1
P
T
13
11 12
Proportional Pilot Operated
Pressure Relief Valves
SR4P2-B2
HA 5117
5/2012
Functional Description
The valve is designed for continuous regulation of
pressure in the circuit.
The valve is pilot operated using the pilot stage of
SR1P2-A2 execution.
Due to two stage pilot design the valve is able to control
high hydraulic power in circuit.
The complete valve consist of pilot stage valve
SR1P2-A2 and main stage size 7/8-14 UNF.
In the basic position (with the coil de-energized) the
port P is fully open to the tank.
Connection to the pilot stage is realized with nozzles
(5) and (6) and the spring chamber (4) is unloaded to
the tank port.
When the DC current is applied to solenoid (10) at spring
(9) increases force to the seat (8) and it continuously
closes.
Build up pressure acts on spool (3) in spring chamber
(4) against the pressure line P thus closing the P line to
the Tank port.
The valve opens when the increasing pressure on P line
reaches value set by proportional solenoid (10).
In this situation the main spool (3) shift to open the Tank
line against the spring (4).
Build up pressure P in system is proportional to the
energizing current at solenoid (10).
The minimum value of cracking pressure can be
adjusted using the screw (12), position of which is
secured with nut (11). The adjusting screw (12) can
be used as emergency control. Screw (13) is used to
air bleed the solenoid control system. To ensure self
bleeding of the valve it is recommended to install it in
a vertical position with the solenoid facing downwards.
Bleeding process is necessary for the proper function
of the valve.
Pilot stage valve SR1P2-A2 (catalogue no. HA 5122)
can be ordered separately as a built-in proportional
directly operated pressure relief valve. The main stage
of the valve can be also ordered separately – see spare
parts.
The valve body and the adjustment screw are zinc
coated.
7/8-14 UNF • pmax 350 bar (5076 PSI) • Qmax 60 L/min (15.85GPM)
Screw-in cartridge design
Pilot operated
Three pressure ranges
Pressure output proportional to DC current input
2
SR4P2-B2 / -
HA 5117
Ordering Code
Valve Dimensions Dimensions in millimeters and (inches)
Technical Data
Valve size B2
Cartridge Cavity 7/8-14UNF-2A
Maximum operating pressure at ports P bar (PSI) 350 (5076)
Maximum operating pressure at ports T*
bar (PSI) 100 (1450)
Flow range L/min (GPM) 0 ÷ 60 (0 ÷15.85)
Hydraulic fluid Hydraulic oils of power classes (HL, HLP) to DIN 51524
Fluid temperature range (FPM) °C (°F) -20 ...120 (-4 ... 248)
Ambient temperature range °C (°F) -20 ... 80 (-4 ...176)
Viscosity range mm
2
/s (SUS) 10 ... 500 (49 ... 2450)
Duty cycle % 100
Enclosure type to EN 60 529
IP67 (IP65)
Maximum valve tightening torque Nm ( lbf.ft) 50+5
Optimum dither control Hz 250
Maximum degree of fluid contamination
Class 21/18/15 according to ISO 4406
Minimum reachable pressure for Q = 5 L/min
(1.321 GPM)
bar (PSI) ~ 7 (101,5)
Valve hysteresis % < 5
Weight kg (Ib) 0,580 (1.278)
Mounting position
When possible, the valve should be mounted with
solenoid faced down.
Valve body ( data shee HA 0018) SB-B2
*Pressure in T influences p = f(I) a p = f(Q) valve performance
Solenoid Technical Data
Type of coil V 12 DC 24 DC
Limit current A 1 0,6
Resistance at 20 °C (68 °F)
Ω
6,5 20,8
Quenching diode (E2, E4, E13) BZW06-19B BZW06-33B
Pressure range
up to 120 bar (1740 PSI) 12
up to 210 bar (3046 PSI) 21
up to 350 bar (5076 PSI) 35
High performance H
Type of solenoid coil
E2 Connector EN 175301-803-A
with quenching diode
E4 Connector AMP Junior Timer with
quenching diode
E13 Connector Deutsch DT04-2P with
quenching diode
Other coils on demand see catalog HA8007.
