“Necessity is the mother of invention”. Creation of new thoughts followed by effective steps definitely results in beneficial discoveries and this process has been in vogue continuously from the early beginning of human life. These all gradual activities and eventual consequences have upgraded the living status eradicating many older complications. Today, we are enjoying life comfortably by the help of some tiny but specialised products and one of such item is solenoid valve. Solenoid valves are electro-mechanical valves which are controlled by stopping or running an electrical current through a solenoid, with a view to change the state of the valve. A solenoid is a coil of wire that is magnetised when electricity passes through it. The solenoid valve makes use of this solenoid to activate a valve, thus controlling water flow, airflow and other things with electricity. Mainly, there are three different forms of solenoid valves available for different purposes the general-purpose ...