Page 1093 - Softbound_Edition_19_en

Proportional pressure relief valve
Proportional pressure relief valve

Proportional pressure relief valve
NG4-Mini
Flange- or Sandwich construction Wandfluh standard
◆ pilot or direct operated
◆ Q = 20 l/min
max
◆ p = 400 bar
max

DESCRIPTION APPLICATION
Pilot or direct operated proportional pressure relief valve in flange These valves are used in hydraulic systems where the pressure
or sandwich construction. When the operating pressure adjusted has to be changed frequently. The electrical remote control in
by means of the proportional solenoid is reached, the valve opens conjunction with process controls allows economical solutions
and connects the protected line with the drain to the tank.The back with repeatable processes. Miniature values are used where

pressure in T influences the pressure in the secured oil line. These both, reduced dimensions and weight are important.

proportional valves are very sensitively adjustable. For flange or
sandwich executions with pressure relief in port P, there is a mano-
meter connection. For the control, Wandfluh proportional ampli-
fiers are available (see register 1.13).
SYMBOL
Flange execution
B..FA04-P Note! ◆ Direct operated execution drawn
◆ All variants are also available pilot operated

A P T B

Sandwich execution Sandwich execution Sandwich execution Sandwich execution
B..SA04-P B..SA04-A B..SA04-B B..SA04-AB

A P T B A P T B A P T B A P T B

GENERAL SPECIFICATIONS ACTUATION
Designation Proportional pressure relief valve Actuation Proportional solenoid, wet pin push
Construction Pilot or direct operated type, pressure tight
Mounting Flange- or Sandwich construction
Nominal size NG4-Mini according to Wandfluh Note! Other specifications, see data sheet of the screw-in
standard cartridges
Actuation Proportional solenoid
Ambient temperature -25…+70 °C
Weight Without screw-in cartridge
1,15 kg (Flange construction)
0,96 kg (Sandwich construction P, A, B)
1,24 kg (Sandwich construction AB)
MTTFd 150 years

www.wandfluh.com Illustrations are not binding Data subject to change 1/4 Edition: 21 11 2.3-720 E
Page 1093