Electro-Proportional Valves — Flow Control

PV72-33 — Spool-Type, 2-Port, Normally Closed
  Selection guide - similar valves.
  PDF file of this page.
  STP file for PV72-33.
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PV72-33 Valve

PV70-33 Valve symbol
A solenoid-operated, 2-way, normally closed, proportional valve designed for use with
a pressure compensator to function as an electrically stroked variable flow regulator.

With increasing electric current, the PV72-33 changes from full closed to full open with
flow from port 3 to port 2. Port 1 is used only to pressure-balance the spool and should
be plugged. This valve is intended to function in tandem with standard HydraForce pressure
compensators at pressure differentials of 12 bar (175 psi) or less, or alone in variable volume
pressure-compensated circuits with load sense capability.

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.

• 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.
• Manual Override option.

Operating Pressure: 240 bar (3500 psi)
Internal Leakage: 492 cc/min. (30 cu. in./min.) fully closed at 207 bar (3000 psi)
Electrical: 2 standard voltage ratings:
 Coil Voltage
Threshold Current
Max. Control Current
 12 VDC
300 ±70 mA
1500 ±100 mA
24 VDC 150 ±35 mA 750 ±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: Install D-series coils with two O-rings above and below the coil. Install E-series coils with only one O-ring above the coil. To assure proper function, coil retainer must be installed. Manual override options M and G require Coil Nut Kits. 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

The EVDR Series controllers are recommended for use with most HydraForce prop
rtional 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




PV72-33 Valve Flow Performance chart



PV72-33 Valve Dimensions



Cartridge: Weight: 0.36 kg (0.80 lb);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces; Buna N
O-rings and polyester elastomer back-ups

Standard Ported Body: Weight: 1.09 kg
(2.4 lb); Anodized high-strength 6061 T6
aluminum alloy, rated to 207 bar (3000 psi);
Ductile iron bodies available; dimensions
may differ. See page 8.012.1_3w.

70-Size D-Coil: Weight each: 0.32 kg
(0.7 lb); Unitized thermoplastic encapsulated,
Class H high temperature magnetwire.
See page 3.200.1_70-size.

70-Size E-Coil: Weight each: 0.41 kg
(0.9 lb); Fully encapsulated with rugged
external metal shell. IP69K rated.
See page 3.400.1_70-size.



PV72-33 Ordering