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Proportional
Proportional pressure relief valve
pressure relief valves
10
20 21,5 19
22
Proportional pressure relief valve NG6 17,8
Flange and sandwich construction ISO 4401-03 T
T
• p = 400 bar ♦ 5,5 A B ∗ 45 ♦ ♦ ∗ 31 A B 21 32,5 ∗ 45
max
Ø G1/4"
18 P 17,5 22,5 P 22,5
12 40 36 68 A= 102
52 104 B= 102
AB= 140

T
♦ ♦ A B ∗
P
DESCRIPTION FUNCTION APPLICATION
Pilot and direct operated proportional pres- By adjusting the electric current to the pro- The valves have their applications in hydraulic
sure relief valves NG6. Flange and sandwich portional solenoid the operating pressure in systems in which the pressure frequently has to
construction according to ISO 4401-03 with 4 hydraulic systems is limited by reliefing the be changed. The facility for remote control and
ports. Incorporated are proportional pressure fluid from the protected lines P, A, B or A and signal processing from process control systems
relief cartridges size M22x1,5 according to ISO B to the return / tank line T. Back pressure in T enable economical solutions to problems with
7789. The flange and sandwich bodies made influences the pressure in the reliefed pressure repeatable sequences.
of steel are phosphatized. lines. This proportional pressure relief valves
are adjustable very sensitivly. To control the
valve proportional amplifiers are available from
Wandfluh (see register 1.13).
TYPE CODE
B A06 - - #
Pressure relief valve
2nd and 3rd digit position of the designation od the built-in cartridge
Flange construction F
Sandwich construction S
International standard interface ISO, NG6
Type list / Function flange construction sandwich construction
in P P in P P
in A A
in B B
in A and B AB
Nominal pressure range, nominal voltage, etc., of the built-in cartridge
Design-Index (Subject to change)

Examples: B V P F A06 – P – 20 – G24 / WD – HB4,5
B D B S A06 – A – 100 - G12 / L15
B N I S A06 – B – 200 – G24 / KD – D1
B V P S A06 – AB – 350 – G12 / ME A1 R1

TYPE LIST / FUNCTION
Flange construction: Sandwich construction:

B..FA06-P B..SA06 - P B..SA06 - A B..SA06 - B B..SA06 - AB

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 2.3-740E 1/2
CH-3714 Frutigen Edition 14 02
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