Pilot Controlled Servo Valves - FrostPoint, LLC
MAKING MODERN LIVING POSSIBLEPilot controlled servo valvesType ICS - Solenoid ValvesPressure Regulating ValvesREFRIGERATION ANDAIR CONDITIONINGTechnical leaflet
Technical leafletPilot controlled servo valves, type ICSContentsPageIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4The ICS Concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Pilots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Ordering valves assembled with pilots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Standard Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-13Spare parts:ICS 25-5 to ICS 25-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14ICS 32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14ICS 40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15ICS 50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15ICS 65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Nominal capacities:Liquid line with/without phase change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Liquid line without phase change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Wet suction line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Dry suction line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Discharge line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Material specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Dimensions and weights:ICS 25-5 to ICS 25-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37ICS 32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38ICS 40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39ICS 50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40ICS 65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 422DKRCI.PD.HS0.A3.22 / 520H3020 Danfoss (USCO / MKS),08-2008
Technical leafletPilot controlled servo valves, type ICSIntroductionICS servo valves belong to the ICV (IntelligentControl Valve) family and are one of two productgroups.The function of ICS valves is dependent on thepilot pressure applied from either a pilot valve orexternal pilot pressure source.ICV types– ICS - Industrial Control Servo– ICM - Industrial Control MotorICS 1 pilot has one pilot pressure connection andICS 3 pilot has three pilot pressure connections.The valve comprises three main components:valve body, function module and top cover.ICS servo valves are pilot operated valves forregulating pressure, temperature, and ON/OFFfunction in refrigeration systems. ICS valves aredesigned for low and high-pressure refrigerants.ICS valves can be used on the high and lowpressure sides, in wet and dry suction lines and inliquid lines without phase change (i.e. where noexpansion takes place in the valve).Features Danfoss (USCO / MKS), 08-2008Designed for industrial refrigerationapplications for a maximum working pressureof 754 psig / 52 bar.Applicable to all common refrigerantsincluding R717 and R744 (CO2) and noncorrosive gases/liquids.Direct coupled connections to eliminate leakpotentialLow temperature steel body (-76 to 248oF)Low weight and compact design.V-port regulating cone ensures optimumregulating accuracy particularly at part load.Function module has a Teflon (PTFE) pistonring ensuring precise control accuracy.Modular Concept– Valve overhaul is performed by simplyreplacing the function module– Possible to convert ICS servo to ICMmotor valveDKRCI.PD.HS0.A3.22 / 520H3020The associated Danfoss pilot valves can be eitherscrewed directly into the ICS valve or connectedvia an external pilot line. Several pilot valves canbe used on one ICS valve to provide numerousvariations in control functions.The ICS valve top cover includes a pressuregauge connection port which can be used tomonitor the valve inlet pressure when settingand adjusting the pilot valves.The spindle in the top cover can be used formanually opening the ICS valve.Manual opening.Pressure gauge connection port to measurevalve inlet pressure.The top cover can be rotated into any one offour positions without affecting the operationof the valve.3
