A pneumatic solenoid valve, also known as a directional control valve, pneumatic switch valve, or compressed air valve, is crucial for controlling the flow of compressed air in pneumatic systems. These valves are used in automation and control applications to actuate tools, cylinders, and larger industrial valves. RS offers diverse configurations, including various pressure ranges, port sizes, thread sizes, body materials, and mounting types to suit all industrial automation needs.
Available in multiple configurations, our valves cater to specific requirements with options for different thread sizes, actuation types, connection port thread types, and solenoid voltages such as 12 Vdc, 24 Vac, and up to 240 Vac, ensuring compatibility across various industrial applications. For more information, please refer to our comprehensive guide to solenoid valves.
Pneumatic solenoid valves can be categorised based on their mode of operation: solenoid-operated and air-pilot-operated.
Solenoid-operated valves have an electrical coil attached to the valve. A small electrical current sends a signal to the internal spool or poppet mechanism, which opens or closes the valve. Common coil control voltages include 12 Vdc, 24 Vac, 24 Vdc, 120 Vac, and 240 Vac.
Air-pilot-operated valves require an external air source for activation. Rather than an electrical signal, these valves employ air pressure applied to a piston or diaphragm to control their operation. This pressure can be managed via an electrical solenoid positioned elsewhere or through an integrated smaller solenoid that is internally air-piloted.
Solenoid valves can be mounted on a DIN rail or a manifold. A manifold is a mounting block that allows two or more valves to be mounted in a centralised location. Manifolds can be a single block or modular for easy maintenance.
Pneumatic solenoid valves adhere to a standard numbering system, which reflects their design. This system uses two numbers; the first indicates the number of ports, and the second shows the number of operating states. For instance, 2-way and 3-way valves are common, with options like normally open (N/O) or normally closed (N/C). A 2/2 valve has two ports (in/out) and two states (open/closed), while a 3/2 valve features three ports and two states. Pneumatic solenoid valves typically have two, three or five ports.
The life expectancy of a pneumatic solenoid valve can vary significantly based on factors such as usage, environmental conditions, and maintenance practices. Typically, these valves are designed to withstand anywhere from 10 million to over 50 million cycles, depending on the valve's quality and the operating conditions.
Pneumatic solenoid valves are versatile tools used extensively across various industries due to their reliability and efficiency in controlling airflow and other gases. These valves are fundamental in automation systems where precise control of fluid power is required.
RS is committed to providing quick and dependable delivery throughout Australia, ensuring that your requirements for pneumatic solenoid valves and other related components like pneumatic fittings and compressor hoses are fulfilled. Whether you need them from industry-leading brands like RS PRO, SMC, Festo, Parker, or Norgren, our delivery services are designed to meet your needs. To learn more about our delivery services and applicable charges, please refer to our Delivery Information page.