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Pressure reducing valves Pressure reducing valves
Pressure reducing valve
2
CHARACTERISTICS oil viscosity υ = 30 mm /s Pressure reducing valve
p = f (Q) Pressure volume flow characteristics p = f (Q) Pressure volume flow characteristics Flange- and sandwich construction
red
red
(Maximal adjustable pressure) (Minimal adjustable pressure) NG10
∗ Consumption resistance dependent on system • Pilot operated ISO 4401-05
p [bar] p [bar] • Q max = 80 l/min
250 K0523 25 K0522 • p max = 400 bar
200 20 • p N red max = 350 bar
P N red = 200 bar
150 P N red = 160 bar 15
P N red = 31.5/63/125/ DESCRIPTION FUNCTION APPLICATION
100 P N red = 125 bar 10 160/200 bar Flange or sandwich type pilot operated 3-way The spool, located in the pilot operated main Pressure reducing valves are used for keeping
∗
50 P N red = 63 bar 5 pressure reducing valve. Screw-in cartridge section of the valve, is held in the reset position the pressure constant in a consumer, irrespec-
P N red = 31,5 bar M22x1,5 in according with ISO 7789. The by a spring. The connection to the consumer tive of pressure fluctuations on the supply side.
0 0 valve reduces the inlet pressure to a preset is fully open. With the pilot stage which is If several consumers are used, the reduced
30 24 18 12 6 0 6 12 18 24 30 30 24 18 12 6 0 6 12 18 24 30 output pressure. The integrated pressure relief designed as relief valve, reduced pressure is pressure can be set individually with the aid if
A T Q [l/min] P A A T Q [l/min] P A function prevents the reduced pressure from adjustable. It opens when the set value is rea- one pressure control valve for each consumer.
p = f (n) Pressure adjustment characteristics ∆p = f (Q) Pressure loss/flow characteristics being exceeded as a result of external forces. ched. As a result, a pilot volume flows through Generally speaking, pressure control valves
the nozzle in the spool. The resultant pressure
are used for reducing a hydraulic pressure to
Two types of setting and three pressure stages
red
[at Q = 0 l/min (static)] over non-return valve
are available. A pressure gauge connection is difference displaces the spool towards the a lower level. The integrated pressure relief
p [bar] p [bar] provided in the reduced connection. A bypass spring. The volume flow is throttled in the valve function obviates the need for any additional
250 K0521 10 K0524 non-return valve plate for the flange valve – for inlet and the reduced pressure is controlled. If pressure relief valve in the reduced pipe. Di-
P N red = 200 bar free flow from A to P – can be ordered sepa- forces acting on the actuator allow the reduced rectly operated pressure reducing valves also
200 8
P N red = 160 bar rately. The flange valve body is painted, the pressure to exceed the set value, the spool is keep the reduced pressure stable, even under
150 P N red = 125 bar 6 sandwich plates are phosphatised. displaced until the valve inlet closes and the very difficult operating conditions.
100 4 reduced pressure port is being connected to
tank. The pressure increase is then limited.
P N red = 63 bar
50 2
P N red = 31,5 bar
0 0 TYPE CODE
0 2 4 6 8 10 12 n [-] 0 6 12 18 24 30 Q [l/min]
M V A10 - - #
TYPES / DIMENSIONS
Flange construction Pressure reducing valve
ADRVdN6 ADRVdN6 Pilot operated
Type of adjustment Kay S
Control knob D
Flange design F
Sandwich design S
A P T B
International standard interface ISO, NG10
Sandwich construction Type list / function Flange design Sandwich design
ADRVd6 ADRVdA6 ADRVdB6 P → A P/A in P P
in A A
A P red T B A P T B A P T B ADRVd6 in B B
ADRVdA6 Pressure range p N red 63 bar 63
160 bar 160
350 bar 350
A P T B A red P T B A P T B red Design-Index (Subject to change)
PARTS LIST
Position Article Description GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS
Description Pilot operated pressure control valve Fluid Mineral oil, other fluid on request
40 153.1601 Hexagonal nut 0,5D M12 Nominal size NG10 according to ISO 4401-05 Contamination efficiency ISO 4406:1999, class 18/16/13
50 246.2117 Zyl. screw M5 x 16 DIN912 Construction Flange or Sandwich (Required filtration grade ß6…10≥75)
refer to data sheet 1.0-50/2
4 mounting holes for zyl. screws M6
Mounting
60 246.2146 Zyl. screw M5 x 45 DIN912 Spindle not secured against or double ended screws M6 Viscosity range 12 mm /s…320 mm /s
2
2
70 238.2406 Plug VSTI G1/4"-ED unscrewing Connection Threaded connection plates Fluid temperature -20…+70 °C
90 160.2093 O-Ring ID 9,25 x 1,78 Multi-flange subplates Peak pressure p max = 400 bar
100 114.1202 Knob For sandwich red. pressure Ambient temperature Longitudinal stacking system Red. nominal pressure p N red = 63 bar, p N red = 160 bar
= 350 bar
-20…+50 °C
p
in B the adjusting parts are
N red
110 154.7100 Cap nut on A-side Mounting position any Opening pressure p = 0,8 bar
ö
Fastening torque M = 9,5 Nm (qual. 8.8) for fastening screws to non-return valve
D
ACCESSORIES M = 50 Nm for screw-in cartridge Volume flow Q = 0…80 l/min
D
Threaded connection plate and multi-flange subplates Reg. 2.9 Weight Depending on the type 2,89…3,09 kg For futher hydraulic specifications see data sheet 2.2-530.
Technical explanation see data sheet 1.0-100 Bypass non-return valve ADRVP6
A P T B
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 2.2-650E 2/2 Postfach Fax +41 33 672 72 12 Internet: www.wandfluh.com Data subject to change 2.2-660E 1/2
CH-3714 Frutigen Edition 21 30 CH-3714 Frutigen Edition 05 04
A P red T B A P T B A P T B Page 927
A P T B A red P T B A P T B red
