978Y33V-5-*N valvesDG4V-5-*Avalves8821108 Y221191181135313132 X33116131131313531613223133Y3331333331522333oa9 b334o5252 8b33520V-5-*C valvesDG4V-5-*Bvalves524521115656520 5-*BL valves00DG4V-5-*BLvalves0YBBAo aYATEATON DG3V-8 & DG5V-8 10 Design E-VLVI-SS001-E1 October 2015J-7
Functional SymbolsDG5V-8, Solenoid Controlled, Pilot Operated ModelsComprehensive and simplified symbols shown configured forexternal pilot supply and internal drainSpring Offset, End-to-End,DG5V-8-*AboaPXbSpring Offset, End-to-End,Opposite Hand, DG5V-8-*ALTBYBAAbPYTTBPPABAABXAaXPABYYBXAT2.Stroke adjusters, ateither or at both ends(shown at both ends inexample)Y3.External pilot connection4.Internal drain2boa34XPAOne or more options canbe built into any DG5 seriesvalve.TBYBAo abXJ-8PAP12PBABAaToYTEATON DG3V-8 & DG5V-8 10 Design E-VLVI-SS001-E1 October 2015aTBYabThe following are shown in aDG5V-8-*C example:Pilot choke moduleoYDetented, DG5V-8-*NDG5V-8 Options1.TBbTBPPAPYo aTo abo aoPYTbYbSpring Offset, End-to-Center,Opposite HandDG5V-8-*BLo ababSpring Offset, End-to-CenterDG5V-8-*BXX XaPJobSpring Centered, DG5V-8-*CTY
Operating DataMAXIMUM PRESSURES:DG3V-8 valves; ports:P, A, B and T *Y§350 bar (5000 psi)350 bar (5000 psi)DG5V-8 valves, (externally drained)P, A, B, T and X *Y§350 bar (5000 psi) 350 bar (5000 psi)DG5V-8 valves, (internally drained)P, A, B and XT§Maximum flow without mal-function (DG3V-8 and DG5V-8)Pilot pressures350 bar (5000 psi) 350 bar (5000 psi)700 L/min (185 Usgpm)See “Pilot Pressures” on page 28ELECTRICAL INFORMATION:Voltage ratings, DG5V valvesSee 17 in “Model Code” on page 5Voltage limits, DG5V valves:Maximum voltageMinimum voltageSee “Temperature limits”, on page 1090% of rated voltagePower consumption, DG5V valves with AC solenoids:Dual-frequency coils at 50 Hz, types “B” and “D”Dual-frequency coils at 60 Hz, types “B” and “D”Power consumption, DG5V valves with DC solenoidsInitial VA rmsHolding VA rms265492604830W at rated voltage and 200C (680F)Relative duty factor, DG5V valvesContinuous; ED 100%Type of protection, DG5V valves:ISO 4400 coils with plug fitted correctlyJunction boxCoil windingIEC 144 class IP65IEC 144 class IP65 (NEMA 4)Class HLead wires (coil types “F****”)Coil encapsulationClass HClass FJNote: For information on pilot valves please refer segment B, C, D of the catalog. The DG5V, 10 design two-stage valves have been designed to satisfy the needs of most applications.Consult your Eaton representative about an alternative model if:a) Valves are required to remain pressurized for long periods without frequent switching, and /orb) Back pressure on the drain port of externally drained models (or the tank port of internally drained models) is required to rise above 350 bar (5000 psi).* The method for verifying the rated fatigue pressure of the complete unit conforms to NFPA/T2.6.1 R1-1991 (Catalog C/90), Fluid Power Systems and Products method for verifying thefatigue pressure rating of the pressure containing envelope.