There several different options in push button switches used to control a push button valve. The switch is the actual interface the operator of uses, while the valve is the component that either turns on or turns off the flow of the media through the system.
With the use of a pneumatic push button switch, the operation is controlled manually. Typically, these valves are normally closed, which means depressing the push button switch open the valve and allows the flow of air through the system.
The pneumatic push button switch is an on or off type of switch and valve; it is not used to regulate or control the level of the flow through the system. Most have a 90-degree body configuration with either a two or three-way exhausting or non-exhausting flow option for the design.
Options in the Valves
A pneumatic push button switch can be designed to operate in a system line and remain unmounted, or it can be designed to be mounted to the equipment. Either option can be very effective, but it is important to choose the correct design for the given application. Having the valve mounted on the equipment means the operator always knows where the valve is located, whereas if it is an in-line switch, it can easily be found by simply following the line back from the tool or device. In these cases, the switch is typically positioned close to the tool.
The tops of the valves, or the actual switch that is depressed or released to operate the valve, can range in styles from a flush-mount type of design or a mushroom design that is easier to detect and use.
In all designs, the valve and the configuration have to be carefully considered for the specific use application and equipment. The valve must also be selected to operate within the given pressure range for the system, and incorrectly matching the switch with the system can result in switch failure or inefficiency.