Seals
V Viton ( FPM)
Nominal solenoid supply voltage
12 V DC 12
24 V DC 24
Mu=[50+5 Nm (37+3.38 Ib.ft)]
Mu=[30+2 Nm (22+1.47 Ib.ft)]
Mu=[4+2 Nm (2.95+1.47 Ib.ft)]
Mu=[10+1 Nm (7.37+0.73 Ib.ft)]
Proportional Pilot Operated
Pressure Relief Valves
7/8-14UNF
Seal kit (Main valve)
- see Spare Parts
1. Dualseal - PU
2. O-ring - Viton
1 2
3
HA 5117
p-I Charakteristic Measured at ν = 32 mm
2
/s (156 SUS)
p-Q Charakteristic Measured at ν = 32 mm
2
/s (156 SUS)
p = f (I), Q= 5 L/min
(1.321 GPM)
0 200 400 600 800 1000
100
150
50
300
350
200
250
3
1
2
400
0 120 240 360 480 600
(1450)
(2176)
(725)
(4351)
(5076)
(2901)
(3626)
(5801)
4
2
3
1
0 10 20 30 40 50 60
Pressure range p bar ( )[ PSI ]
Flow Q (US GPM)[L/min ]
(2.64) (5.28) (7.93) (10.57) (13.21) (15.85)
(1450.4)
(2175.5)
(725.2)
(4351.1)
(5076.3)
(2900.7)
(3625.9)
(5801.5)
100
150
50
300
350
200
250
400
Current [mA]
12V coil
24V coil
Attention:
The proportional pressure relief valve is not
mechanically protected and it does not per-
form the relief valve function.
3 Pressure range 35
2 Pressure range 21
1 Presseure range 12
4 Pressure range 35
3 Pressure range 21
2 Presseure range 12
1 Min. pressure (range 35)
Pressure p [bar(PSI)]
Coil example Solenoid Connector Type code
12 VDC Connector EN 175301-803-A with quenching diode C19B-01200E2-6,5NA
24 VDC Connector EN 175301-803-A with quenching diode C19B-02400E2-20,6NA
12 VDC Connector AMP Junior Timer with quenching diode C19B-01200E4-6,5NA
24 VDC Connector AMP Junior Timer with quenching diode C19B-02400E4-20,6NA
12 VDC Connector Deutsch DT04-2P with quenching diode C19B-01200E13-6,5NA
24 VDC Connector Deutsch DT04-2P with quenching diode C19B-02400E13-20,6NA
Note:
Example of most frequent coil types.
For complete range valve coils with technical informatik about voltage, enclosure type, terminal box please afer to coil
data sheet HA 8007.
49,4(1.945)
19
(0.748)
37
(1.457)
29(1.142)
Type of the Solenoid Coil
Type E2
4
ARGO-HYTOS s.r.o. CZ - 543 15 Vrchlabí
tel.: +420-499-403 111
e-mail: info.cz@argo-hytos.com
www.argo-hytos.com
HA 5117
Caution!
Spare Parts
Solenoid coil
Type of the coil
E2 E4 E13
Nominal voltage coil
Ordering number
12 V DC 28145600 28145800 29867600
24 V DC 27824300 27824400 29868600
Main valve
Designation Ordering number
SR6H2-B2/HV 29248100
Seal kit (Main valve)
Dimensions, quantity Ordering number
Dualseal - PU O-ring
13,47x15,87x3,1 (1pc) 19,4x2,1 (1pc) 18960500
Seal kit (Pilot valve)
Dualseal - PU O-ring
10,3 x 12,7 x 3,1 (1pc) 17,17 x 1,78 (1pc) 17014300
• The packing foil is recyclable.
• The technical information regarding the product presented in this catalogue is for descriptive purposes only. It should
not be construed in any case as a guaranteed representation of the product properties in the sense of the law.
Subject to alteration without notice !
25,3+0,4(0.99+0.016)
33,3+0,4(1.31+0.016)
min 31,4(1.24)
max 23,6(0.93)
min14(0.55)
24±0,05(0.94/0.95)
min 34(1.34)
max 1(0.04)
min 16(0.63)
(0.624/0.627)
2,5 (0.1+0.016)+0,4
7/8-14 UNF -2B
30
°
R 0,2
R 0,2
15,87
+0,05
A
3
,2
1,61
A
0,05
A
0
,0
5
A
0
,0
4
3,2
(
(
,
90° 10°
±
1,6
30 2°
±
Cavity Dimensions in millimeters and (inches)
