Electro-Proportional Valves — Flow Control

PV70-30 — Spool-Type, 3-Port, Normally Closed
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PV70-30 Valve

SYMBOL:
PV70-30 Valve symbol
DESCRIPTION
A solenoid-operated, three-port, pressure-compensated, spool-type, normally closed
when de-energized, proportional flow control regulator. It can be used as a priority-type
flow regulator with pressure-compensated, regulated and bypass flow. It can also be
used as a restrictive-type 2-way, pressure-compensated flow regulator when the bypass line
(port 2) is blocked.

OPERATION
With inlet flow at port 1, the PV70-30 will regulate flow out of port 3 regardless of system working pressure.
With an increasing current applied to the solenoid, output flow will increase.
Note: Avoid dead-heading of prioirty line by external valving to prevent blocking of
bypass line. In restrictive mode applications, bypass port 2 has to be blocked. Flow
rate out of port 3 remains proportional to current applied to the solenoid regardless of
load (pressure) applied to port 3.
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
• 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: Inlet (Port 1): 240 bar (3500 psi); Regulated (Port 3): 207 bar
   (3000 psi); Bypass (Port 2): 207 bar (3000 psi)
Proof Pressure: 345 bar (5000 psi) Proof Pressure: Burst Pressure: 896 bar (13,000 psi)
Flow Rating:
Flow Rating lpm (gpm) Range A Range B
2-Ported 3-Ported 2-Ported 3-Ported
Regulated 26.5 (7.0) 30.3 (8.0) 17.0 (4.5) 17.0 (4.5)
Nominal Input -- 37.9 (10.0) -- 18.9 (5.0)
Maximum Input -- 49.2 (13.0) -- 26.5 (7.0)
Maximum Internal Leakage: 197 cc/min. (12 cu. in./min.) at Port 2 with 207 bar (3000 psi)
   at Port 1 (Port 2 closed)
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; -54 to 107°C (-65 to 225°F) with polyurethane seals
Electrical Parameters:(Nominal values with size 70 E-series and D-series coils)
Coil Voltage Rating (VDC) Range A Treshold
Current (mA)
Range B
E-Coil D-Coil E-Coil D-Coil
12 240 200 335 1500 1350
24 700 600 165 750 675
Hysteresis: Up to 10% of maximum regulated flow (30 to 90% of flow range)
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; See 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:

PV70-30 Valve Flow chart

 

 

PV70-30 Valve Flow chart

 

DIMENSIONS:

PV70-30 Valve Dimensions

 

MATERIALS:

Cartridge: Weight: 0.32 kg (0.70 lb);
with manual override M - 0.37 kg
(0.81 lb.); with manual override G -
0.45 kg (1.00 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. (0.80 lbs.) Anodized highstrength
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.

 

ORDERING CHART:

PV70-30 Ordering