§ Internal drain models drain the pilot valve through the tank port of the mainstage. External drain models drain the pilot valve through the ‘‘Y’ port of the mainstage. To provide properoperation without malfunction, the pilot pressure must always exceed tank or drain line pressure by the minimum pilot pressure required per valve and spool type (see charts on page16). Tank or drain line surges which would reduce this differential are to be avoided as they may cause the mainstage to shift. Mainstage tank pressure is limited to the tank linerating of the pilot valve on internally drained models (with ‘‘T’’ included in the model code). Internal drains may be used with all models except pressure centered ‘‘D’’ models. Pressurecentered models must be externally drained through ‘‘Y’’ and ‘‘W’’ ports. To achieve the maximum tank line rating of 350 bar (5000 psi) of the mainstage, an external pilot drain must beused and it is recommended that a separate line be provided directly to the tank.EATON DG3V-8 & DG5V-8 10 Design E-VLVI-SS001-E1 October 2015J-9
Operating DataSee page 11, 12Pressure drop characteristicsResponse times, DG5V valves:Typical values for a DG5V-8-2C-E spring centered, externally piloted valve under standard test conditions and operating with 150 L/min (40 USgpm) at350 bar (5000 psi).Coil rating:Pilot pressure, bar (psi):EnergizingTime, ms De-energizing110V 50 Hz15 (218)50 (730)150 (2180)210 (3000)250 (3600)15 (218)50 (730)150 (2180)210 (3000)250 (3600)75504040409065555555404040404045 45 45 45 45 24V DC From applying a signal at the solenoid until the main-stage spool completes its travel. In pure switched circuit conditions, devoid of the effects of any suppression diodes and full-wave rectifiers.TEMPERATURE LIMITS:Fluid temperature limitsAmbient temperature limits:Minimum ambient, all valvesJSee appendixSee appendix-20 C (-4 F)Maximum ambients, DG5V valves with coils listed in 12 in “Model Code” two pages back, and under conditions stated below:Dual-frequency coils:at 50 Hz and 107% of rated voltage65 C (150 F)at 50 Hz and 110% of rated voltage65 C (150 F)at 60 Hz and 107% of rated voltage65 C (150 F)at 60 Hz and 110% of rated voltage65 C (150 F)Single-frequency (50 Hz) coils at 50 Hz and65 C (150 F)110% of rated voltageDC coils at 110% of rated voltage70 C (158 F)INSTALLATION DIMENSIONS:ValvesSee page 16 to 25Mass (weight), basic models:DG3V-8-*A(L)kg (lb) approx.10,0 (22.0) DG3V-8-*/*B(L)/*CDG5V-8-*A/B (AC voltages)DG5V-8-*A/B (DC voltages)DG5V-8-*C/N (AC voltages)DG5V-8-*C/N (DC voltages) Add 1,1 kg (2.4 lb) when pilot chock adjustment is fitted.7,3 (16.1) 8,4 (18.5) 8,5 (18.7) 8,7 (19.2) 9,1 (20.0) Note: For information on pilot valves please refer segment B, C, D of the catalog.J-10EATON DG3V-8 & DG5V-8 10 Design E-VLVI-SS001-E1 October 2015
Performance DataDG3V – 8 ModelsTypical with mineral oil at36 cSt (168.6 SUS) and aspecific gravity of 0.87.SpoolTypeMaximum flow ratesPerformance based on fullpower solenoid coils warmand operating at 90% ratedvoltage.Pressure Drop & MalfunctionFlowThe following table lists theappropriate pressure dropcurve and malfunction flowcurve between ports for eachspool type. Use the followingexample to determinepressure drop for a selectedspool.Example: Find the pressuredrop from P B for type 7spool. Using the table findnumeral 7 in the spool typecolumn. To the right ofnumeral 7 find the referencecurve 2 (from pressure dropcurve chart at bottom ofpage) under P B column.Pressure Drop Curve NumberP AB TP BA TP T in 44342561314–72221–8434259232228 bar 400 psid)@ 189 L/min(50 USgpm)331312–35See page 28522–44–521244––on curve 1 (from malfunctionflow curve chart at bottom ofpage).1.The pressure drop fromP B for type 7 spool wouldbe obtained on curve 2.Likewise, the malfunction fornumeral 