Technical leafletPilot controlled servo valves, type ICSDesignICS valves are designed as pilot operated valvesrequiring minimal pressure differential to open.If the pressure difference is 0 psi/0 bar, the ICSvalve will be closed. If the pressure difference is3 psi / 0.2 bar or more, the ICS valve will be fullyopen. At pressure differences between 1 psi / 0.07bar and 3 psi / 0.2 bar, the opening degree will becorrespondingly proportional.The ICS is available for use with either one, two,or three pilot valves.Two of the three pilot pressure connections (S1and S2) are connected in series while the third (P)is connected in parallel to S1 and S2. This allowsdifferent combinations of pilot valves to be used,thus providing numerous variations in controlfunctions.ApprovalsThe ICV valve concept is designed to fulfil globalrefrigeration requirements.For specific approval information, please contactDanfoss.The ICS valves are approved in accordance withthe European standard specified in the PressureEquipment Directive and are CE marked.For further details / restrictions - see InstallationInstructionValve body and top cover materialLow temperature steelICS valvesDN 25 (1 in.)Nominal boreClassified forFluid group ICategoryTechnical dataThe ICS ConceptDN 32-65 mm (11/4 - 21/2 in.)Article 3, paragraph 3RefrigerantsApplicable to all common refrigerantsincluding R717 and R744 (CO2) and noncorrosive gases/liquids.Use with flammable hydrocarbons cannot berecommended; please contact Danfoss.Temperature range–76/ 248 F (–60/ 120 C).Surface protectionICS 25 - 65:The external surface is zinc-chromated toprovide good corrosion protection.IIPressure rangeThe valve is designed for:Max. working pressure: 754 psig (52 bar g)Opening differential pressure:Fully open: Min. 3 psig (min. 0.2 bar g )Max. Opening Pressure Differential (MOPD),solenoid valves only - at nominal conditions.– 10 W a.c. up to 305 psi (21 bar)– 20 W a.c. up to 580 psi (40 bar)– “Power electronic” up to 725 psi (50 bar )The ICS concept is developed around a modularprinciple. This gives the possibility of combiningfunction modules and top covers with specialvalve body size that is available in a variety ofconnection possibilities.There are five valve bodies available.ICV 254ICV 32DKRCI.PD.HS0.A3.22 / 520H3020ICV 40ICV 50ICV 65 Danfoss (USCO / MKS),08-2008
Technical leafletPilot controlled servo valves, type ICSEach valve body is available with a range ofundersized through oversized connection sizesand types.Valve SizeModule PortSizeFlowCoefficient Cv(Kv)Inches (mm)Connection Type and SizeFPTSWWNODSICS 25-53/16"(5)2(1.7)3/4", 1" 3/4", 1" 3/4", 1", 1¼" 7/8", 1-1/8", 1-3/8"ICS 25-103/8"(10)4.1(3.5)3/4", 1" 3/4", 1" 3/4", 1", 1¼" 7/8", 1-1/8", 1-3/8"ICS 25-155/8"(15)7(6.0)3/4", 1" 3/4", 1" 3/4", 1", 1¼" 7/8", 1-1/8", 1-3/8"ICS 25-203/4"(20)9.3(8.0)3/4", 1" 3/4", 1" 3/4", 1", 1¼" 7/8", 1-1/8", 1-3/8"ICS 25-251"(25)13.3(11.5)1"1"1", 1¼"7/8", 1-1/8", 1-3/8"ICS 321¼"(32)20(17)-1¼"1¼", 1½"1-3/8", 1-5/8"ICS 401½"(40)31(27)-1-1/2"1½", 2"1-5/8"ICS 502"(50)51(44)-2"2", 2½"2-1/8"ICS 652½"(65)81(70)-2½"2½", 3"2-5/8"Each valve body may be fitted with a 1 pilot or3 pilot top cover.In ICS-25, multiple inserts (function modules) areavailable to give different capacities.TypeValve bodysize(USgal/min)ICS25-52.0ICS25-10ICS25-15 Danfoss (USCO / MKS), 08-2008DKRCI.PD.HS0.A3.22 / ICS404031ICS505051ICS6565815
Technical leafletPilot controlled servo valves, type ICSFunctionA-AICS 1 PilotICS 1 Pilot and ICS 3 Pilot1. Body1a Pilot channel to inlet side1b Circular gap between house andmodule2. Top cover2a Pilot channels in top cover2b Pilot insertion hole2c Pressure gauge connection2d Piston top inlet channel2e Cross channel SI to SII2f SI inlet channel2g Circular groove3 Function module3a Cylinder3b Piston3c Valve plate3d Spring3e Cone3f Equalisation orifice3g Spindle3h Spring support platep1p2p3p48Inlet pressurePressure on pistonPressure underneath pistonOutlet pressureManual operating spindleFig. 1ICS 3 PilotsFig. 2The ICS main valve is a pilot operated valve. Thetypes of pilot valves used determine the function.The ICS main valve with pilot valve(s) controlsrefrigerant flow by modulation or on/off inaccordance with the pilot valve and main valvestatus. The manual spindle can be used to openthe valve plate.The maximum pressure (p2) can act on the top ofthe servo piston (3b). p2 normally corresponds tothe pressure, p1 - ICS main valve inlet pressure.Inlet pressure p1 is led, via the drilled channels(1a, 1b, 2f, 2b (pilot), 2a, 2d) in the valve body (1)and cover (2) through the individual pilot valvesand onto the top of the servo piston (3b).The degree of opening of the main valveis determined by the pressure difference(differential pressure) between pressure p2, whichacts on top of the servo piston (3b), and pressurep3, which acts