Soft start valve
max. 2400 Nl/min | VAP, APR series
METAL WORK
circuit gradually with controlled flow. It comes in two versions
with solenoid or pneumatic actuation.
Both control signals cause the valve to open, which allows
the air controlled by the flow regulatortofowslowlytowards
the downstream circuit. In the APR, when the pressure in
the downstream circuit reaches 50%-60% of the upstream
pressure, the valve opens the main inlet duct connecting
it directly to the output duct. This supplies the circuit with
the maximum pressure and flow rate available upstream.
The time elapsing between starting and opening the valve
can be adjusted via the built-in flow regulator.
If it is necessary to relieve the downstream circuit quickly,
merely operate the control valve which cuts off air flow in
the pipe. This closes the valve and starts relieving the
downstream circuit.
The progressive starter acts both as an actuator positioner,
which eliminates the risk of sudden kickback, and as a
safety valve that relieves the circuit quickly when the remote
control is operated.
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