7 would be foundFigures in the pressuredrop chart giveapproximate pressuredrop (ΔP) when passing473 l/min (125 USgpm)flow (Q) of 35 cSt (164SUS) fluids(s) having.865 specific gravity.Pressure Drop Curves2.For any other flowrate (Q1), the pressuredrop (ΔP1) will beapproximately:ΔP1 P(Q1/Q)2.3.For any otherviscosity(s), the pressuredrop (ΔP), will change asfollows:ViscositycSt(SUS)% of PΔ(Approx.)14(17.5)8120(97.8)884005000PRESSURE DROP – bar24,0435020,03 1)11111For any other specificgravity (G1), the pressuredrop (ΔP1) will beapproximately:ΔP1 53060668120400040 60 80 100 120 140 160 180 9454530606681PRESSURE DROP – psi600027,5043(200)1042FLOW – USgpm80 100 120 140 160 180 2004505PRESSURE DROP – bar60PRESSURE DROP – psi31,0404.13322231114Malfunction Flow CurvesFLOW – USgpm20Malfunction FlowCurve Number0757FLOW – L/min0757FLOW – L/minEATON DG3V-8 & DG5V-8 10 Design E-VLVI-SS001-E1 October 2015J-11
Performance DataDG3V-8 ModelOffset to OffsetResponse TimeThe response time shownin the charts are definedas the time between pilotpressurization/de-pressurization and theinitial change in the inlet portpressure.6070280310350Low shock spring return40Time - msecPilot pressure - bar140 175 210 240100Low shock shift50Fast response shift3020SPRING CENTERING TIMES @RATED FLOW & PRESSURESpool TypeClosed CenterOpen Center3510Time.040 sec.050 sec.0Fast response spring t pressure - psiCenter to OffsetCentering Times for PressureCentered Valves @ RatedPressure (A to P or B to P)Pilot pressure - bar3580ee malfunction flow curves on page 7.350 bar (5000 psi)350 bar (5000 psi)350 bar (5000 psi)nforms to NFPA/T2.6.1 R1-1991e fatigue pressure rating of the70100140175210240280310350Time - msec706050Low shock4030Fast 4500Pilot pressure - psiPressure Drop Across Check ValveTo prevent load drop, a check valve inthe pressure port can be used to preventreverse flow from a cylinder port to thepressure port.J-1248,3PRESSURE DROP - barFor internal pilot pressure, an integralpressure port check valve is available. Thisback pressure will be present at the cylinderports. The pilot pressure generated is thetotal of: P T drop through the valve incenter condition, pressure drop through thecheck valve, plus the pressure at the tankport.020406014016018020041,4600“S” Spring34,527,6500400“R ” Spring30020,713,8“K” Spring6,90700“Q” Spring0EATON DG3V-8 & DG5V-8 10 Design E-VLVI-SS001-E1 October 1.3FLOW - L/min200100PRESSURE DROP - psiFLOW - USgpm80 100 120Integral Check Valves
Performance DataDG5V-8 ModelPressure Drop & Malfunction FlowExample: Find the pressuredrop from P B for type 7spool. Using the table findnumeral 7 in the spooltype column.To the right of numeral 7 findthe reference curve 2 (frompressure drop curve chart atbottom of page) under P Bcolumn.The pressure drop fromP B for type 7 spool wouldbe obtained on curve 2.Likewise, the malfunction fornumeral 7 would be foundon curve 1 (from malfunctionflow curve chart at bottomof page).1.2.Figures in the pressuredrop chart giveapproximate pressuredrop (ΔP) when passing473 l/min (125 USgpm)flow (Q) of 35 cSt (164SUS) fluids(s) having.865 specific gravity.For any other flowrate(Q1), the pressuredrop (ΔP1) will beapproximatelyΔP1 ΔP(Q1/Q)2.ViscositycSt14(SUS)(75)% of PΔ 93(Approx.)32(150)111SPOOLTYPEPRESSURE DROP CURVE NUMBERP AB TP BA T02 2 2 2 2233131235ASee page 28522–44521244–Pressure Drop Curves2040 60350420,03 