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PFR70-33x-F Proportional Priority Flow Regulator, (PFR70-33x-F)

A pressure-compensated electrically-variable three-port flow regulator that is a priority (bypass) type control. This combination valve uses a PV70-33x proportional cartridge and an EC10-40 compensator.

Product Operation

The PFR70-33x-F series will bypass all flow out port ➂ when de-energized at the pressure compensator spring value. When energized, this proportional valve/compensator package will increase and regulate flow out of port ➁, regardless of system working pressure, with an increasing current applied to the solenoid.

Product Features

• Excellent linearity and hysteresis.
• Optional control orifice sizes.
• Hardened spool and cage for long life.
• Optional coil voltages and terminations.
• Efficient wet armature construction.

Product Ratings

Operating Pressure: 207 bar (3000 psi)
Pressure Rise: Pressure at ➀ begins to rise higher than the compensating pressure differential when bypass flow exceeds 26.5 lpm (7 gpm).
Internal Leakage: 410 cc/min. (25 cu. in./min.) fully closed at 207 bar (3000 psi) out port ➁
Electrical: 2 standard voltage ratings
Operation of 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.
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;
Filtration: See page 9.010.1
For 12 volt coils, double the current (amp) values shown.37.9/1041.4600LOAD bar/psiFLOW lpm/gpmPriority Port Flow Rate Loss Under LoadPV70-33B with EC10-40 Typical11 bar/160 psi compensator —5.5 bar/80 psi compensator – – -2.8 bar/40 psi compensator • • •82.81200124.11800165.52400206.9300034.1/930.2/822.7/615.1/47.5/226.5/718.9/511.4/33.8/1
Attention Manifold Designers:To obtain these high flow capabilities using proportional flow controls and compensators, optimized cavity drillings are required. Please consult factory.
ELECTRO-PROPORTIONAL VALVES—FLOW CONTROLS
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• Cartridges voltage interchangeable.
• Unitized, molded coil design.
• Coil waterproofi ng standard.
• Screw-in manual override option.
Threshold
Current (mA)