Electro-Proportional Valves — Flow Control

PV72-31 — Spool-Type, 3-Port, Normally Open
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PV72-31 Valve

SYMBOL:
PV72-31 Valve symbol
DESCRIPTION
A solenoid operated, three-port, pressure-compensated, spool-type, normally open when
de-energized, proportional priority flow control valve.

OPERATION
The PV72-31 provides priority regulated flow at port 3 with pressure compensated regulated and
bypass flow. The regulated flow is inversely proportional to electric current applied to the
solenoid. Priority flow will decrease with increasing current applied to the solenoid.

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.

FEATURES
• Choice of two regulated flow ranges.
• Excellent linearity and hysteresis characteristics.
• Hardened spool and cage for long life.
• Optional coil voltages and terminations.
• Efficient wet-armature construction.
• Cartridges are voltage-interchangeable.
• Unitized, molded coil design.
• Coil waterproofing standard.
• Manual Override option.

RATINGS
Operating Pressure: 240 bar (3500 psi)
Proof Pressure: 345 bar (5000 psi)
Burst Pressure: 896 bar (13000 psi)
Flow Rating: 0-53 lpm (0-14 gpm) for "A" flow range; 0-37.9 lpm (0-10 gpm)
   for "B" flow range.
Internal Leakage: 0.38 lpm (0.1 gpm) fully closed at 207 bar (3000 psi)
Temperature: -40° to 100°C (-40° to 212°F) with Buna seals;
   -26° to 204°C (-15° to 400°F) with fluorocarbon seals
   -54 to 107°C (-65 to 225°F) with polyurethane seals
Electrical Parameters: (with size 70 E-series and D-series coils)
COIL VOLTAGE RATING (VDC) VALVE INDUCTANCE (Mh)
THRESHOLD
CURRENT (mA)
MAXIMUM CONTROL
CURRENT (mA)
E-Coil D-Coil
12 240 200 150 ± 100 1350 ± 150
24 700 600 75 ± 50 675 ± 75
Hysteresis: ± 1.9 lpm (0.50 gpm)
Dither/PWM Frequency Range: 100 to 250 Hz
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

RECOMMENDED ELECTRONIC CONTROLLERS
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



 

 

PERFORMANCE:

PV72-31 Valve Flow chart

 

DIMENSIONS:

PV72-31 Valve Dimensions

 

MATERIALS:

Cartridge: Weight: 0.42 kg. (0.93 lbs.)
With Option M: 0.47 kg. (1.03 lb.)
With Option G: 0.56 kg (1.23 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 high-strength
aluminum alloy, rated to 207 bar (3000 psi).
Ductile iron bodies available; dimensions
may differ. See page
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.
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.
See page 3.400.1_70-size.

 

ORDERING CHART:

PV72-31 Ordering