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Counterbalance Valve
Poppet Type, Direct-Acting
Cartridge – 350 bar
SBVE-R1 and SBVE-R1/2
Up to 100 l/min
Up to 350 bar
HYDAC counterbalance valves are direct-
acting poppet valves with integrated
check valve which enable smooth action
in consumers if there are retracting and
extending loads. In load-holding applications, it
can be used as a hose-break valve.
To raise a load, ow is permitted from pump
port 2 to consumer port 1 via the built-in check
valve.
To hold the load, the check valve piston is
pressed against its seat by the load pressure
at port 1 and seals leakage-free (control port 3
must be released of pressure!).
To lower the load, pressure is applied to
control port 3 which controls the valve. The
load cannot therefore speed ahead because
the load ow rate is controlled at the metering
edge of the control piston according to the
consumer's inlet pressure.
An additional restriction of the load pressure is
provided in that the consumer pressure (load
pressure) at port 1 acts on a control piston
within the valve and therefore against the force
of the adjustment spring. When the spring
tension is exceeded, the control piston moves
away from the check valve piston, and this
opens the ow path from port 1 to port 2.
FEATURES
z Hardened and ground valve components to ensure minimal wear and extended
service life
z Adjustable throughout ow range
z Speed of consumer controlled in accordance with the inlet ow
z Consumer prevented from speeding ahead where there are retracting loads
z Consumer is held in position leak-free
z Consumer pressure is restricted to the relevant pre-set pressure
z Acts as a hose-break valve for safety purposes if there is a break in the control
line, consumer supply line or drain line
z All exposed surfaces can be zinc-plated as an option (version 04) for better
protection from corrosion
FUNCTION
SPECIFICATIONS
Operating pressure: max. 350 bar
Setting pressure: max. 420 bar
Nominal ow: max. 100 l/min (30 l/min for SBVE-R1/2)
Cracking pressure: 1 bar (from port 2 to port 1)
Leakage: Leakage-free
(max. 5 drops ≙ 0,25 cm³/min at 350 bar)
Control volume: SBVE-R1/2 0.05 cm³
SBVE-R1 0.20 cm³
Pilot ratio:
j =
A1
A2
SBVE-R1/2-01X j = 4.6
SBVE-R1/2-11X j = 7.5
SBVE-R1/2-18X j = 3.3
SBVE-R1-01X j = 4.8
Media operating temperature range: min. -20 °C to max. +120 °C
Ambient temperature range: min. -20 °C to max. +120 °C
Operating uid: Hydraulic oil to DIN 51524 Part 1 and 2
Viscosity range: min. 2.8 mm²/s to max. 380 mm²/s
Filtration: Class 21/19/16 according to ISO 4406 or
cleaner
MTTF
d
:
150 years (see "Conditions and instructions
for valves" in brochure 5.300)
Installation: No orientation restrictions
Material: Valve body: free-cutting steel
Piston: hardened and
ground steel
Seals: FKM (standard)
NBR (optional, media
temperature range
-30 °C to +100 °C)
Back-up rings: PTFE
Cavity: 08021 and 16021
Weight: SBVE-R1/2 0.20 kg
SBVE-R1 0.77 kg
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MODEL CODE
SBVE – R1/2 – 01 X – 200 V
Designation
Counterbalance valve
Size
R1/2 and R1
Type
01 = standard pilot ratio j 4.6 (R1/2) and 4.8 (R1),
phosphated
11 = pilot ratio j 7.5 for (R1/2), phosphated
18 = pilot ratio j 3.3 for (R1/2), zinc-plated
Series
(determined by manufacturer)
Setting pressure
No details = valve not pre-set
200 = pre-set to 200 bar by manufacturer (optional)
Other settings on request
Type of adjustment
V = Allen head
Other types of adjustment on request
Standard models
Model code Part No.
SBVE-R1-01X-XXXV 710101
SBVE-R1/2-01X-XXXV 710100
Other models on request
Standard in-line bodies
Code Part No. Material Ports Pressure
R08021-01X-01 275033 Steel, zinc-plated G3/8, G1/4 420 bar
R08021-10X-01 283841 Steel, zinc-plated G3/8, G1/4 420 bar
R16021-01X-01 277051 Steel, zinc-plated G1 420 bar
Other line bodies on request
Seal kits
Code Part No.
Seal kit SBVE-R1/2-1...FKM 715787
Seal kit SBVE-R1-0...FKM 715878
Setting pressure Pe: The adjustment spring must be set to a
value at least 1.2 times higher than the
load pressure (Pe > P1 x 1.2)
P1 = load pressure (max. pressure
required to move the load)
max. 350 bar
Pe = setting pressure (max. 420 bar)
Control pressure Pctrl: Control pressure across port 3 required
to cancel the shut-off function of the
valve (ow from 1 to 2)
P2 = pressure across port 2
Pctrl=
Pe - P1
+P2
j
PERFORMANCE
CIRCUIT DIAGRAM EXAMPLE
SBVE-R1
SBVE-R 1/2
Q in l/min
Q in l/min
Dp in barDp in bar
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DIMENSIONS
Nominal size A (ISO 228) ØB C D E
max
SW1 SW2 SW3 Torque
SBVE-R1/2 G 1/2 24 4 56.5 56 4 13 24 30
+5
Nm
SBVE-R1 G 1 40 3 82 94 6 19 41 150
+10
Nm
CAVITY
SBVE-R 1/2
08021
Form tools
Tool Part No.
Countersink 170031
Reamer 169962
Tap 1002667
Plug gauge 169939
Millimeter
Subject to technical modications
tting depth
tting depth
Millimeter
Subject to technical modications
SBVE-R1
16021
Form tools
Tool Part No.
Countersink 170035
Reamer 169965
Tap 1002661
Plug gauge 174879
tting depth
tting depth
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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