PV72-31 Proportional Flow Control Cartridge, (PV72-31)
A solenoid operated, electrically-variable, three-port, pressure-compensated, spool-type, normally open 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, two-way, pressure-compensated flow regulator when the bypass line (port ➁) is blocked.
Product Operation
The PV72-31 will regulate flow out of port ➂ regardless of system working pressure. With increasing current applied to the solenoid, the PV72-31 will decrease 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.
Product Features
• Excellent linearity and hysteresis.
• Hardened spool and cage for long life.
• Effi cient wet armature construction.
• Optional coil voltages and terminations.
Product Ratings
Operating Pressure: Port ➀: 240 bar (3500 psi); Ports ➁ and ➂: 207 bar (3000 psi)
Regulated Flow Rate in 3-Port Mode: Range A: 53 lpm (14 gpm)
Range B: 38 lpm (10 gpm)
Maximum Input Flow in 3-Port Mode: Range A and B: 114 lpm (30 gpm)
Maximum Flow Rate in 2-Port Mode: Range A: 42 lpm (11 gpm)
Range B: 31 lpm (8 gpm)
Note: For increased flow capacity in a 2-port flow control, see model PV72-21
Internal Leakage: .38 lpm (0.1 gpm) 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: VC12-3; See page 9.112.1;
Cavity Tool: CT12-3X-XX; See page 8.600.1
Seal Kit: SK12-3X-MM; See page 8.650.1 for seal kit options and appropriate seals based on application temperature range.
