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Hose Burst Valve
Direct-Acting
Flat Seat Valve,
Cartridge – 350 bar
RBE 1/4 to 3/4
FEATURES
z Hose burst valves for direct installation in cylinders, lines and control blocks
z Highly reliable thanks to fast response
z Unauthorized adjustment not possible once installed
z Choice of four sizes for optimum adaptability to the system
z Different ow rate settings available as an option
SPECIFICATIONS
Operating pressure: max. 350 bar
Nominal ow: RBE1/4 up to max. 25 l/min
RBE3/8 up to max. 50 l/min
RBE1/2 up to max. 75 l/min
RBE3/4 up to max. 150 l/min
Media operating temperature range: min. -20 °C to max. +100 °C
Ambient temperature range: min. -20 °C to max. +100 °C
Operating uid: Hydraulic oil to DIN 51524 Part 1 and 2
Viscosity range: min. 2.8 mm²/s to max. 800 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, preferably
horizontal
Materials: Valve body: steel
Weight: RBE1/4 = 0.009 kg
RBE3/8 = 0.016 kg
RBE1/2 = 0.031 kg
RBE3/4 = 0.057 kg
The hose burst valve RBE is a ow
operated at seat valve which prevents
uncontrolled movement in the consumer in
the event of a hose burst. The hose burst
valve is open in the normal position and
allows ow in both directions. If the pre-set
actuating ow rate is exceeded as a result
of a hose burst, for example, the valve
quickly closes and blocks the ow from
port 1 to port 2.
Caution:
The actuating ow rate should be at least
20% higher than the highest ow rate in the
system, to prevent the valve reacting too
sensitively! Due to the effects of acceleration
and inertia, the valve should be replaced
after a hose burst.
Up to 150 l/min
Up to 350 bar
FUNCTION
Closing
element
Consumer
being protected
Valve seat
Spring
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MODEL CODE
RBE – R 1/2 – X – 75
Basic model
Hose burst valve
Size of connection
R 1/4 = RBE R1/4
R 3/8 = RBE R3/8
R 1/2 = RBE R1/2
R 3/4 = RBE R3/4
Series
(determined by manufacturer)
Actuating ow rate
3 – 25 l/min = RBE R1/4
6 – 50 l/min = RBE R3/8
12 – 75 l/min = RBE R1/2
25 – 150 l/min = RBE R3/4
Setting value = max. ow rate
Other pre-set ow rates on request
PERFORMANCE
Pressure drops, dependent on ow rate at various setting
values, measured at ν = 34 mm²/s and T
oil
= 46 °C
RBE–R1/4
RBE–R3/8
RBE–R1/2
RBE–R3/4
Standard models
Model code Part No.
RBE-R1/4-X-25 710025
RBE-R3/8-X-50 710026
RBE-R1/2-X-75 710028
RBE-R3/4-X-150 710029
Other models on request
Standard in-line bodies
Code Part No. Material Ports Pressure
Ports: 1x female thread, 1x male thread
XB05520-01X 393215 Steel G1/4 350 bar
XB08520-01X 393217 Steel G3/8 350 bar
XB10520-01X 393219 Steel G1/2 350 bar
XB12520-01X 395061 Steel G3/4 350 bar
Ports: 2x female thread:
XX05520-01X 393224 Steel G1/4 350 bar
XX08520-01X 393226 Steel G3/8 350 bar
XX10520-01X 393228 Steel G1/2 350 bar
XX12520-01X 395063 Steel G3/4 350 bar
Q [l/min]
Q [l/min]
Q [l/min]
Q [l/min]
∆p [bar]∆p [bar]∆p [bar]∆p [bar]
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DIMENSIONS
Form tools
Tool Part No. / Cavity
05520 08520 10520 12520
Tap 1002670 1002668 1002667 1002663
Assembly tool 161421 160561 160560 164180
Cartridge
Cavity
Assembly tool
Type D A B C ∅ d SW ∅ Dw ∅ dw
RBE R1/4–X–... R1/4” 21 11.5 3.5 9.5 5 8 2.5/5
RBE R3/8–X–... R3/8” 23.5 13.5 5 12 5.5 10 3.5/6
RBE R1/2–X–... R1/2” 30.5 17 5.5 14 7 12 4.5/8
RBE R3/4–X–... R3/4” 38 23.5 6.5 18 7 16 6.5/9
Type D E t1 ±1 t2
min.
RBE R1/4–X–... R1/4” 20.5 33 38
RBE R3/8–X–... R3/8” 22.5 35 44
RBE R1/2–X–... R1/2” 27 44 53
RBE R3/4–X–... R3/4” 27.5 51 61
The installation dimensions (in mm) shown in the tables are minimum values for
threaded pipe connections and male adapters to DIN 3852.
Type Damax. Dw Di Ds L1min. L2max.
RBE R1/4–X–... 11.5 8 5.8 2 9 5
RBE R3/8–X–... 15 10 6.5 3 9 6
RBE R1/2–X–... 18 12 8.2 3.5 11 8
RBE R3/4–X–... 24 16 8.5 6 12 8
All dimensions in mm.
Note
The valves are set to the max. actuating ow rate as standard
and can be adjusted by the user. Equally, valves with xed
settings are also available. The valve is set according to the
setting curves by varying the gap "h" (see diagrams).
Setting curves
measured at ν = 34 mm²/s
To change the setting, loosen the lock nut, measure the gap
using setting gauges, or similar, and then re-tighten lock nut.
Q [l/min]
adjustment nut
setting gauge
setting dimension "h"
lock nut
setting dimension "h"
in mm
Millimeter
Subject to technical modications
Millimeter
Subject to technical modications
RBE-R1/4 and 3/8:
Torque 0.8 Nm
RBE-R1/2 and 3/4:
Torque 1.8 nM
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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.
