Process Engineering Division – Instrumentation and Automation Section – Daily Question – Question dated 2020-07-15
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Process Engineering Division – Instrumentation and Automation Section – Daily Question – Question from 2020-07-15: Discussion question: 178. In what applications are two-position four-way solenoid valves used?
Two-position four-way solenoid valves are used in double-acting cylinder actuators and piston actuators to enable automatic switching of air circuits, thereby controlling the opening and closing of control valves; they are widely employed in sequential control systems.
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Two-position four-way solenoid valves are used in double-acting cylinder actuators and piston actuators to enable automatic switching of air circuits, thereby controlling the opening and closing of control valves; they are widely employed in sequential control systems.
The two-position four-way solenoid valve consists of a solenoid component and a valve body component; the coil attracts the armature core, which in turn moves the slide valve to switch the air path. It has five connection ports (one air supply inlet, two outlets for the working medium, and two exhaust ports). Two-position four-way solenoid valves are used in double-acting cylinder actuators and piston actuators to enable automatic switching of air circuits, thereby controlling the opening and closing of control valves; they are widely employed in sequential control systems.
In fact, most two-way solenoid valves are used in double-acting cylinders or pistons. Such cylinders or pistons do not have return springs, so their operation relies entirely on the two-way solenoid valve to control the direction of the fluid flow.
Automatic road switching is used to control the opening and closing of control valves, and it is widely applied in sequential control systems.
Two-position four-way solenoid valves are used in double-acting cylinder actuators and piston actuators to enable automatic switching of air circuits, to control the opening and closing of control valves, and they are also utilized in sequential control systems
Double-acting cylinder valve, commonly used for fault shutdown of valves
The four-way solenoid valve is used to control the air supply to the remote reset cylinder, and for resetting the overspeed cut-off spool