Pilot Operated Pressure Relief Valves
Series R / RS*E
R-RS_E UK.INDD 14.10.22
8-33
8
Catalogue MSG11-3500/UK
Parker Hannin Corporation
The pressure relief valve series R consists of a manual
adjustment pilot stage and a cartridge main stage.
The pressure relief valve series RS consists of a manual
adjusted pilot stage with a directional valve for an electri-
cally controlled vent function and a cartridge main part.
The R/RS*E model codes embrace the pilot valves, cov-
ers and cartridges that are also oered as separate items.
See combination examples for details.
Features
• Pilot operated with manual adjustment
• Cavity and mounting pattern according to ISO 7368
• 6 pressure stages
• 2 switching types (series RS*E)
• 2 adjustment modes
- Hand knob
- Acorn nut with lead seal
• 6 sizes, NG16 to NG63
Note
Port X only usable for remote control.
Characteristics
R*E
RS*E (simplied symbol)
R25E RS25E
RS*E
A
B
XY
A
B
XY
A
R-RS_E UK.INDD 14.10.22
Pilot Operated Pressure Relief Valves
Series R / RS*E
8-34
8
Catalogue MSG11-3500/UK
Parker Hannin Corporation
Ordering Code
R
Code Nominal size
16 NG16
25 NG25
32 NG32
40 NG40
50 NG50
63 NG63
Pressure
relief
valve
Poppet
spring
Code Seal
N NBR
V FPM
S
Nominal
size
Adjust-
ment
Pilot oil
(pilot internal,
drain external)
SealSlip-in
mounting
ISO 7368
Design
series
(not required
for ordering)
Design
series
(not required
for ordering)
Pressure
stages
Spool
type
E 1
Code Spool type
omit Standard
S07
with poppet
seals
RS
Pressure
relief
valve with
elec. un-
loading
Poppet
spring
S
Nominal
size
Adjust-
ment
Pilot oil
(pilot int.,
drain ext.)
SealSlip-in
mounting
ISO 7368
Pressure
stages
Spool
type
E 1
Code Spool type
omit Standard
S07
with poppet
seals
Switching
type
Solenoid Without
plug
W
Options
Code Options
omit Standard
S
with slow
unloading
1)
To be used in combination with rectier plugs at 120 VAC / 230 VAC power supply.
Code Solenoid
K 12 V
J 24 V
U
1)
98 V
G
1)
205 V
Code Seal
N NBR
V FPM
Code Switching type
1
Solenoid not activated,
unpress. circulation
9
Solenoid activated,
unpress. circulation
R*E
RS*E
Code Pressure stages
07 up to 70 bar
10 up to 105 bar
17 up to 175 bar
21 up to 210 bar
25 up to 250 bar
35 up to 350 bar
Code Nominal size
16 NG16
25 NG25
32 NG32
40 NG40
50 NG50
63 NG63
Code Pressure stages
07 up to 70 bar
10 up to 105 bar
17 up to 175 bar
21 up to 210 bar
25 up to 250 bar
35 up to 350 bar
Code Adjustment
S Hand knob (standard)
A Acorn nut with lead seal
Code Adjustment
S Hand knob (standard)
A Acorn nut with lead seal
Pilot Operated Pressure Relief Valves
Series R / RS*E
R-RS_E UK.INDD 14.10.22
8-35
8
Catalogue MSG11-3500/UK
Parker Hannin Corporation
K J U G
12 V = 24 V = 98 V = 205 V =
±10 ±10 ±10 ±10
2.72 1.29 0.33 0.13
32.7 31 31.9 28.2
General
Nominal size NG16 NG25 NG32 NG40 NG50 NG63
Interface Slip-in mounting acc. ISO 7368
Mounting position as desired, horizontal mounting preferred
Ambient temperature [°C] -20...+60
MTTF
D
value [years] 75
Weight [kg] 2.7 5.2 6.4 9.5 15.2 24.3
Hydraulic
Max. operating pressure [bar] Ports A and X 350, ports B and Y 30
Pressure stages [bar] 75, 105, 175, 210, 250, 350
Nominal ow [l/min] 220 500 950 1400 2300 4000
Fluid Hydraulic oil according to DIN 51524
Fluid temperature [°C] -20...+70 (NBR: -25...+70)
Viscosity, permitted [cSt] /
recommended [cSt] /
[mm²/s]
[mm²/s]
20...400
30...80
Filtration ISO 4406; 18/16/13
Electrical (solenoid)
Duty ratio 100 % ED; CAUTION: coil temperature up to 150 °C possible
Protection class IP65 in accordance with EN 60529 (with correctly mounted plug-in connector)
Code
Supply voltage [V]
Tolerance supply voltage [%]
Current consumption [A]
Power consumption [W]
Solenoid connection Connector as per EN175301-803, solenoid identication as per ISO 9461
Wiring min. [mm²] 3 x 1.5 recommended
Wiring length max. [m] 50 recommended
Technical Data
R*E
General
Nominal size NG16 NG25 NG32 NG40 NG50 NG63
Interface Slip-in mounting acc. ISO 7368
Mounting position as desired, horizontal mounting preferred
Ambient temperature [°C] -20...+60
MTTF
D
value
[years]
75
Weight [kg] 2.2 3.5 4.9 8.0 13.7 22.8
Hydraulic
Max. operating pressure [bar] Ports A and X up to 350, Ports B and Y 30
Pressure stages [bar] 75, 105, 175, 210, 250, 350
Nominal ow [l/min] 220 500 950 1400 2300 4000
Fluid Hydraulic oil according to DIN 51524
Fluid temperature [°C] -20...+70 (NBR: -25...+70)
Viscosity, permitted [cSt] /
recommended [cSt] /
[mm²/s]
[mm²/s]
20...400
30...80
Filtration ISO 4406; 18/16/13
RS*E
R-RS_E UK.INDD 14.10.22
Pilot Operated Pressure Relief Valves
Series R / RS*E
8-36
8
Catalogue MSG11-3500/UK
Parker Hannin Corporation
Characteristic Curves
p/Q performance curve
1)
1)
The performance curves are measured with external drain. For internal drain the tank pressure has to be added to curve.
