May I ask about the location of the solenoid valve, electric valve, and any incidents?
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Are solenoid valves and electric valves, just like pneumatic valves, also equipped with different fault valve positions, such as fully closed (FC), fully open (FO), or remaining in place (FL) in the event of a power loss?
FC\FO is generally changed through air path connections, while FL uses 2/5 way
Solenoids can be configured for single-control or dual-control to achieve fault holding or positioning at a certain point. If it is a motor-driven electric valve, FL is the most common type; to reach a specific position, additional driving devices such as springs are required.
What is the maximum diameter of two-way solenoid valves that can be used in logistics pipelines?
Are you referring to a two-way valve that is directly connected to the pipeline? I have used size 50; there are also larger sizes such as DN100 and 150, but I haven’t used those.
There are two types of solenoid valves commonly used: electric solenoid valves and pneumatic solenoid valves. Electric solenoid valves are of the direct-acting type, with the magnetic force generated by the electromagnetic coil being used to lift the valve core directly； Pneumatic solenoid valves come in two types: direct-acting and pilot-operated. The direct-acting type functions in a manner similar to electric solenoid valves; when the coil is energized, it generates a magnetic force that causes the valve stem to move, thereby allowing air to flow in or out. Pneumatic solenoid valves control the power source, while electric solenoid valves control the process medium. Pneumatic solenoid valves are classified as FC, FO, and FL. In fact, both FO and FC can be used as types of valves; the difference lies in their exhaust ports. FO allows exhaust to flow when powered, and intake to flow when unpowered, while FC does the opposite. As for FL, it can be configured with dual power control, meaning it has two coils—one for opening and one for closing
There are many types of solenoid valves, and it is best to discuss them in a targeted manner. Such as damage to the diaphragm in diaphragm-type control, or jamming caused by dust inside the slide valve. The most troublesome issue with electric valves is mechanical failure caused by overload. For reference.
What I’m referring to are two-position two-way solenoid on/off valves or two-way control valves that directly regulate the process medium; the valve body can be a ball valve, gate valve, or stop valve, with an electromagnetic actuator – not an electric valve.
So, does the \"electromagnetic valve\" you mentioned come in FC, FO, or FL variants? I’m referring to electromagnetic valves that directly control the process medium, rather than those that are accessories to pneumatic valves
Yes, the spool of this type of valve directly controls the process medium. In fact, direct-acting solenoid valves are also used to control air circuits. For the solenoid valves commonly used in air circuits, their spools are used to switch the air flow: when the valve is open, air flows into the cylinder while the connection between the cylinder and the exhaust is blocked; when the valve is closed, air flows from the cylinder to the exhaust while the connection to the intake is blocked
Oh, I’m sorry; I misread the question. This depends on the requirements of the manufacturing process, requiring different settings. For reference.