on the underside of the servopiston.The degree of opening of the individual pilotvalves determines the magnitude of pressurep2 and thus the degree of opening of the mainvalve. The equalization hole (3f ) in the servopiston (3b) ensures that pressure p2 is balancedin accordance with the degree of opening of thepilot valve.If this pressure difference is 0, the main valve willbe fully closed.If the pressure difference is 3 psi (0.2 bar) orgreater, the main valve will be fully open.At pressure differences (p2 - p3) between 1 psi (0.07bar) and 3 psi (), the degree of opening will becorrespondingly proportional.The port of the throttle cone (3e) is V-shaped,which provide good regulation characteristic topilot operated main valves even at low loads.P3 pressure is equal to the valve outlet pressure(P4), due to a clearance between the spindle (3g)and the spring support plate (3h) in the functionmodule. The opening degree of the ICS valveis therefore controlled by the application of P2pressure acting on top of the servo piston, whichis equal to or greater than valve outlet pressure(P4).p2 p4 closedp2 p4 3 psi (0.2 bar) fully openp4 p2 p4 3 psi (0.2 bar) proportional degreeof opening.6B-BDKRCI.PD.HS0.A3.22 / 520H3020Note:When ICS valves with 3 pilot ports are used withexternal pressure connector (fig. 2, pos. 61), thevalve port inlet pressure will be isolated.Single Pilot FunctionThe ICS can be fitted with just a single screwedin pilot valve or external pilot connection. Thedegree of opening of the main valve will be inaccordance with the control status of the pilotvalve or external pilot flow control.ICS main valve with one pilot connection is fullyclosed when the pilot valve is fully closed andfully open when the pilot valve is fully open.Otherwise the degree of opening of the mainvalve is proportional to the degree of opening ofthe pilot valve.Multiple Pilot FunctionThe ICS 3 pilot version can be fitted with one, two,or three pilot valves so that up to three multiplefunctions are possible. If the external pilotconnection is used, more functions can be added. Danfoss (USCO / MKS),08-2008
Technical leafletFunction (continued)Pilot controlled servo valves, type ICSIn the ICS three pilot version, the pilot ports arerelated as follows:The pilot valves fitted in ports SI and SII areconnected in series.The ICS 3 pilot operated main valvewill be fully closed if just one of theseries-connected pilot valves is closed and theP port is plugged. The main valve can onlyopen if both pilot valves are open at the sametime.The pilot valve fitted in port P is connected inparallel to the pilot valves in ports SI and SII.The ICS valve will be fully open if the pilot valvein P is fully open, irrespective of the degree ofopening of pilot valves SI and SII.The ICS valve will be fully closed if the pilot valvein P is fully closed and at least one of the valvesin SI or SII is fully closed at the same time. Therelation between the pilot valves in ports SI, SIIand P is shown in Table 1.If the ICS is not fitted with three pilot valves, theunused port(s) must be sealed with a pilot capA or a combination of pilot cap A and blankingplug B. If the pilot cap and blanking plug are fittedas an assembled unit, A B, the channels from thespecific port will be closed. (See Figure 1)If only cap A is fitted, the channels from the portsin question will be open. If the degree of openingof the ICS main valve is not to be a function of themain valve inlet pressure, or if more than threeregulating functions are required, ports SI, SII orP can be fitted with a nipple for the connectionof external pilot pressure. This applies to all ICSversions.The pressure to which the external pilot line isconnected will then determine the main valvefunction. Pilot valves installed in external linesmust be mounted in a type CVH housing.Depending on the function of the pilot valves,the ICS regulating characteristic becomes:on/offproportionalintegral orcascade.ICS main valves are therefore especially suitablefor all forms of temperature and pressureregulating systems.An overview of the types of pilot valves availablecan be found in Table 2, or technical leaflet: “Pilotvalves for operated main valves” (RD4XC).On the following pages, a number of standardconfiguration examples can be found. Theseare only for explanatory purpose. However, byusing the literature regarding pilot valves theseexamples are easier to comprehend.Figure 2Table 1Pilot valve portICS valveSISIIPOpenOpenClosedExample (ICS with 3 pilot nFigure 1Pilot cap A Blanking plug B Danfoss (USCO / MKS), 08-2008Pilot cap ADKRCI.PD.HS0.A3.22 / 520H30207
