4/2 and 4/3 directional shut-off valves, Z4WH 22

Rexroth
  • Size 25
  • Component series 5X
  • Maximum operating pressure 315 bar
  • Maximum flow 650 l/min
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general

Size 25
Weight Valve with one solenoid kg 20.8
Valve with two solenoids kg 21.1
Valve witch hydraulic actuation kg 20
Switching time adjustment kg 0.8
3-way pressure reducing valve kg 0.4
Plate for version “T” kg 0.5
Installation position any
Ambient temperature ranges (NBR seals) °C -30 … +50
Ambient temperature ranges (FKM seals) °C -20 … +50

hydraulic

Size 25
Maximum operating pressure Port P External pilot oil supply bar 315
Internal pilot oil supply (without pressure reducing valve) bar 210
Internal pilot oil supply (with pressure reducing valve) bar 315
Anschluss A bar 315
Port B bar 315
Port X bar 315
Port Y bar 315
Port T bar 315
Maximum flow l/min 650
Minimum pilot pressure bar 12
Maximum pilot pressure bar 210
Pilot volume for switching process cm³ 7.7
Hydraulic fluid 1) see table
Hydraulic fluid temperature range (NBR seals) °C -30 … +80
Hydraulic fluid temperature range (FKM seals) °C -20 … +80
Viscosity range mm²/s 2.8 … 500
Maximum admissible degree of contamination of the hydraulic fluid 2) Class 20/18/15 according to ISO 4406 (c)
1) The ignition temperature of the process and operating medium used must be over the maximum solenoid surface temperature.
2) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter.
Hydraulic fluid Classification Suitable sealing materials Standards
Mineral oil HL, HLP NBR, FKM DIN 51524
Fast bio-degradable hydraulic fluids VDMA 24568
Environmentally compatible Insoluble in water HETG NBR, FKM
HEES FKM
Soluble in water HEPG NBR, FKM
Other hydraulic fluids on request

Notices!

Actuation of the manual override is only possible up to a tank pressure of approx. 50 bar. Avoid damage to the bore of the manual override! (Special tool for the operation, separate order, material no. R900024943). When the manual override is blocked, the actuation of the solenoid must be prevented!

The simultaneous actuation of the solenoids must be prevented!

Switching times (= Contacting at the pilot control valve until start of opening of the control edge in the main valve and change in the pressure value by 5 %)

Inductive position switch type QM: electrical connection

The electric connection is realized via a 4-pole mating connector (separate order) with connection thread M12 x 1.

electrical

Connection voltage (DC voltage) V 24
Voltage tolerance (connection voltage) +30 %/-15 %
Admissible residual ripple % ≤ 10
Max. load capacity mA 400
Switching outputs

 PNP transistor outputs, load between switching outputs and GND
Pinout

 1 V 24
2, 4 Switching output mA 400
3 Earthing (GND) V 0
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