54FLOW – 0006066810757PRESSURE DROP – barPRESSURE DROP – bar24,0227For any other specificgravity (G1), the pressuredrop (ΔP1) will beapproximately:ΔP1 ΔP(G1/G).13322231114––400764.MALFUNCTIONFLOW CURVE NUMBERP T In Center3 23–––5––528 bar (400 psid)@ 189 L/min(50 USgpm)–80 100 120 140 160 180 200450527,50For any otherviscosity(s), the pressuredrop (ΔP), will change asfollows:Malfunction Flow CurvesFLOW – USgpmPRESSURE DROP – psi31,043(200)1193.20FLOW – USgpm40 60 80 100 120 140 160 180 227379530303454FLOW – L/min606681PRESSURE DROP – psiThe following table lists theappropriate pressure dropcurve and malfunction flowcurve between ports for eachspool type. Use the followingexample to determinepressure drop for a selectedspool.0757EATON DG3V-8 & DG5V-8 10 Design E-VLVI-SS001-E1 October 2015J-13
Performance DataDG5V-8 ModelResponse TimesSolenoid EnergizingMounting PositionResponse times are definedas the time from solenoidenergization/de-energizationto the point of the start ofa pressure rise/decline inappropriate port.Spring centered, pressurecentered and spring offsetDG5V-8 types must beenergized continuously.No-spring detentedDG5V-8 type may beenergized momentarily.Pressure centered and springcentered DG5V-8 typesreturn valve spool to centerposition when both solenoidsare de-energized.No–spring detented valvesmust be installed with thelongitudinal axis horizontalfor good machine reliability.The mounting positionof spring centered andspring offset models isunrestricted provided thatthe pilot pressure supplyis maintained as required.(Spring offset valves do nothave a spring in the mainspool section).Offset to Offset3560100Pilot pressure - bar140 175 210 240280310350SPRING CENTERING TIMES @RATED FLOW & PRESSURELow shock solenoid shift50Time - msec70Spool TypeClosed CenterOpen CenterLow shock spring return40Time.040 sec.050 sec.Fast response solenoid shift3020100JFast response spring t pressure - psiCentering Times for PressureCentered Valves @ RatedPressure (A to P or B to P)Center to OffsetPilot pressure - bar3570100140175210240280310350701206010050Low shock4030Fast response2007014021010002000300080604020010Pilot pressure - psi01000500J-14Pilot pressure - barTime -- msecTime - msec8020001500300025004000350050004500EATON DG3V-8 & DG5V-8 10 Design E-VLVI-SS001-E1 October 2015Standard Low ShockFast Response
Optional FeaturesFor proper operation, totalpressure drop must begreater than the minimumrequired pilot pressure (seechart). To prevent load drop,a check valve in the pressureport can be used to preventreverse flow from a cylinderport to pressure port. Ifusing as reverse flow check,maximum reverse pressureis limited to 210 bar(3000 psi).FLOW - USgpm48,302040608010012014016018020041,4600“S” Spring34,527,6500400“R” Spring30020,713,8200“K” Spring6,90700100“Q” Spring0151.475.7302.8227.1454.2378.5PRESSURE DROP - psiFor internal pilot pressure, anintegral pressure port checkvalve is required for internallypiloted valves with opencenter spools (0,1,4,8 & 9).The pilot pressure generatedis the total of: P T dropthrough the valve in centercondition, pressure dropthrough the check valve, plusthe pressure at the tank port.Pressure Drop Across Check ValvePRESSURE DROP - barIntegral Check Valves605.6529.9757.0681.3FLOW - L/minJEATON DG3V-8 & DG5V-8 10 Design E-VLVI-SS001-E1 October 2015J-15
