PV70-30 Proportional Flow Control Cartridge,
DESCRIPTION
A solenoid-operated, electrically-variable, three-port, pressure-compensated, spool-
type, normally closed when de-energized, proportional flow control 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 PV70-30 will regulate flow out of port 3 regardless of system working pressure.
With an increasing current applied to the solenoid, the PV70-30 will increase output
flow.
Note: When used as a bypass flow control in applications where the priority flow port
will be blocked by external valving, bypass pressure drop will increase unless a small
amount of leakage is provided for the priority port. Consult factory.
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 to positive stop.
FEATURES
• Excellent linearity and hysteresis.
• Hardened spool and cage for long life.
• Optional coil voltages and terminations.
• Efficient wet armature construction.
RATINGS
Operating Pressure: Inlet: 240 bar (3500 psi); Ports 2 and 3: 207 bar (3000 psi)
Regulated Flow Rate: Bypass Blocked, Range A: 26 lpm (7 gpm)
Bypass Blocked, Range B: 17 lpm (4.5 gpm)
Bypass Open, Range A: 30 lpm (8 gpm)
Bypass Open, Range B: 17 lpm (4.5 gpm)
Maximum Input Flow: Bypass Open, Range A: 50 lpm (13 gpm)
Bypass Open, Range B: 26 lpm (7 gpm)
Internal Leakage: 197 cc/min. (12 cu. in./min.) fully closed at 207 bar (3000 psi)
Electrical: 2 standard voltage ratings
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: VC10-3; See page 9.110.1
Cavity Tool: CT10-3X-XX; See page 8.600.1
Seal Kit: SK10-3X-MM; See page 8.650.1 for seal kit options
and appropriate seals based on application temperature range.
USASI/ISO:
SYMBOLS
2.372.1
PERFORMANCE
20
PERCENT OF MAX. CONTROL CURRENT
FLOW lpm/gpm
Flow vs. Current
207 bar/3000 psi; 12V Coil; 110 Hz PWM
32 cSt/150 sus oil at 40°C
Range A, 2-Ported
Range A, 3-Ported
Range B, 2-Ported or 3-Ported
40 60 80 100
37.9/10
30.3/8
22.7/6
15.1/4
7.6/2
Threshold Current
250 ± 100 mA
125 ± 50 mA
Coil Voltage
12 VDC
24 VDC
Max. Control Current
1250 ± 150 mA
600 ± 75 mA
ELECTRO-PROPORTIONAL VALVES—FLOW CONTROLS
Performance info. continued on following page.
HYDRAFORCE
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®
• Cartridges voltage interchangeable.
• Unitized, molded coil design.
• Coil waterproofing standard.
• Manual override option.
Recommended Electronic Controllers:
See page 2.001.1 or our Electronics catalog.
Blue rectangles are links to other catalog pages.