Page 1353 - Softbound_Edition_19_en

Pipe failure valve
Shuttle valves Pipe failure valves

characteriSticS Oil viscosity υ = 30 mm /s Pipe failure valve
2
∆p = f (Q) Pressure loss - volume flow - curve For installation in pipes
P1 → A and P2 → A • Q = 20 l/min NG6
p[bar] max
5 K0490 • p max = 210 bar
4
3
2 DESCRIPTION FUNCTION APPLICATION
1 Pipe failure valve NG6 for line mounting. The Fluid can pass the valve in both flow directions. Pipe failure valves are used where loads must
valve is screwed directly into the component In flow direction A to P the valve closes if the be protected against uncontrolled lowering
0 which has to be protected. Thread size for amount of flow exceeds the adjusted value. after a line rupture, for exemple in scissor lifts
0 10 20 30 40 Q [l/min] port A: male G3/8". For port P: female G1/4" Amount of flow which causes the valve to close or leveling platforms. Caution: Pipe failure
dimenSionS for type RBSG638 or female G3/8" for type (cut-off flow) can be adjusted by means of an valves are nor suitable for applications where
RBSW638. This pipe failure valve is availab- adjustment screw. The valve is set at 10 l/min pressure and flow changes rapidly under nor-
le in a straight version and in a 90° version. at the factory. Turning the adjustment screw mal working conditions.
26 G3/8" Housing and banjo bolt are zinc coated. clockwise reduces the cut-off flow.
26 G3/8"

A
A
5 TYPE CODE
17 M
5
17 M RBS 6 38 #
37,5 Pipe failure valve
37,5
55 Straight execution G
55 Angled execution W
P1 P2
P1 P2 Nominal size 6

17,5 Threaded connection G3/8"
17,5
Design-Index (subject to change)

12 35 12 G3/8" GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS
12 35 12 G3/8" Description Pipe failure valve Fluid Mineral oil, other fluid on request
application example Construction Threaded body Contamination efficiency ISO 4406:1999, class 20/18/14
A Mounting Threaded port, line mounting (Required filtration grade ß 10...25≥75)
A Connections Threaded port male G3/8" refer to data sheet 1.0-50/2
Threaded port female G1/4" (RBSG638) Viscosity range 12mm /s...320mm /s
2
2
Threaded port female G3/8" (RBSW638) Fluid temperature -20...+70 °C
P1 P2 Ambient temperature -20..+50 °C Peak pressure p = 210 bar
max
P1 P2 Mounting position any Max. volume flow P → A: Q max = 20 l/min
A Weight RBSG638 m = 0,18 kg A → P: Q max = 18 l/min
A P1 P2 RBSW638 m = 0,28 kg
P1 P2

SYMBOLS
A B simplified detailed
A B
a b A
a b P T
P T P A

P

Technical explanation see data sheet 1.0-100

s27 s27
Wandfluh AG Tel. +41 33 672 72 72 E-mail: sales@wandfluh.com Illustrations not obligatory Data sheet no. Wandfluh AG Tel. +41 33 672 72 72 E-mail: sales@wandfluh.com Illustrations not obligatory Data sheet no.
Postfach Fax +41 33 672 72 12 Internet: www.wandfluh.com Data subject to change 2.7-120E 2/2 Postfach G1/4" Fax +41 33 672 72 12 Internet: www.wandfluh.com Data subject to change 2.7-130E 1/2
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CH-3714 Frutigen Edition 03 26 0CH-3714 Frutigen Edition 03 26
P Page 1353
9 9

P G3/8"
10 30 30 10 30 Breite 30
17,5

G3/8" 17,5 max. G3/8" max.
10 A 20 A 17,5

s2,5 s2,5
s8 s8
27 25,7
44