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

PV72-21

NORMALLY OPEN PRESSURE COMPENSATED ELECTRO PROPORTIONAL FLOW REGULATOR VALVE CARTRIDGE

Overview

Description

PV72-21 is a solenoid operated, two-port, pressure compensated, spool type, normally open, proportional flow control valve

Operation

The valve will regulate flow out of port 2 regardless of system working pressure. The regulated flow is inversely proportional to electric current. With increasing current applied to the solenoid, output flow with decrease

Features

  • Excellent linearity and hysteresis characteristics.
  • Hardened spool and cage for long life.
  • Efficient wet-armature construction.
  • Optional coil voltages and terminations.
  • Cartridges voltage interchangeable.
  • Unitized molded coil design
  • Coil waterproofing standard
  • Manual override option

Ratings

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 57 lpm (0 to 15.0 gpm)
Maximum internal leakage
0.38 lpm (0.1 gpm) Max at 100 current
Hysteresis flow
lpm (gpm)
Temperature Ratings
Maximum 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

Operating Parameters

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

Properties

Cartridge 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

Electrical Parameters

Note
With size 70 e-series and d-series coils
Maximum control current
1350 mA 12 V coil
750 mA 24 V coil
Threshold current
150 mA 12 V coil
75 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

Performance

PV72-21_Perf_Chrt

Dimensions

PV72-20_Dim_Dwg

Materials

Materials

Cartridge: Weight: 0.32 kg (0.7 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 6061 T6 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.

Installation Specifications

Cavity
VC12-2B
Cartridge installation torque
47 N-m (35 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

Accessories

Seal kit
SK12-2X-M X = seal option

Order code

POSITION
CODE
DESCRIPTION
PV72-21E-H-J-L
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
PV72-21_Order