53
Pressure control valves
D2WWEI01E
RD08TX type
pressure reducing valves - 3 way
• Direct acting with relieving
• Spool type
• Control with proportional solenoid
• System of purging of air
• Applications for high flow rates (max. 210 bar - 3050 psi)
• The backpressure values on line 3 must be added to valve nominal setting
1
23
Technical specifications and diagrams are measured with mineral oil of 46 cSt viscosity at 40°C (104°F) temperature.
Nominal flow
12 l/min
(3.17 US gpm)
Max. pressure
Port 2 = 210 bar
(3050 psi)
Port 3 = 30 bar (435 psi)
Oil leakage -
Fluid mineral based or sinthetic hydraulic fluid with lubricating properties
Viscosity 12-200 cSt
Max level of contamination 18/16/13 ISO4406
Fluid temperature
with NBR seals+Polyurethane
with FPM seals
from -25°C
(-13°F) to 90°C (194°F)
from -20°C (-4°F) to 110°C (230°F)
Environmental temp. for
working conditions
from -20°C
(-4°F) to 60°C (140°F)
Cavity SAE 08/3
Coil type* BH
Nominal voltages 12 VDC - 24 VDC
Max. control current 12 V -> 1.7 A - 24 V -> 0.85 A
Dither frequency 150-200 Hz
Wei g h t
0.350 kg
(0.77 lb)
NOTE - For different conditions, please contact Walvoil Sales Dpt. - *For coils further features see from page 201.
1
2 3
24 28
41
1.61
100
3.94
30 Nm
22 lbft
5 Nm
3.7 lbft
54
D2WWEI01E
Pressure control valves
RD08TX type
Ordering codes and description composition
1 Cartridges
TYPE CODE DESCRIPTION
RD08TX/001B 0RD08002041 Pressure range 1
RD08TX/002B 0RD08002042 Pressure range 2
2 Pressure range
TYPE DESCRIPTION
1 Pressure range 0÷45 bar
(0÷652.5 psi);
2 Pressure range 0÷35 bar
(0÷507.5 psi);
3 Seals
TYPE DESCRIPTION
B NBR (Buna)+Polyurethane o-ring seals, std configuration
V FPM (Viton) o-ring seals, contact Sales Dept
4 Coils
TYPE CODE DESCRIPTION
BH 24VDC 4SLD002400A 24VDC-ISO4400 coil
For complete coils list see from page 201
5 Valve body
TYPE CODE DESCRIPTION
SAE08/3-G 3/8 3CC0830C11 Aluminium body for cavity 08 valve,
G 3/8 std thread
Note: aluminium body can stand up to 210 bar
(3050 psi)
For steel bodies or different threading see from page 210
6 Connector
TYPE CODE DESCRIPTION
ISO4400 4CN1009995B Connector
For complete connectors list see from page 201
RD08TX/002B
1
2 3
6
4
5
3
2
1
Pressure reducing valves - 3 way
55
D2WWEI01E
Pressure control valves
RD08TX type
Rating diagrams
Pressure range 1
Reduced Pressure vs Control Current
Pressure range 1
reducing/relieving pressure vs Flow rate
Pressure range 2
Reduced Pressure vs Control Current
Pressure range 2
reducing/relieving pressure vs Flow rate
Pressure reducing valves - 3 way
Pressure drop
0RD08002043 - /201B
0 3 6 9 12 15
0
8
4
12
16
(l/min)
(bar)
20
Dp 1->3
Dp 2->1
Pressure
Flow
(psi)
0
0 1 (Us gpm)
100
50
200
250
150
2 3
0
0
20
40
(A)
(bar)
80
60
Pressure
Current
0.2 0.4 0.6 0.8 1
(psi)
0
300
600
900
100% max. control current
80% max. control current
60% max. control current
12 9 6 3 0 3 6 9 12
0
100
120
140
80
60
20
40
(l/min)
(bar)
Pressure
Flow
0 11 22 33
(psi)
0
(Us gpm)
500
1000
1500
2000
0RD08002043 - /201B
0 3 6 9 12 15
0
8
4
12
16
(l/min)
(bar)
20
Dp 1->3
Dp 2->1
Pressure
Flow
(psi)
0
0 1 (Us gpm)
100
50
200
250
150
2 3
0
0
20
40
(A)
(bar)
80
60
Pressure
Current
0.2 0.4 0.6 0.8 1
(psi)
0
300
600
900
100% max. control current
80% max. control current
60% max. control current
12 9 6 3 0 3 6 9 12
0
100
120
140
80
60
20
40
(l/min)
(bar)
Pressure
Flow
0 11 22 33
(psi)
0
(Us gpm)
500
1000
1500
2000
0RD08002043 - /201B
0 3 6 9 12 15
0
8
4
12
16
(l/min)
(bar)
20
Dp 1->3
Dp 2->1
Pressure
Flow
(psi)
0
0 1 (Us gpm)
100
50
200
250
150
2 3
0
0
20
40
(A)
(bar)
80
60
Pressure
Current
0.2 0.4 0.6 0.8 1
(psi)
0
300
600
900
100% max. control current
80% max. control current
60% max. control current
12 9 6 3 0 3 6 9 12
0
100
120
140
80
60
20
40
(l/min)
(bar)
Pressure
Flow
0 11 22 33
(psi)
0
(Us gpm)
500
1000
1500
2000
0RD08002042 - /002B
0 3 6 9 12 15
0
8
4
12
16
(l/min)
(bar)
20
Dp 1->3
Dp 2->1
Pressure
Flow
(psi)
0
0 1 (Us gpm)
100
50
200
250
150
2 3
0
0
20
40
(A)
(bar)
80
60
Pressure
Current
0.2 0.4 0.6 0.8 1
(psi)
0
300
600
900
100% max. control current
80% max. control current
60% max. control current
12 9 6 3 0 3 6 9 12
0
100
120
140
80
60
20
40
(l/min)
(bar)
Pressure
Flow
0 11 22 33
(psi)
0
(Us gpm)
500
1000
1500
2000
0RD08002042 - /002B
0 3 6 9 12 15
0
8
4
12
16
(l/min)
(bar)
20
Dp 1->3
Dp 2->1
Pressure
Flow
(psi)
0
0 1 (Us gpm)
100
50
200
250
150
2 3
0
0
20
40
(A)
(bar)
80
60
Pressure
Current
0.2 0.4 0.6 0.8 1
(psi)
0
300
600
900
100% max. control current
80% max. control current
60% max. control current
12 9 6 3 0 3 6 9 12
0
100
120
140
80
60
20
40
(l/min)
(bar)
Pressure
Flow
0 11 22 33
(psi)
0
(Us gpm)
500
1000
1500
2000
