Accumulator discharge valves are preferably used
in hydraulic systems where high flow rates are discharged
from hydraulic accumulators over a short
operating period (in the range of milliseconds).
Typical applications are injection molding and die casting
machines as well as hydraulic presses.
Basically the function of an accumulator discharge
valve corresponds to the function of a TDA throttle
valve. In addition passing a directional valve is integrated in the
pilot circuit to meet the relevant safety the Regulations.
The directional valve provides the safety function.
When the solenoid is deenergized and the spring is
in the end position, pilot pressure from X presses the
control piston Into Lower end position and, the main
poppet is closed. As a result the flow from B to A or
from the reservoir system to the machine is blocked.
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