Description

Two two-way solenoids operate the Model 115-3. The first connects the main valve inlet to the diaphragm chamber and, when it is open, causes the main valve to
close. The second solenoid connects the diaphragm chamber to the main valve outlet and, when it is open, allows the main valve to open. A needle valve is installed in
series with each solenoid, giving separate adjustment of the valve opening and closing speeds.
The solenoids can be supplied to give one of the following “default” modes on absence or loss of electrical
power:
-Default to closed
-Default to open
-Default in last position