Page 8 - Energy_en

TYPICAL VALVES AND

ELECTRONICS

Valves adapted to the various applications ensure that the different requirements
such as small leakage, freely adjustable volume flows or pressures as well as seat
tight closing of control lines can be readily realised. Perfect coordination of valve and
electronics leads to simple drive solutions for precise movements and sensitive valve
actuation.

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
AB2
AB1 • Pressure max. 350 bar
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 WITH INTEGRATED ELECTRONICS CHARACTERISTICS
WDRFA06 The volume flow is controlled proportionally to the command

value signal. The valve is factory set.
FEATURES
• Linear characteristics
• High dynamics (35Hz)
• Precise reproducibility and very small hysteresis
• Direct operated

ACB-S • Integrated amplifier electronics with spool position control
A B
• Optional with controller function
a 0 b
a b • Pressure max. 350 bar
P T
• Flow max. 40 l/min
• Nominal sizes NG4, NG6

HART INTERFACE CHARACTERISTICS
Simple communications interface for valves and actuators
in the processing industry. Option for SD7.
FEATURES
• Protocol for bidirectional data transmission
• Signal transmission via 4-20 mA analog signal
• Parameterisation via HART
• Electronic Device Description (EDD) available

PAGE 6 | WANDFLUH ENERGY | PRODUCTS | OVERVIEW