Solenoid Control Valve is an on-off control valve that either opens or closes upon receiving an electrical signal to the solenoid pilot control.This valve consists of a main valve and a two-way solenoid valve that alternately applies pressure to or relieves pressure from the diaphragm chamber of the main valve.It is furnished either normally open(de-energized solenoid to open)or normally closed(enerqized solenoid to open).Industrial uses for the solenoid control valve are many and include accurate control of process water for batching.mixing,washing,blending or other on-off type uses.Liquid level control can be provided by using a float switch or electrode probe which sends an electrical signal to open or close the valve as needed.