• Pilot-operated two-stage proportional directional valve, used to control the size and direction of the liquid flow • Threaded connection type proportional solenoid, the coil can be disassembled separately • Sub-plate mounting connection structure, connection size conforms to DIN2430 and ISO4401 standards • Spool spring alignment alignment • WRZE type with integrated proportional amplifierr • WRZ type external amplifier (order separately)
Technical Specs
GeneraL
Valve type
WRZ
WRZE
Installation
Optional,preferably horizontal
Storage temperature range
℃
-20 to +80
Ambient temperature range
℃
-20 to +70
-20 to +50
Weight
NS 10
kg
7.8
8
NS 16
kg
13.4
13.6
NS 25
kg
18.2
18.4
NS 32
kg
42.2
42.4
Hydraulic (measured with HLPAG.p=100bar : 40 ℃ ± 5 ℃)
Size
10
16
25
32
Operating pressure
Pilot valve
External pilot oil supply
bar
30 to 100 bar
Internal pilot oil supply
bar
100 to 350 with "D3" only
Main valve
bar
to 315
to 350
to 350
to 350
Return pressure
Port T (Port R) (external pilot oil drain))
bar
to 315
to 250
to 250
to 150
Port T (internal pilot oil drain)
bar
to 30
to 30
to 30
to 30
Port Y
bar
to 30
to 30
to 30
to 30
Pilot oil volume input signal 0- 100 %
cm3
1.7
4.6
10
26.5
Pilot oil flow in port X and Y with a stepped input signal 0- 100 %
3.5
5.5
7
15.9
Flow of the main valve
L/min
to 170
to 460
to 870
to 1600
Hydraulic fluid
L/min
Mineral oil (HL, HLP) to DIN 51524 Further fluids on enquiry
Hydraulic fluid temperature range
℃
-20 to +80(preferably +40 to +50)
Viscosity range
mm2/s
20 to 380(preferably 30 to 46)
Degree of contamination
Maximum permissible degree of contamination of the pressure fluid is to NAS 1638 or ISO 4406(c)
A filter with a minimum retention rate of βx ≥ 75 is recommended