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, spool-type, normally closed, proportional flow control valve.

The PV72-33 provides regulated flow from port 3 to port 2 with input from port 1 blocked.
Regulated flow is proportional to electric current applied to solenoid. The valve is intended
for use with a pressure compensator at pressure differential not exceeding 12 bar (175 psi).

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.

• Choice of two regulated flow ranges
• 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)
Proof Pressure: 345 bar (5000 psi)
Burst Pressure: 896 bar (13000 psi)
Flow Rating: See Performance Charts.
Internal Leakage: 492 cc/min. (30 cu. in./min.) fully closed at 207 bar (3000 psi)
Electrical Parameters: (with size 70 E-series and D-series coils)
Coil Voltage Valve Inductance (mH) Threshold
Current (mA)
Max Control
Current (mA)
E-Coil D-Coil
12 240 200 300 ± 70 1500 ± 100
24 700 600 150 ± 35 750 ± 50
Dither/PWM Frequency Range: 100 to 250 Hz
Operating Fluid Temperature: -40 to 100°C (-40 to 212°F) with Buna N 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. Manual override options M and G
   require Coil Nut Kits. See part numbers below. See Cartridge Installation, page 9.020.1
   for cartridge, coil and coil retainer installation. To assure proper function, coil retainer must
   be installed.
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 for seal kit options and appropriate seals based
   on application temperature range.
Coil Nut Kits (for Manual Override Option G): 4001214; (for Manual Override Option M): 420218

The EVDR Series controllers are recommended for use with most HydraForce
proportional 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: 0.35 kg. (0.92 lbs.)
With Option M: 0.48 kg (1.05 lb.);
With Option G 0.56 kg (1.24 lb.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces. Buna
N O-rings and polyester elastomer
back-ups standard.

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

70-Size “D” Coil: Weight: 0.32 kg.
(0.7 lbs.) Unitized thermoplastic
encapsulated, Class H high
temperature magnet wire.
See page 3.200.1_70-size.

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



PV72-33 Ordering