Technical leafletPilot controlled servo valves, type ICSTable 2Pilots andaccessories for ICSand PM PressureRegulatorsTypeDescriptionCVP (LP)Pilot Valve, Inlet PressureCVP (HP)MWPpsigPart No.0 to 102 psig250027B110020" to 29 psig250027B110120" to 102 psig406027B116458 to 319 psig406027B116058 to 406 psig406027B1161CVP (XP)Pilot Valve, Inlet Pressure363 to 754 psig754027B0080CVCPilot Valve, Outlet Pressure13"-102 psig406/250027B10700 to 102 psig406027B116258 to 319 psig406027B1168CVPP (HP)CVTCVTOCVQ8Pilot Valve, Inlet PressureRangePilot Valve, Diff. PressurePilot Valve, Temperature(Temperature rise opens valve)Pilot Valve, Temperature(Temperature rise closes valve)Pilot Valve, Electronic-40 F to 32 F320027B1110 14 F to 77 F320027B1111 68 F to 140 F320027B1112 176 F to 284 F320027B1116-40 F to 32 F320027B1117 14 F to 77 F320027B1118 68 F to 140 F320027B111929.5" to 72.5 psig250027B11390 to 87 psig250027B114025 to 116 psig250027B1141EVM (NC)Pilot Valve, Solenoid(Normally Closed)Does Not Include Coil-508027B1120EVM (NO)Pilot Valve, Solenoid(Normally Open)Does Not Include Coil-508027B1130-Pilot Blanking Plug--027F1046-External Pilot Connector for ICS 5 to 651/4" FPT-027B2065Pressure Gauge Connection Adapter1/4" FPT-027B2062Pressure Gauge Connection Adapter andSNV-ST 1/4" MPT x 1/4" FPT gauge valve1/4" FPT-148B418062DKRCI.PD.HS0.A3.22 / 520H3020 Danfoss (USCO / MKS),08-2008
Technical leafletAccessories(Table 2 continued)Pilot controlled servo valves, type ICSPressure gauge adapter.Code no.Description027B2062/4 FPT1AccessoriesLL1BB1230.9135.51.40G 1/4 AAF 22B2Pressure gauge connectionmmin./4 FPT1External pilot connection, 1/4’’ female - NPTCode no.ICSDescription5 - 65External pilot connection,1/4’’ female - NPT(incl. damping orifice,D: 1.0 AF 32AF 32M 24 1.5External pilot connectionmmin.Blanking plug for pilot valves.DescriptionCode no.Blanking plug027F1046Other gauge connections available, contact Danfoss.Multi-function toolDescriptionCode no.For all sizes of ICS and ICM 20to 32027H0180For all sizes of ICS and ICM 40to 65027H0181The multi-function tool can be used for:Removing the ICS function moduleOperating the ICS manual spindleManually operating motorized valve type ICM Danfoss (USCO / MKS), 08-2008For further information please see the instructionPIHU0A.DKRCI.PD.HS0.A3.22 / 520H30209
Technical leafletPilot controlled servo valves, type ICSAccessories - Special Pressure Gauge ConnectionsFlarePressure gauge connection, 1/4 in. flare (selfclosing) Must not be used in R 717 plant.(Table 2 continued)DescriptionCode no./4 in. flare027B20411AccessoriesBB1G 1/4 AAF 19B2Pressure gauge connection, 1/4 in. flare (self-closing)/4 in. flare1mmin./4 in. flare1Cutting ringPressure g
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 accordance with the pilot valve and main valve status. The manual spindle can be used to open the valve plate.
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.
Oct 06, 2010 · Servo - Preferably Spektrum . Choose correct servo horn adapter using servo horn chart and press onto servo. 3. After servo is centered, install servo horn on servo using the screw provided with your servo so that in the centered position the servo
Servo solenoid valve, pilot operated Servo-distributeur, piloté Regelventil für Blockeinbau Cartridge-type servo solenoid valve Servo-distributeur en cartouche HRV: High Response Valve HRV – Regelventil NG 6 HRV – Servo solenoid valve NG 6 HRV – Servo-distributeur NG 6 Regelventil NG 6 Servo solenoid valve NG 6 Servo-distributeur NG 6
Data sheet Pilot valves for pilot operated servo valves Danfoss DCS (MA) 2016.04 DKRCI.PD.HN0.B7.02 520H0831 6 Differential-pressure pilot valve, type CVPP (LP) and CVPP (HP) CVPP is a differential-pressure pilot valve
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 .
Pilot valves for servo operated main valves Differential-pressure pilot valve, type CVPP (LP) and CVPP (HP) CVPP is a differential-pressure pilot valve available in low-pressure and high-pressure versions. The pilot valve is used to maintain a constant differential pressure between the CVPP valve reference pressure connection and the ICS or PM
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
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