Valves - Electro-proportional Controls - Flow Control - Pressure Compensated - Restrictive Type - Normally Closed

PV72-20

NORMALLY CLOSED PRESSURE COMPENSATED ELECTRO PROPORTIONAL FLOW REGULATOR VALVE CARTRIDGE

Overview

Description

PV72-20 is a solenoid-operated, two-port, pressure compensated, spool type, normally closed, proportional flow control valve

Operation

The valve will regulate flow out of port 2 regardless of system working pressure. With an increasing current applied to the solenoid, output flow will increase

Features

  • Choice of two regulated flow ranges
  • 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.
Pressure Ratings
Pressure rating:
  • 240 bar (3500 psi)
Proof pressure:
  • 345 bar (5000 psi)
Burst pressure:
  • 896 bar (13000 psi)
Flow Ratings
Flow rating:
  • 0 to 64.4 lpm (0 to 17.0 gpm) For "a" flow range;
  • 0 to 37.9 lpm (0 to 10.0 gpm) For "b" flow range
Maximum internal leakage:
  • 0.38 lpm (0.1 gpm) Max at 0 current
Hysteresis flow:
  • lpm (gpm)
Temperature Ratings
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
Storage temperature:
  • -40 to 70 °C (-40 to 160 °F)
Ambient temperature:
  • -40 to 70 °C (-40 to 160 °F)
Other Ratings
Corrosion protection:
  • 960 hr salt spray per ASTM b117
Fluids:
  • Mineral based or synthetic hydraulic fluid with lubricating properties
Fluid viscosity range:
  • 7.4 to 420 cSt
Maximum operating contamination level:
  • 18/16/13 per ISO 4406
Unit weight:
  • 0.40 kg (0.88 lb) Blank option
  • 0.44 kg (0.98 lb) "m" option
  • 0.55 kg (1.21 lb) "g" option
Internal wetted surface area:
  • 283 cm² (43.8 in²) Blank option
  • 348 cm² (53.9 in²) "m" option "g" option
Note:
  • With size 70 e-series and d-series coils
Maximum control current:
  • 1500 mA 12 V coil
  • 750 mA 24 V coil
Threshold current:
  • 250 mA 12 V coil
  • 125 mA 24 V coil
Valve inductance:
  • 240 mH E-coil 12 V
  • 200 mH D-coil 12 V
  • 700 mH E-coil 24 V
  • 600 mH D-coil 24 V
Dither PWM frequency:
  • 100 to 250 Hz
PV72-20_Perf_Chrt
PV72-20_Dim_Dwg

Materials

Cartridge: Weight: 0.40 kg (0.88 lb) with M option: 0.44 kg (0.98 lb) with G option: 0.55 kg (1.21 lb) Steel with hardened work surfaces. Zinc-plated exposed surfaces. Buna N O-rings and polyester elastomer back-ups standard.

Standard Ported Body: Weight: 0.59 kg (1.3 lb); Anodized high-strength aluminum alloy, rated to 207 bar (3000 psi); Ductile iron bodies available; dimensions may differ.

70-Size D-Coil: Weight each: 0.32 kg (0.7 lb); Unitized thermoplastic encapsulated, Class H high temperature magnet wire.

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.

Cavity:
Cartridge installation torque:
  • 47 N-m (35 ft-lb)
Maximum allowable torque:
  • 68 N-m (50 ft-lb)
Coil nut torque:
  • 14 to 16 N-m (10 to 12 ft-lb)
Cover cap torque:
  • 7 to 9 N-m (5 to 7 ft-lb)
Orientation restriction:
  • None
PV72-20_Order
POSITION
CODE
DESCRIPTION
PV72-20DE-H-J-L
D
Max Regulated Flow
D
A
64.4 lpm (17.0 gpm) Max Regulated Flow
D
B
37.9 lpm (10.0 gpm) Max Regulated Flow
D
BLANK
64.4 lpm (17.0 gpm) Max Regulated Flow
E
Manual Override
E
BLANK
NONE
E
G
Variable Position Override, Red Knurled Knob with Cover Cap
E
M
Variable Position Override, Red Knurled Knob
H
Line Body
H
0
No Body
H
10T
Aluminum SAE 10
H
12T
Aluminum SAE 12
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
P
Polyurethane
J
U
PPDI Urethane
L
Coil
L
0
No Coil
L
12DG
12 VDC, D-Coil, DIN 43650
L
12DL
12 VDC, D-Coil, Dual Lead Wires
L
12DL/W
12 VDC, D-Coil, Dual Lead Wires with Weatherpak
L
12DS
12 VDC, D-Coil, Dual Spade
L
12ER
12 VDC, E-Coil, Deutsch
L
12EY
12 VDC, E-Coil, Metri-Pack 150
L
24DG
24 VDC, D-Coil, DIN 43650
L
24DL
24 VDC, D-Coil, Dual Lead Wires
L
24DS
24 VDC, D-Coil, Dual Spade
L
24ER
24 VDC, E-Coil, Deutsch