Vickers Cartridge Valves Logic Elements

1 Revised 9/98724 screw -in Cartridge ValvesPressures to 290 bar (4200 psi) Flows to 303 l/min (80 USgpm) Vickers Cartridge ValvesLogic Elements2 ContentsMODELDESCRIPTIONTYPICALAPPLICATI ONPRESSUREbar (psi)RATED FLOWl/min (USgpm)PAGEI ntroduction3 Pressure control functions4 Applic tion ex mplesFlow control functions5 Application examplesDirectional control functions8 Three-way bridge / Four-way bridge9 PCS3 10210 (3000)38 (10)10 PCS3 16210 (3000)114 (30)12 PCS3 20 Press re compens tor210 (3000)189 (50)14 PCS4 10 Pressure compensator210 (3000)38 (10)16 PCS4 16210 (3000)114 (30)18 PCS4 20210 (3000)189 (50)20 MOS1 10 Mod l ting orifice210 (3000)0 38 (0 10)22 MOS1 16 Modulating orifice210 (3000)0 132 (0 35)24 DPS2 10290 (4200)60 (15)26 DPS2 16 Differential pressure sensing valve290 (4200)189 (50)28 DPS2 20290 (4200)303 (80)30 DPS2 Spool type functional symbols32 DPS2 Poppet type functional symbols33C-**-3(S)

2 St nd rd c vity dimensions34C-**-4 Standard cavity dimensions35C-**-3 SAluminum housings36 Supporting productsRoughing & Finishing tools37 Application data383 Introduction For over 70 years, Vickers has providedits customers with quality products andinnovative solutions for all their powerand motion control products featured in this catalogrepresent the very best in screw -incartridge Logic element valve are committed to maintaining thisposition by offering the mostcomprehensive range of cartridgevalves for industrial and catalog gives basic specificationsfor Vickers Logic Elements screw -incartridge Valves .

3 Its purpose is toprovide a quick, convenient referencetool when choosing Vickers cartridgevalves or designing a system usingthese cartridges have hardened andground poppets and sharp-edgedground steel seats. This provides anexcellent product that is dirt-tolerant, hasreliable seating, and is suitable for fastcycling with long Vickers cartridges provide thesystem designer with a versatile rangeof Elements for use in MCD packagesfor controlling pressure, flow range includes:D Pressure compensators(hydrostats)D Pressure compensators withpriority and bypass outletsD Differential pressure sensingelementsD Flow modulated orifice cartridgesThe correct selection of these productscan enhance machine performance,shorten the design process andminimize manufacturing costs ofmanifold compensators (hydrostats) PCS3An essential component of a pressurecompensated flow control which, with anexternal fixed or variable orifice, providesthe required compensated flowcharacteristic.

4 Excess flow is diverted atmaximum system pressure. Excess fluidupstream must be diverted through arelief to compensator withpriority and bypass outlets PCS4 Similar in function to the PCS3. Themajor difference is that excess flow isdiverted at priority flow pressure, insteadof at maximum system pressure, as isthe case with PCS3 compensators. Theexcess flow can pass to a secondarycircuit or to modulated orificecartridges MOS1 The MOS1 cartridges are used asmodulated cartridges are particularlyeffective when used with an externalpressure compensator (hydrostat) suchas a PCS3 or PCS4 type.

5 The PCS3provides normal pressurecompensation. The PCS4 providespressure compensation for priority low pilot pressure required allowsproportional control when used with anEPV2 proportional pilot pressure sensingelements DPS2 For controlling pressure, flow or direction(including 3- and 4-way bridge circuits)the DPS2 is used with the aid of externalpilot operators. The DPS2 Elements arefunction building blocks which respondto pressure differential signals, providingthe capacity to switch or modulate flowsup to 303 l/min (80 USgpm) andpressure to 350 bar (5000 psi).

