The rocker presses the diaphragm to create a hermetic seal between the fluid and control system. Electrical energy flowing into the solenoid coil creates a magnetic field that pulls open a plug nut made of magnetic material and lets fluid flow through the pipe.Pneumatic Air Control Valve Factory Article submitted on April 26, 2012.

The alarming situation of increasing pollution in the world has led to the growth of the electric vehicle industry. bio filtration is one of the most popular process of odour control. They are made of high-durability materials that allow them to handle corrosive fluids, resulting in a valve that will work reliably over extended periods.

Rocker solenoids employ a metal rocker that swivels as the core moves up or down to open or close the solenoid. They work silently, and allow fluid to flow in both directions through the solenoid. These are also good for handling aggressive fluids, or for maintaining absolute purity in the fluid passing through.

Unlike other types of valve in which the fluid flows through the valve assembly, these allow no pollution of the fluid from valve components. They have quick response times and use either screwed or splined connections. Bellows solenoid valve is the most mechanically simple solenoid, with the control system pushing a plug straight down into the flow of fluid.