Electro-Proportional Valves — Flow Control

PV70-33 — Spool-Type, 2-Way, Normally Closed
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PV70-33 Valve

SYMBOL:
PV70-33 Valve symbol
DESCRIPTION
A solenoid-operated, spool-type, normally closed, proportional flow control valve
designed for use with a pressure compensator to function as a proportional flow regulator.

OPERATION
The PV70-33 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.

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
• Several regulated flow ranges.
• Excellent linearity and hysteresis characteristics.
• Optional control orifice sizes.
• 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: Inlet (Port 1) 241 bar (3500 psi);
   Regulated (Port 3) 207 bar (3000 psi);
   Bypass (Port 2) 207 bar (3000 psi)
Proof Pressure: 345 bar (5000 psi)
Burst Pressure: (896 bar (13,000 psi)
Flow Rating: Range A - 0 to 45.4 lpm (0 to14 gpm)
   Range B - 0 to 37.8 lpm (0 to 10 gpm);
   Range C - 0 to 18.9 lpm (0 to 5 gpm)
Internal Leakage: 197 cc/min. (12 cu. in./min.) fully closed at 207 bar (3000 psi)
Operating Temperature: -40 to 100°C (-40 to 212°F) with standard
   Buna N seals; -26 to 204°C (-15 to 400°F) with fluorocarbon seals
Electrical: (with 70-size D-series and E-series coils)
Coil
Voltage
(VDC)

Valve
Inductance (mH)

Threshold
Current (mA)

Maximum Control
Current (mA)

E-Coil D-Coil A & B Range C Range A & B Range C Range
12 240 200 300 ±70 360 ±70 1500 ±200 1400 ±200
24 700 600 150 ±35 180 ±35 750 ±100 700 ±100
Hysteresis: ±0.9 lpm (0.25 gpm) maximum
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: VC10-3; See page 9.110.1_3w
Cavity Tool: CT10-3X-XX; page 8.600.1
Seal Kit: SK10-3X-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 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:

PV70-33 Valve Flow Performance chart

 

DIMENSIONS:

PV70-33 Valve Dimensions

 

MATERIALS:

Cartridge: Weight: 0.32 kg. (0.70 lb.)
With Option M: 0.38 kg. (0.83 lb.)
With Option G: 0.46 kg. (1.02 lb.)
Steel with hardened work surfaces. Zinc-plated exposed surfaces. Buna N O-rings and polyester
elastomer back-ups standard.

Standard Ported Body: Weight: 0.36 kg
(0.8 lb); Anodized high-strength 6061 T6
aluminum alloy, rated to 207 bar (3000 psi);
Ductile iron bodies available; dimensions
may differ. See page 8.010.1_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.

Port Plug: For SAE 6 Port: 6103006
For SAE 8 Port: 6103008; See page 8.500.1.

 

ORDERING CHART:

PV70-33 Ordering