Pilot Operated Sequence Valve
Series R4S
4-85
R4S UK.INDD RH 06.09.2011
Catalogue HY11-3500/UK
Parker Hannifin Corporation
Hydraulics Group
4
Characteristics / Technical Data
Subplate mounted sequence valves series R4S enable
a hydraulic system to operate in a pressure sequence.
When the system pressure reaches the setting pressure
the valve opens and permits flow to the secondary sub-
system.
Features
• Pilot operated sequence valve
• Subplate mounting acc. to ISO 5781
• 3 pressure stages
• 3 adjustment modes
- hand knob
- acorn nut with lead seal
- Key knob
Technical data R4S
General
Nominal size 10 25 32
Interface Subplate mounting acc. ISO 5781
Mounting position as desired, horizontal mounting prefered
Ambient temperature [°C] -20...+80
MTTF
D
value [years] 75
Weight Series R4S [kg] 2.7 4.5 6.0
Hydraulic
Max. operating pressure [bar] Ports A, B and X 350, port Y depressurized
Pressure stages [bar] 105, 210, 350
Nominal flow [l/min] 150 350 650
Fluid Hydraulic oil according to DIN 51524 ... 51525
Viscosity, recommended [cSt] /
permitted [cSt] /
[mm²/s]
[mm²/s]
30 ... 50
20 ... 380
Fluid temperature [°C] -20 ... +70
Filtration ISO 4406 (1999) 18/16/13 (acc. NAS 1638:7)
Pilot Operated Sequence Valve
Series R4S
4-86
R4S UK.INDD RH 06.09.2011
Catalogue HY11-3500/UK
Parker Hannifin Corporation
Hydraulics Group
4
Ordering Code / Characteristics Curve
Typical pressure characteristics at closing point
Time and pressure underlap depend on the characteristics of the specific system.
Code Pressure stages
1 up to 105 bar
3 up to 210 bar
5 up to 350 bar
Plain
cap
Pressure
valve
External
drain
from
subplate
Design
series
SealsInterface Max.
pressure
(350 bar)
Code Interface
4
Subplate
mounting
ISO 5781
Adjust-
ment
Code Seals
1 NBR
5 FPM
Relief
function
Nominal
size
Pressure
stages
Code Nominal size
03 NG10
06 NG25
10 NG32
Code Adjustment
1
Hand knob 32mm dia.
(Standard)
3 Acorn nut with lead seal
4 key lock
R 4 S 5 3 1 A
P1 = setting pressure
P2 = operating pressure
Pilot Operated Sequence Valve
Series R4S
4-87
R4S UK.INDD RH 06.09.2011
Catalogue HY11-3500/UK
Parker Hannifin Corporation
Hydraulics Group
4
L4
H2
Ød6
Ød5
H5
H1
L6
Acorn nut with
lead seal
Hand knob
X4
X1
X5
X2
X7
Y3
Y1
Y2
X6
Ød1
X3
Y4
Ød2
d4xt4
Ød2
Ød3xt3
A
B
X
Y
L5
30
B1
B2
L2
L1
Key lock
Dimensions
NG ISO-code x1 x2 x3 x4 x5 x6 x7 y1 y2 y3 y4 y5 y6
10 5781-06-07-0-00 42.9 35.8 21.5 – 7.2 21.5 31.8 66.7 58.8 33.4 7.9 – –
25 5781-08-10-0-00 60.3 49.2 39.7 – 11.1 20.6 44.5 79.4 73 39.7 6.4 – –
32 5781-10-13-0-00 84.2 67.5 59.5 42.1 16.7 24.6 62.7 96.8 92.8 48.4 3.8 – –
Tolerance at X and Y pin holes and screw holes ±0.1, at port holes ±0.2.
NG ISO-code B1 B2 H1 H2 H3 H4 H5 H6 L1 L2 L3 L4 L5 L6
10 5781-06-07-0-00 87.3 33.35 83 21 62.5 – – – 29 94.8 – 143 181 144.8
25 5781-08-10-0-00 105 39.7 109.5 29 89 – – – 34.7 126.8 – 143 181 144.8
32 5781-10-13-0-00 120 48.4 120 29 99.5 – – – 30.6 144.3 – 143 181 144.8
NG ISO-code d1max d2max d3 t3 d4 t4 d5 d6 Subplate
1)
10 5781-06-07-0-00 15 7 7.1 8 M10 16 10.8 17 SPP 3M6B 910
25 5781-08-10-0-00 23.4 7.1 7.1 8 M10 18 10.8 17 SPP 6M8B 910
32 5781-10-13-0-00 32 7.1 7.1 8 M10 20 10.8 17 SPP 10M12B 910
1)
Details see chapter 12, series SPP
NG ISO-code Bolt kit Surface finish
NBR FPM
10 5781-06-07-0-00 BK 505 4x M10 x 35 DIN 912 12.9 63 Nm ±15% S26-58507-0 S26-58507-5
25 5781-08-10-0-00 BK 485 4x M10 x 45 DIN 912 12.9 63 Nm ±15% S26-58475-0 S26-58475-5
32 5781-10-13-0-00 BK 506 6x M10 x 45 DIN 912 12.9 63 Nm ±15% S26-58508-0 S26-58508-5
4-88
R4S UK.INDD RH 06.09.2011
Catalogue HY11-3500/UK
Parker Hannifin Corporation
Hydraulics Group
4
Notes
