industrial instrumentation basics

Solenoid valve A solenoid valve or SOV is an electro mechanically operated valve.  This is controlled by an electric current through a solenoid coil, a magnetic field is produced in the electrical coil which mechanically operates the plunger of the valve and hence changes the path of air or fluid from one direction to another direction. Types of solenoid valve: 2/2-way solenoid valve This type of valve has 2 ports and it acts in  2 positions.  It means the solenoid valve has two ports one is the inlet port and another port is the outlet port, material passing through the solenoid valve either pneumatic or fluid is applied to the inlet port and exhausted through the outlet port. Two-position of solenoid valve means that its piston or plunger has two-position, either valve is open or close. 3/2-way solenoid valve  This type of valve has 3 ports and 2 acting positions. 5/2 way solenoid valve  This type of valve has 5 ports and 2 positions. Types of a solenoid valv...