DESCRIPTION
A pressure-compensated electrically-variable two-port fl ow regulator that is normally
closed when de-energized. This combination valve uses a PV70-33x proportional
cartridge and an EC10-30 compensator.
OPERATION
This proportional valve/compensator package will regulate fl ow out of port ➁,
regardless of system working pressure. With an increasing current applied to the
solenoid, the PFR70-33x-E will increase output fl ow.
FEATURES
• Excellent linearity and hysteresis.
• Optional control orifi ce sizes.
• Hardened spool and cage for long life.
• Optional coil voltages and terminations.
• Effi cient wet armature construction.
RATINGS
Operating Pressure: 207 bar (3000 psi)
Internal Leakage: 410 cc/min. (25 cu. in./min.) fully closed at 207 bar (3000 psi)
out port
➁.
Electrical: 2 standard voltage ratings
2.401.1
USASI:
SYMBOLS
ISO:
PFR70-33x-E Proportional Flow Regulator, N.C.,
37.9/10
CURRENT amp
FLOW lpm/gpm
.1
34.1/9
22.7/6
18.9/5
11.4/3
3.8/1
7.5/2
15.1/4
26.5/7
30.2/8
.2 .3 .4 .5 .6 .7 .8 .9 1.0
Flow vs. Current (207 bar/3000 psi Load)
PV70-33B with EC10-30
11 bar/160 psi spring ——
5.5 bar/80 psi spring - - - -
100 Hz Dither
37.9/10
CURRENT amp
FLOW lpm/gpm
Flow vs. Current (207 bar/3000 psi Load)
PV70-33A with EC10-30
11 bar/160 psi spring ——
5.5 bar/80 psi spring - - - -
100 Hz Dither
.1
34.1/9
22.7/6
18.9/5
11.4/3
3.8/1
7.5/2
15.1/4
26.5/7
30.2/8
.2 .3 .4 .5 .6 .7 .8 .9 1.0
PERFORMANCE CURVES Regulated Flow Delivered Out Port ➁:
24 Volt coil used; 130 Hz dither; PWM controller. For 12 volt coils, double the current (amp) values shown.
Threshold
Current (mA)
A & B C
Range Range
300 ± 70 360 ± 70
150 ± 35 180 ± 35
Coil
Voltage
12 VDC
24 VDC
Max. Control
Current (mA)
A & B C
Range Range
1500 ± 200 1400 ± 200
750 ± 100 700 ± 100
Operation of 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.
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
37.9/10
FLOW lpm/gpm
34.1/9
22.7/6
18.9/5
11.4/3
3.8/1
7.5/2
15.1/4
26.5/7
30.2/8
CURRENT amp
.1 .2 .3 .4 .5 .6 .7 .8 .9 1.0
Flow vs. Current (207 bar/3000 psi Load)
PV70-33C with EC10-30
11 bar/160 psi spring ——
5.5 bar/80 psi spring - - - -
100 Hz Dither
Attention Manifold Designers:
To obtain these high fl ow capabilities
using proportional fl ow controls and
compensators, optimized cavity drillings
are required. Please consult factory.
ELECTRO-PROPORTIONAL VALVES—FLOW CONTROLS
HYDRAFORCE
.com
®
• Effi cient wet armature construction.
• Cartridges voltage interchangeable.
• Unitized, molded coil design.
• Coil waterproofi ng standard.
• Screw-in manual override option.
Blue rectangles are links to other catalog pages.
Cartridge: Steel with hardened
work surfaces. Zinc-plated
exposed surfaces.
Buna N O-rings and
back-ups standard.
Standard Ported Body:
Anodized high-strength
6061 T6 aluminum alloy,
rated to 207 bar (3000 psi).
Ductile iron bodies available;
dimensions may differ.
Consult factory.
Coil: D-Coil: See page 3.200.1
E-Coil: See page 3.400.1
Package Weight: 2.27 kg.
(5 lbs.)
Seal Kit: SK10-3x-MM (PV)
SK10-3x-TB (EC)
DIMENSIONS
MATERIALS TO ORDER
PFR70-33x-E
2.401.2
Override
Option
(Blank) None
M Screw Type
Voltage
0 Less Coil
12 12 VDC
24 24 VDC
*Compensator Spring
5.52 bar (80 psi) 80
11.03 bar (160 psi) 160
PFR70-33 __ - E __ - 8T - __ - __ __ __ __
NOTE: The normally
open PV70-35 may
not be substituted in
this manifold due
to port logic factors.
*Select Orifi ce Range and Compensator
Spring by referring to the Performance
Curves on the preceding page.
*PV Orifi ce Range
Orifi ce Range A
Orifi ce Range B
Orifi ce Range C
2-Port, Pressure Compensated
Coils with internal diode are
available. Consult factory.
Seals
Buna N (Std.) N
Fluorocarbon V
®
HYDRAFORCE
HYDRAFORCE
.com
®
Terminations D-Coil
DS Dual Spades
DG DIN 43650
DL Leadwires (2)
DL/W Leads w/Weatherpak
®
Connectors
Terminations E-Coil
IP69K Rated
ER Deutsch DT04-2P
EY Metri-Pack
®
150
Blue rectangles are links to other catalog pages.
