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SWITCHING VALVES

Hydraulic systems are used to steer and move vehicles. The mounted functions such
as lifting and swivelling arms, supports and brakes are also operated hydraulically. They
move loads and hold them in the desired position for a long time. Switching valves control
directions of movement, tightly close lines and limit pressures and flows to manually
adjusted values.

SPOOL VALVES, FLANGE WDMF CHARACTERISTICS

Controls the oil flow and can thus, for example, determine the
direction of movement of a cylinder. The valve is screwed as a
flange onto a standardised mounting interface.

FEATURES
• Solenoid valve remotely controlled via intelligent electronics
• Direct or pilot operated
• Optionally detented, for safety in the case of power failure
• Small losses due to low leakage
• Soft switching for reduction of shocks
• Switching position monitoring
AB1 • Pressure max. 350 bar
AB2
A B A B
b
a b a • Flow max. 160 l/min
a b a b
P T P T • Nominal sizes NG3, NG4, NG6, NG10
SPOOL VALVES CARTRIDGE WDEP CHARACTERISTICS

Controls the oil flow and can thus, for example, determine
the direction of movement of a cylinder. The valve is screwed
as a cartridge into a standardised cavity in the hydraulic bloc.
FEATURES
• Solenoid actuation
• Direct or pilot operated
• Space-saving cartridge construction for block construction
BA • Pressure max. 350 bar
2 4
a b • Flow max. 160 l/min
a b
3 1 • Nominal sizes U10, M33, M42

POPPET VALVES SVSPM, SDSP CHARACTERISTICS
For tight closing functions, to hold loads in position or to
close lines tightly.

FEATURES
• Cartridge, flange and sandwich construction
• Solenoid actuation
• Direct or pilot operated
• Metallically sealing seat
• Detented or with spring reset
• Pressure max. 420 bar
2
• Flow max. 300 l/min
a b
1 • All constructions and nominal sizes

PAGE 6 | WANDFLUH MOBILE | PRODUCTS | SWITCHING VALVES