SYMBOL:
Attention Manifold Designers:
To obtain these high flow capabilities using proportional flow controls and compensators, optimized cavity drillings
are required.
Please consult factory.
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DESCRIPTION
A pressure-compensated electrically-variable three-port flow regulator that normally closed when de-energized. This combination valve uses a PV72-33x proportional cartridge and an EC12-30 compensator.
OPERATION
This proportional valve/compensator package will regulate flow out of port 2 regardless of system working pressure. With an increasing current applied to the solenoid, the PFR72-33x-L will increase output flow.
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 control orifice sizes.
• Optional coil voltages and terminations.
• Efficient wet-armature construction.
• Cartridges are voltage-interchangeable.
• Unitized, molded coil design.
• Coil waterproofing standard.
• Screw-in manual override option.
RATINGS
Operating Pressure: 207 bar (3000 psi)
Internal Leakage: 492 cc/min. (30 cu. in./min.) fully closed at 207 bar (3000 psi) out port 2
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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300 ±200 mA
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1500 ±100 mA
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| 24 VDC |
150 ±35 mA |
750 ±100 mA |
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 |
