Electro-Proportional Valves — Flow Control

PV72-21 — Spool-Type, 2-Port, Normally Open, Restrictive
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PV72-21 Valve

PV72-21 Valve symbol
A solenoid-operated, electrically-variable, 2-port, pressure-compensated, normally
closed, proportional flow control, spool-type, screw-in hydraulic cartridge valve.

The PV72-21 will regulate flow out of port 2 regardless of system working pressure.
With an increasing current applied to the solenoid, output flow will decrease.
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.
• Efficient wet-armature construction.
• Optional coil voltages and terminations.
• Cartridges are voltage-interchangeable.
• Unitized molded coil design – waterproofing standard.
• Manual override option.

Operating Pressure: Port 1: 240 bar (3500 psi); Port 2: 207 bar (3000 psi)
Regulated Flow: 0 to 56 lpm (15 gpm)
Internal Leakage: 0.38 lpm (0.1 gpm) fully closed at 207 bar (3000 psi)
Electrical: 2 standard voltage ratings:
 Coil Voltage
Threshold Current
Max. Control Current
 12 VDC
150 ±100 mA
1350 ±150 mA
24 VDC 75 ±50 mA 675 ±75 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: No restrictions; See page 9.020.1
Cavity: VC12-2, Variation 'B'; See page 9.112.1_2w
Cavity Tool: CT12-2x-xx; See page 8.600.1
Seal Kit: SK12-2x-M; See page 8.650.1

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




PV72-21 Valve Performance graphs



PV72-21 Valve Dimensions



Cartridge: Weight: 0.32 kg (0.7 lb);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces; Buna N
O-rings and polyester elastomer back-ups

Standard Ported Body: Weight: 0.59 kg
(1.3 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_2w.

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: 0.41 kg (0.9 lb);
Perfect wound, fully encapsulated with rugged
external metal shell; Rated up to IP69K with
integral connectors. See page 3.400.1_70-size.



PV72-21 Ordering