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DESCRIPTION
A solenoid-operated, electrically-variable, 3-port, normally closed, pressure-compensated, proportional flow control, spool-type, screw-in hydraulic cartridge valve. It can be used as a priority-type flow regulator with pressure-compensated, regulated and bypass flow. It can also be used as a restrictive-type 2-way, pressure-compensated flow regulator when the bypass line (port 2) is blocked.
OPERATION
The PV72-30 will regulate flow out of port 3 regardless of system working pressure.
With an increasing current applied to the solenoid, output flow will increase.
Note: When used as a bypass flow control in applications where the priority flow port will be blocked by external valving (dead-headed), bypass pressure drop will increase unless a small amount of leakage is provided for the priority port. Consult factory.
Manual Override: To Engage: Turn clockwise approximately 1 turn to reach start point.
Continue another approximately 5 turns to full shift.
To Disengage: Turn counterclockwise approximately 6 turns until positive stop is found.
FEATURES
• Excellent linearity and hysteresis characteristics.
• Hardened spool and cage for long life.
• Optional coil voltages and terminations.
• Efficient wet-armature construction.
• Cartridges are voltage-interchangeable.
• Unitized, molded coil design.
• Coil waterproofing standard.
• Manual Override option.
RATINGS
Operating Pressure: Port 1: 240 bar (3500 psi); Ports 2 and 3: 207 bar (3000 psi)
Regulated Flow in 3-Port Mode: Range A: 57 lpm (15 gpm); Range B: 38 lpm (10 gpm)
Max. Input Flow in 3-Port Mode: Range A and B: 114 lpm (30 gpm)
Max. Flow in 2-Port Mode: Range A: 53 lpm (14 gpm); Range B: 31 lpm (8 gpm)
Note: for increased flow capacity in a 2-port flow control, see model PV72-20
Internal Leakage: 38 lpm (0.1 gpm) fully closed at 207 bar (3000 psi)
Electrical: 2 standard voltage ratings:
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Coil Voltage
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Threshold Current
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Max. Control Current
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12 VDC
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350 ±100 mA
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1600 ±200 mA
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| 24 VDC |
175 ±50 mA |
800 ±100 mA |
Temperature: -40° to 100°C (-40° to 212°F) with Buna seals;
-26° to 204°C (-15° to 400°F) with Fluorocarbon seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC12-3; See page 9.112.1_3w
Cavity Tool: CT12-3x-xx; See page 8.600.1
Seal Kit: SK12-3x-MM; See page 8.650.1
RECOMMENDED ELECTRONIC CONTROLLERS
The EVDR Series controllers are recommended for use with most HydraForce proportional valves. These newer electronic controllers are versatile, reliable, and easily configured and customized for a wide range of applications. See the EVDR Product Selection Guide.
For other Electronic Controllers, see page 2.001.1_pdf
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