DESCRIPTION

A pressure-compensated electrically-variable three-port ﬂ ow regulator that is a priority

(bypass) type control. This combination valve uses a PV70-33x proportional cartridge

and an EC12-40 compensator.

OPERATION

The PFR70-33x-J series will bypass all ﬂ ow when de-energized at the pressure

compensator spring value. When energized, 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.

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)

Pressure Rise: Pressure at

➀ begins to rise higher than the compensating pressure

differential when bypass ﬂ ow exceeds 41.6 lpm (11 gpm).

Internal Leakage: 410 cc/min. (25 cu. in./min.) fully closed at 207 bar (3000 psi) out

port

➁.

Electrical: 2 standard voltage ratings

2.403.1

USASI/ISO:

SYMBOLS

PERFORMANCE CURVES

24 Volt coil used; 130 Hz dither; PWM controller

37.9/10

41.4

600

LOAD bar/psi

FLOW lpm/gpm

Priority Port Flow Rate Loss Under Load

PV70-33A with EC12-40 Typical

11 bar/160 psi compensator —

6.9 bar/100 psi compensator - - -

82.8

1200

124.1

1800

165.5

2400

206.9

3000

34.1/9

30.2/8

22.7/6

15.1/4

7.5/2

26.5/7

18.9/5

11.4/3

3.8/1

PFR70-33x-J Proportional Priority Flow Regulator,

37.9/10

CURRENT amp

FLOW lpm/gpm

Flow vs. Current (207 bar/3000 psi Load)

PV70-33B with EC12-40

11 bar/160 psi spring ——

6.9 bar/100 psi spring - - - -

100 Hz Dither

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

37.9/10

CURRENT amp

FLOW lpm/gpm

Flow vs. Current (207 bar/3000 psi Load)

PV70-33C with EC12-40

11 bar/160 psi spring ——

6.9 bar/100 psi spring - - - -

100 Hz Dither

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

Priority Port Flow Delivered Out Port ➁:

37.9/10

CURRENT amp

FLOW lpm/gpm

Flow vs. Current (207 bar/3000 psi Load)

PV70-33A with EC12-40

11 bar/160 psi spring ——

6.9 bar/100 psi spring - - - -

100 Hz Dither

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

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.

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; Filtration: See page 9.010.1

For 12 volt coils, double the current (amp) values shown.

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

• Cartridges voltage interchangeable.

• Unitized, molded coil design.

• Coil waterprooﬁ ng standard.

• Screw-in manual override option.

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

Blue rectangles are links to other catalog pages.

DIMENSIONS

PFR70-33x-J

2.403.2

3-Port, Pressure Compensated

†

Ports 1 & 3: SAE 12

Port 2: SAE 10

HYDRAFORCE

.com

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: 2.72 kg.

(6 lbs.)

Seal Kit: SK10-3x-MM (PV)

SK12-4x-TMB (EC)

MATERIALS TO ORDER

Override

Option

(Blank) None

M Screw Type

Voltage

0 Less Coil

12 12 VDC

24 24 VDC

*Compensator Spring

6.9 bar (100 psi) 100

11.03 bar (160 psi) 160

PFR70-33 __ - J __ - 10/12T - __ - __ __ __ __

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

Coils with internal diode are

available. Consult factory.

Seals

Buna N (Std.) N

Fluorocarbon V

†

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.