Installation DimensionsDG3V-8-(C)-*-*-10 SpringCentered ModelPressure PortØ 25,0 (0.98) Std. ModelØ 27,3 (1.07) P-Port Check Model130,2(5.13)Millimeters (inches)Tank PortØ 25,0 (0.98)53,2(2.09)Pilot Pressure Port Y35,4(1.39)46,1 (1.81)70,8(2.79)92,1(3.63)Pilot Pressure Port XPort AØ 25,0 (0.98)81,0 (3.19)Mounting bolt holesØ 13,5 (0.53)6 places77,0(3.03)153,0 (6.02)Port BØ 25,0 (0.98)164,9 (6.49)75,0(2.95)118,5(4.67)See pilot ch
S - 5,20 bar (75 psi) check Solenoid Energization Identity Blank - Standard arrangement for ANSI B93.9 (i.e. energize solenoid A to follow flow P to A). V - Solenoid identification determined by position of solenoid (i.e. solenoid A at port A end/solenoid B at port B end). Note 4 and 8 type spools are always V. Solenoid
4, 5 port pilot operated valve 4TB 5 port pilot operated valve (pneumatic valve) 4L2-4/LMFO 3, 4, 5 port pilot operated valve (pneumatic valve) 4KA/4KB 5 port pilot operated valve (pneumatic valve) 4F 5 port pilot operated valve (ISO conformed valve) PV5G/PV5/CMF 3 port direct acting valve (small pneumatic valve) 3MA0/3MB0
Solenoid Controlled Pilot Operated Directional Valves Solenoid Controlled Pilot Operated Directional Valves These valves are composed of a solenoid operated pilot valve and a pilot operated slave valve. When a solenoid is energised the pilot valve directs the flow to move the spool of the slave valve, thus changing the direction of flow in the .
Apr 18, 2018 · SERIES 700 PAGE Series 740: Bi-directional Knife Gate Valve 4 Series 745: Bi-directional Slurry Valve 4 Series 746: Bi-directional Slurry Valve 5 Series 752: Bi-directional Slurry Valve 5 Series 755: Bi-directional Slurry Valve 6 Series 760: Bi-directional Slurry Valve 6 Series 762: Bi-directional Slurry Valve 7 Series 765: Bi-directional Slurry Val
SOLENOID CONTROLLED PILOT Up to 31.5 MPa (4570 PSI), 1100L/min (291 U.S.GPM) Pub. EC-0404 PILOT OPERATED DIRECTIONAL VALVES OPERATED DIRECTIONAL VALVES . Pilot Drain Port for Solenoid Controlled Pilot Operated Directional Valve Avoid connecting the valve pilot drain port to a line with
Technical leaflet Pilot operated main valves for regulating pressure and temperature, type PM Design, function PM1 The PM main valve is a pilot operated valve whose function is determined by the pilot valve used. The main valve with pilot valve(s) controls refrigerant flow by modulation or on/off in accordance with the pilot valve or main valve
Pilot Operated Directional Valves Catalog DG3V-10 Hydraulic Pilot Operated; 1100 l/min (290 USgpm) 350 bar (5000 psi) DG5V-10 Solenoid Pilot Operated; 1100 l/min (290 USgpm) 350 bar (5000 psi) NFPA D10, ISO-4401-10, CETOP 10. 2 EATON Vickers Pilot Operated Directional Valves Catalog V-VLDI-MC004-E March 2007 . integral check valves and port .
Pilot-operated servo valve Type ICS ICS pilot-operated servo valves belong to the ICV (Industrial Control Valve) family. The valve comprises three main components: valve body, function module and top cover. ICS pilot-operated servo valves are pilot operated valves for regulating pressure, temperature and ON/OFF function in refrigeration systems.
Data sheet Pilot-operated servo valve, type ICS Danfoss DCS MWA) 2016.01 DKRCI.PD.HS2.A9.22 520H8639 5 Function ICS 1 Pilot The ICS main valve is a pilot operated valve. The types of pilot valves used determine the function. The ICS main valve with pilot valve(s) controls refrigerant flow by modulation or on/off in