6 The choice of pilot arrangements relatedto DPS2 variants can minimize thenumber of construction holes in amanifold, simplifying design andreducing ExamplesPilot pressuresourceFixedrestrictorPilot reliefvalveDPS2-**-P differentialpressure sensingcartridgeUni-directional flowPressure relief or Sequence exampleWith external pilot supply and pilot reliefPressure relief or Sequence example, normally openWith internal pilot supply and pilot reliefPilot reliefvalveUni-directional flowPressure reducing exampleNon-relieving typePilot reliefvalveDPS2-**-R differentialpressure sensingcartridgeUni-directional flow123123312 DPS2-**-V differentialpressure sensingcartridgePressure control functions 5 Flow control functions Pressure compensated flow control exampleWith downstream fixed or variable controlDPS2-**-F differentialpressure sensingcartridgeUni-directional flowFixed orvariablerestrictor1231233214

7 MOS1-**modulatingorificeERV2-10proportio nalpilot relief valveUni-directional flowUni-directional flowMOS1-**modulatingorificePCS3-**press urecompensator2311324 ERV2-10proportionalpilot relief valvePressure compensated flow control exampleWith electrohydraulic proportional controldownstreamPressure compensated flow control exampleWith electrohydraulic proportional controlupstreamDPS2-**-F differentialpressure sensingcartridge6 DPS2-**-P differentialpressure sensingcartridge1324 Pressure compensated priority flow control exampleWith fixed or variable priority flow controlFixed or variable priorityflow restrictorUni-directional flowInletFlow control functionsPriority flow outletPriority flow outletPriority flow outletBypass flow outletPCS4-** pressure compensator,priority/bypass typeERV2-10proportionalpilot reliefvalveInlet3243211123 DPS2-**-P differentialpressuresensing cartridgeUni-directional flowBypass flow to tank onlyERV2-10 proportionalpilot relief valveInletMOS1-** modulating orifice 0,78mm ( )

8 Orifice for stabilization3241 Pressure compensated priority flow control exampleForm APressure compensated priority flow control exampleForm BMOS1-**modulatingorificeUni-directional flow7 DPS2-**-P differentialpressure sensingcartridgeLoad sensing priority flow control exampleWith pressure limiting and ventingVariable restrictorFlow control functionsPumpPriority outlet, to loadFixedpilot restrictorPilotdirectionalvalvePressure limiterpilot relief valve123 Uni-directional flowLoad sensing priority flow control exampleDouble acting version with pressure limiterLoad directionalcontrol valveUni-directional flowPumpFixed orvariablerestrictorsLoad service linesPilotsensingchecksFixedpilot restrictorPilotreliefvalveDPS2-**-P differentialpressure sensingcartridge1238 Two-way, two-position.

9 Normally open examplesWith DPS2-**-V Cartridge andinternal pilot supplyDirectional control functions DPS2-**-V differentialpressure sensing cartridgePilotdirectional valve123 Uni-directional flowDPS2-**-B differentialpressure sensing cartridgePilotdirection-al valveUni-directional flow123 With DPS2-**-B Cartridge andinternal pilot supplyWith DPS2-**-S Cartridge andinternal pilot supplyWith DPS2-**-T Cartridge andinternal pilot supplyDPS2-**-S differentialpressure sensing cartridgeDPS2-**-T differentialpressure sensing cartridgePilot directionalvalveUni-directional flowBi-directional flowPilotdirectional valve123123Bi-directional flowBi-directional flowWith DPS2-**-T Cartridge and internalshuttle-selected pilot supplyWith DPS2-**-T Cartridge , external pilot supply andtwo-way two-position pilot directional valvePilotdirectional valvePilotsourceFixed restrictorDPS2-**-T differentialpressure sensing cartridgeDPS2-**-T differentialpressure sensing cartridgePilot directional valvePilotshuttlevalve1122332-way, 2-position, normally openSwitched by 3-way.

10 2-position pilot valveand external pilot pressureDPS2-**-P differentialpressure sensing cartridgeUni-directional flow123 Switched by external pilot pressure andvented through 2-way, 2-position pilotvalveFixedrestrictorPilotpressureso urcePilotdirectionalvalvePilotdirectiona lvalveDPS2-**-P differentialpressure sensing cartridgeUni-directional flowPilot pressuresource1232-way, 2-position, normally open9 PAACPBBPAACPBBPAACPBBT hree-way bridge circuits Form 1, with DPS2-**-TForm 2, with DPS2-**-PForm 3, with DPS2-**-PDifferential pressure sensing cartridgesDifferential pressure sensing cartridgesDifferential pressure sensing cartridgesRequired FlowPathPilot Pressure HtoAvailable from exampleRequired FlowPathPilot Pressure HtoAvailable from examplePthPAPB123 PthPAPB123 ABC00 YesYesNo00 YesY