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Pressure Compensated
Flow Control Valve
Direct Acting
Cartridge – 350 bar
SR5E
Up to 20 l/min
Up to 350 bar
The SR5E is a pressure-compensated ow
control valve which maintains a constant
outlet ow by means of a control function.
The ow rate is largely independent of the
pressure.
The valve has a xed orice with pressure
compensator spool. The measuring orice
determines the setting range for the
ow rate which can be adjusted over a
certain range. If oil is owing from 1 to 2,
a pressure drop occurs at the measuring
orice. The pressure compensator moves
into the control position which corresponds
to the force equilibrium. This is created
by the pressure drop acting on the control
piston area overcoming the spring force.
As the ow rate increases (greater
pressure drop), the diameter of the control
orice is reduced until the forces are equal
again. A constant ow rate is therefore
achieved. In the reverse direction there is
free ow through the valve. Caution: if the
required control pressure differential is not
reached, the valve operates as a non-
compensated control valve.
General
z For regulating the speed of loads independently of the pressure
z For limiting the max. speed of lifting gear (in compliance with accident prevention
regulations)
z For limiting the ow rate for control oil circuits in the main circuit or ofine
z All valve parts made of high-strength steel with hardened and ground components
to ensure minimal wear and extended service life
z Optional zinc-plated version available
Function
SPeciFicationS
Operating pressure: max. 350 bar
Nominal ow: max. 20 l/min
Media operating temperature range: min. -30 °C to max. +100 °C
Ambient temperature range: min. -30 °C to max. +100 °C
Fluid: Hydraulic oil to DIN 51524 Part 1 + 2
Viscosity range: min. 2.8 mm²/s to max. 800 mm²/s
Filtration: Class 21/19/16 to ISO 4406
or cleaner
MTTF
d
: 150 years
Installation: No orientation restrictions,
preferably horizontal
Materials: Valve body: Steel
Piston: Hardened and ground
steel
Seals: NBR (standard)
FKM (optional,
temperature range
to -20 °C)
Support rings: PTFE
Cavity: 06020
Weight: 0.07 kg
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Model code
SR5E – 01 – X / – 2.5 – 2.8
Basic model
Pressure compensated ow control valve,
metric
Type
01 = standard (phosphated, seals FKM)
Series
(determined by manufacturer)
Flow rate code
(see separate ow rate table)
Flow rate setting
no details = no setting
(but the ow rate is within the setting range)
2.8 = setting value as per customer requirements
(tolerance ± 10 %)
Other settings on request
Flow rate and operating pressure ranges
Flow rate code
(VK)
Flow rate
setting range
(l/min)
Required control
pressure differential
Dp = p1 – p2 (bar)
0.5 0.5 – 0.6 10 - 15
1.0 1.0 – 1.2 10 - 18
1.6 1.6 – 2.1 10 - 18
2.5 2.5 – 3.2 10 - 18
4.0 3.6 – 4.8 10 - 18
6.5 6.5 – 7.8 10 - 18
10 10.0 – 12.5 12 - 20
16 16.0 – 20.0 12 – 20
- at a lower differential pressure the valve operates as a
non-compensated ow control valve
- different settings are available as an option
(standard manufacturer's setting at Dp = 100 bar)
Standard models
Model code Part No.
SR5E-01X/0.3 Q=0.3-0.4 710335
SR5E-01X/0.5 Q=0.5-0.6 710321
SR5E-01X/0.7 Q=0.7-0.9 710347
SR5E-01X/1 Q=1.0-1.2 710337
SR5E-01X/1.6 Q=1.6-2.1 710338
SR5E-01X/2.5 Q=2.5-3.2 710339
SR5E-01X/3.5 Q=3.5-3.9 717832
SR5E-01X/4 Q=4.0-5.2 710340
SR5E-01X/6.5 Q=6.5-7.8 710341
SR5E-01X/7.9 Q=7.9-8.9 710342
SR5E-01X/10 Q=10.0-12.5 710343
SR5E-01X/12.6 Q=12.6-15.9 710313
SR5E-01X/16 Q=16.0-20.0 710344
Other models on request
Flow rate curveS
Dp in bar
Q in l/min
Flow rate, pressure-dependent
Q-Dp curve, measured at n = 72mm²/s
and T
oil
= 30°C
Standard line bodies
Code Part No. Material Ports Pressure
R06020-01X-01 275266 Steel, zinc-plated G3/8 350 bar
R06020-10X-01 276842 Steel, zinc-plated G3/8 350 bar
Seal kits
Code Part No.
SEAL KIT 06020-NBR 3119017
SEAL KIT 06020-FKM 3262477
Q-Dp curve
Pressure differential Dp measured against ow rate Q,
measured at n = 72mm²/s
and T
oil
= 30°C
VK = Flow rate code
Dp in bar
Q in l/min
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206
diMenSionS
Millimeter
Subject to technical modications.
cavitY
06020
Int. hex.
SW 4 metric
Millimeter
Subject to technical modications.
Cartridge form tools
Tool Part No.
Countersink 170033
Reamer 1000768
Tap 1002648
Plug gauge 168840
SW 13 metric
SW 24 metric
torque 40
+5
Nm
HYDAC Fluidtechnik GmbH
Justus-von-Liebig-Str.
D-66280 Sulzbach/Saar
Tel: 0 68 97 /509-01
Fax: 0 68 97 /509-598
E-Mail: utec@hydac.com
NOTE
The information in this brochure relates to
the operating conditions and applications
described.
For applications or operating conditions
not described, please contact the relevant
technical department.
Subject to technical modications.
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