All characteristic curves measured with HLP46 at 50 °C.
20 40 60 80 100
Nominal flow Q [%]
50
0
100
300
150
200
250
350
450
400
Pressure p [bar]
0
Pilot Operated Pressure Relief Valves
Series R / RS*E
R-RS_E UK.INDD 14.10.22
8-37
8
Catalogue MSG11-3500/UK
Parker Hannin Corporation
Dimensions
NG Kit
ISO 4762-12.9
[Nm] NBR FPM
16 BK414 4 x M8x40 31.8 SK-R16EN SK-R16EV
25 BK391 4 x M12x50 108 SK-R25EN SK-R25EV
32 BK415 4 x M16x55 264 SK-R32EN SK-R32EV
40 BK416 4 x M20x70 517 SK-R40EN SK-R40EV
50 BK417 4 x M20x75 517 SK-R50EN SK-R50EV
63 BK418 4 x M30x100 1775 SK-R63EN SK-R63EV
Size H B L1 L2 L3 L4 d1 d2 t
NG16 40 65
2)
32.5 – 114 117 32 25 56
NG25 47 85 42.5 – 102 105 45 34 71
NG32 50 102 51 – 95 97.5 60 45 85
NG40 106 125 62.5 66.5 106 110.5 75 55 105
NG50 141 140 70 74 106 110.5 90 68 121
NG63 155 180 90 94 106 110.5 120 90 155
1)
NG40 without adaptor plate.
2)
Width 79 mm.
Dimensions R*E
NG16 - NG32
NG40 - NG63
1)
L4
L1
BH
t
Hand knob
Ød2
Ød1
YX
L3
Acorn nut
with lead seal
B
L1
L4
Adaptor
plate
1)
H
t
Ød2
Ød1
L2
YX
25
L3
Acorn nut
with lead seal
Hand knob
R-RS_E UK.INDD 14.10.22
Pilot Operated Pressure Relief Valves
Series R / RS*E
8-38
8
Catalogue MSG11-3500/UK
Parker Hannin Corporation
Dimensions
NG Kit
ISO 4762-12.9
[Nm] NBR FPM
16 BK414 4 x M8x40 31.8 SK-RS16EN SK-RS16EV
25 BK391 4 x M12x50 108 SK-RS25EN SK-RS25EV
32 BK415 4 x M16x55 264 SK-RS32EN SK-RS32EV
40 BK416 4 x M20x70 517 SK-RS40EN SK-RS40EV
50 BK417 4 x M20x75 517 SK-RS50EN SK-RS50EV
63 BK418 4 x M30x100 1775 SK-RS63EN SK-RS63EV
Size H B L1 L2 L3 L4 L5 d1 d2 t
NG16 133 65
2)
32.5 – 114 117 117 32 25 56
NG25 137 85 42.5 – 102 117 105 45 34 71
NG32 143 102 51 – 95 117 97.5 60 45 85
NG40 196 125 62.5 66.5 106 117 110.5 75 55 105
NG50 231 140 70 74 106 117 110.5 90 68 121
NG63 246 180 90 94 106 117 110.5 120 90 155
1)
NG40 without adaptor plate.
2)
Width 79 mm.
Dimensions RS*E
NG16 - NG32
NG40 - NG63
1)
P
L1 L4
BH
t
Ød2
Ød1
L2
YX
Hand knob Acorn nut
with lead seal
L5L3
P
B
L1
H
t
L4
Ød2
Ød1
L2
Adaptor
plate
1)
YX
25
L3
Hand knob Acorn nut
with lead seal
L5
L3