4/2 solenoid valves or 4 way solenoid valves have four ports or pipe connections and one outlet to exhaust pressure from the valve. 4/2 way solenoid valves are usually used to operate double-acting cylinders and can be described as ‘change-over valves’ – the solenoid valve applies air and exhausts air to a double-acting cylinder depending on the position of the valve. In one valve position pressure is connected and applied to one cylinder port, and pressure is exhausted from the other port. In another valve position, applied pressure and exhausted pressure are reversed at the cylinder selections and therefore the function of the valve is swapped over.
There are two types of operations of 4/2 way solenoid valves available:
Single solenoid: used when automatic return of valve on electrical power failure is required
Dual solenoid: used when equipment must not change position when electrical power fails, ensuring high standard of safety for personal and equipment at all times.
Asco Numatics range of 4/2 solenoid valves are available in various sizes, pressures and voltages, with special materials and voltages available on request.
Asco Numatics 4 way solenoid valves can be one of two constructions: Direct operated solenoid valves and Pilot operated solenoid valves
For more specific information about Asco’s range of 4 way solenoid valves, please click on either the type of 4 way solenoid valve you require (i.e. direct-operated, pilot-operated) or the specific series number in the adjacent menus.
If you require a more specialist product we provide full technical support and will liaise with Asco to design and develop a solution to your application problem.
