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

PV70-30

NORMALLY CLOSED PRESSURE COMPENSATED PROPORTIONAL FLOW REGULATOR

Overview

Description

The PV70-30 is a solenoid operated, pressure compensated, spool type, normally closed, priority type proportional flow control regulator. It also CAN be used as a restrictive type, 2-way, pressure compensated proportional flow regulator (with port 2 blocked)

Operation

With inlet flow at port 1 the valve will regulate priority flow out of port 3 regardless of system working pressure with flow rate proportional to current applied to the solenoid. The excessive flow will bypass out of port 2. The bypass flow CAN be used for auxiliary function control. Note: avoid dead heading of priority 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

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.
Pressure Ratings
Pressure rating:
  • 241 bar (3500 psi) Inlet
  • 207 bar (3000 psi) Regulated (port3)
  • 207 bar (3000 psi)
Proof pressure:
  • 345 bar (5000 psi)
Burst pressure:
  • 896 bar (13000 psi)
Flow Ratings
Flow rating:
  • 26.5 lpm (7.0 gpm) Regulated, range a, 2-ported
  • 30.3 lpm (8.0 gpm) Regulated, range a, 3-ported
  • 17.0 lpm (4.5 gpm) Regulated, range b, 2-ported
  • 17.0 lpm (4.5 gpm) Regulated, range b, 3-ported
  • 37.9 lpm (10.0 gpm) Nominal input, range a, 3-ported
  • 18.9 lpm (5.0 gpm) Nominal input, range b, 3-ported
  • 49.2 lpm (13.0 gpm) Maximum input, range a, 3-ported
  • 26.5 lpm (7.0 gpm) Maximum input, range b, 3-ported
Maximum internal leakage:
  • 197 ml/min (12 in³/min) At port 3 with at port 1 (port 2 closed) 207 bar (3000 in³/min)
Hysteresis per cent:
  • % Maximum, regulated flow range of 30-90%
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:
  • 0.70 lb (0.32 kg) PV70-30X
  • 0.8 lb (0.37 kg) Pv70-30mx
  • 1.00 lb (0.45 kg) Pv70-30gx
Internal wetted surface area:
  • 202.2 cm² (31.3 in²) PV70-30X
  • 205.5 cm² (31.9 in²) Pv70-30mx and pv70-30gx
Note:
  • (nominal values with size 70 e-series and d-series coil)
Maximum control current:
  • 1500 mA Coil, flow range A 12 V
  • 1350 mA Coil, flow range b 12 V
  • 750 mA Coil, flow range A 24 V
  • 675 mA Coil, flow range b 24 V
Threshold current:
  • 335 mA Coil 12 V
  • 165 mA Coil 24 V
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
PV70-30_Perf_Chrt1 PV70-30_Perf_Chrt2
PV70-30_Dim_Dwg

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 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 each: 0.41 kg (0.9 lb); Fully encapsulated with rugged external metal shell. IP69K rated.

Cavity:
Cartridge installation torque:
  • 33 to 35 N-m (24 to 26 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
PV70-30_Order
POSITION
CODE
DESCRIPTION
PV70-30DE-H-J-L
D
Max Regulated Flow
D
A
30.3 lpm (8.0 gpm) Max Regulated Flow
D
B
17.0 lpm (4.5 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
6T
Aluminum SAE 6
H
8T
Aluminum SAE 8
H
6TD
Ductile Iron SAE 6
H
8TD
Ductile Iron SAE 8
H
3B
Aluminum BSPP 3/8" (3)
H
3BD
Ductile Iron BSPP 3/8" (3)
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