Page 914 - Softbound_Edition_19_en

Pressure reducing valves

Pressure reducing valve
Flange- and sandwich construction ®
• Pilot operated NG3-Mini
• Q max = 8 l/min
• p max = 315 bar

DESCRIPTION FUNCTION APPLICATION
Flange or sandwich type pilot operated 3-way The spool, located in the pilot operated main Pressure reducing valves are used for keeping
pressure reducing valve NG3-Mini in acc- section of the valve, is held in the reset position the pressure constant in a consumer, irrespec-
ordance with Wandfluh standard. Screw-in by a spring. The connection to the consumer tive of pressure fluctuations on the supply side.
cartridge M18x1,5 in according with Wandfluh- is fully open. With the pilot stage which is If several consumers are used, the reduced
Norm. The valve reduces the inlet pressure designed as relief valve, reduced pressure is pressure can be set individually with the aid if
to a preset output pressure. The integrated adjustable. It opens when the set value is rea- one pressure control valve for each consumer.
pressure relief function prevents the reduced ched. As a result, a pilot volume flows through Generally speaking, pressure control valves
pressure from being exceeded as a result of the nozzle in the spool. The resultant pressure are used for reducing a hydraulic pressure to
external forces. Two types of setting and three difference displaces the spool towards the a lower level. The integrated pressure relief
pressure stages are available. A pressure spring. The volume flow is throttled in the valve function obviates the need for any additional
gauge con-nection is provided in the reduced inlet and the reduced pressure is controlled. If pressure relief valve in the reduced pipe. Di-
connection. With the sandwich execution in forces acting on the actuator allow the reduced rectly operated pressure reducing valves also
A, the bypass non-return valve is installed pressure to exceed the set value, the spool is keep the reduced pressure stable, even under
directly into the plate. The flange body and the displaced until the valve inlet closes and the very difficult operating conditions. Mini-3 valves
sandwich plates made of steel are painted or reduced pressure port is being connec-ted to are used where both, reduced dimensions and
zinc-nickel coated. tank. The pressure increase is then limited. weight are important.

TYPE CODE
M V A03 - - #
Pressure reducing valve
Pilot operated
Type of adjustment Kay S
Control knob D
Flange design F
Sandwich design S
Mounting interface acc. to Wandfluh standard, NG3-Mini
Type list / function Flange design Sandwich design
P → A P/A in P P
in A A
Pressure range p N red 63 bar 63
160 bar 160
350 bar 350
Design-Index (Subject to change)

GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS
Description Pilot operated pressure control valve Fluid Mineral oil, other fluid on request
Nominal size NG3-Mini according to Wandfluh standard Contamination efficiency ISO 4406:1999, class 18/16/13
Construction Flange- or sandwich (required filtration grade ß 6..10≥75)
Mounting 3 mounting holes for cyl. screws refer to data sheet 1.0-50/2
M4 or double ended screws M4 Viscosity range 12 mm /s…320 mm /s
2
2
Connection Threaded connection plates Fluid temperature -20...+70°C
Multi-flange subplates Peak pressure p max = 315 bar
Longitudinal stacking system Nominal pressure ranges p N red = 63 bar, p N red = 160 bar
Ambient temperature -20…+50°C p N red = 350 bar
Mounting position any Opening pressure
Fastening torque M = 2,8 Nm (Qual. 8.8) for fastening screws to non-return valve p = 0,8 bar
D
ö
M = 30 Nm for screw-in cartridge Volume flow Q = 0…8 l/min
D
Weight Depending on the type 0,26…0,50 kg For futher hydraulic specifications see data sheet 2.2-510

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 2.2-600E 1/2
CH-3714 Frutigen Edition 21 30