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Catalog HY15-3502/US                              Proportional Flow Regulator Valve
                   Technical Information                             Series DFA125C31

            CV
                   General Description
                   3 Way, Normally Closed, Proportional Flow Regulator
                   Valve. Pressure Compensated. For additional informa-
              Check
            Valves
            SH     tion see Technical Tips on pages PV1-PV6.
                   Features
                   •  Analog proportional pressure compensated flow control
                     valve regulates flow proportionally to the input solenoid
              Shuttle
            Valves
            LM       current
                   •  One piece cartridge housing ensures internal
                     concentricity
                                                                                (3)                Reg.
                   •  Coil: Waterproof, hermetically sealed, requires no                             (4)
              Load/Motor
            Controls
            FC       O’Rings; Symmetrical coil can be reversed without                              Inlet
                     affecting performance.                             (1)                          (3)
                                                                       *                          Bypass       *
                                                                                                     (2)
                                                                             (4)  (2)
              Flow
            Controls
                                                                          *Always connect Port (1) to
            PC                                                           Port (4) through .039" orifice.  Not Used
                                                                                                        (1)
                                                                       Performance Curves
                                                                        PWM Current Regulator Recommended
                   Specifications
              Pressure
            Controls
                                                                       Pressure Compensation of Regulated Flow (Port 4)
            LE
                                                                         GPM LPM       Hydraulic Oil 150 SSU @ 100°F (32 cSt)
                    Rated Inlet Flow  75 LPM (20 GPM)
                                                                         20  76.0
                                                                         15  57.0
                    Rated Regulated   56.8 LPM (15 GPM)
                    Flow              Requires (‘SP’ Coil)               12  45.6
            Elements
              Logic
            DC
                    Maximum Input     210 Bar (3000 PSI)                 Flow  9  34.2
                    Pressure At Port 3                                    6  22.8
                                                                          3  11.4
                    Minimum Pressure  13.8 Bar (200 PSI)                         By-Pass Load Higher      Regulated Load Higher
              Directional
            Controls
            MV      Differential                                            0    Than Regulated                Than By-Pass
                                                                            Bar  210  140    70    0      70    140   210
                                                                            PSI 3000  2000  1000   0     1000  2000   3000
                    Maximum Internal  568 cc (35 cu. in.)                                       Pressure
                    Leakage           @ 210 Bar (3000 PSI)
                                                                       Regulated Flow vs. Input Current Stabilized
              Manual
            Valves
            SV      Hysteresis @      >15%                               GPM LPM       Hydraulic Oil 150 SSU @ 100°F (32 cSt)
                                                                         20  76.0
                    100 Hz PWM
                                                                         15  57.0
                    Cartridge Material  All parts steel. All operating   12  45.6
                                      parts hardened steel.              Flow  9  34.2
            Valves
              Solenoid
            PV
                                                                          6  22.8
                    Operating Temp.   -40°C to +93.3°C (Nitrile)
                                                                          3  11.4
                    Range/Seals       (-40°F to +200°F)
                                                                            0
                                      -31.7°C to +121.1°C (Fluorocarbon)                    25            50           75
                                      (-25°F to +250°F)                         0
              Proportional
            Valves
            CE                                                                               Input Current (%)
                    Fluid             Mineral-based or synthetic with
                    Compatibility/    lubricating properties at viscosities  Pressure Drop vs. Flow (Through cartridge only)
                    Viscosity         of 45 to 2000 SSU (6 to 420 cSt)   PSI Bar       Hydraulic Oil 150 SSU @ 100°F (32 cSt)
                                                                         300  20.7
            Electronics
              Coils &
            BC      Filtration        ISO Code 16/13,
                                                                         Pressure
                                      SAE Class 4 or better              200  13.9
                    Approx. Weight    .45 kg (1.0 lbs.)                  100  6.9
            Cavities
              Bodies &
            TD      Cavity            C12-4L                                0
                                      (See BC Section for more details)      LPM        15.2      30.4      45.5      60.8
                                                                                0
                                                                            GPM          4         8         12        16
                                                                                                 Flow (Q)
              Technical
            Data
                                                                   PV53                        Parker Hannifin Corporation
                                                                                               Hydraulic Cartridge Systems
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