I’d like to ask the experts: what kind of valve is this?
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I would like to ask what type of valve this is If wiring is done inside the DCS cabinet, how can a 220V supply be provided to it (the voltage required to power the valve solenoid is 220V)? Is it necessary to use a relay or a contactor or something similar?
The control mechanism of a pneumatic ball valve is an electromagnetic valve; the principle by which the DCS outputs switch signals to control other electric valves is the same, right? How does the DCS control and display the start and stop of the motor? Meters and electricity are combined.
Two five-way solenoid valves, powered by 24V; there is indeed a relay in between
Pneumatically driven floating ball valve – the pipeline and ball valve in this setup seem to be of poor quality; they give a rough appearance
The first image shows a 2-position 5-way solenoid valve; it’s actually a pneumatic ball valve, and its installation is not very satisfactory
Hehe, it was a project that was stopped halfway; no specialized installation team was hired – it seems it was done by the factory’s own civil engineering crew, and then they left
The solenoid valve that controls the on/off of the air circuit is connected to the DO output terminals of the DCS relay cabinet, with a 220V voltage applied across the relay.
Pneumatic fork-type ball valve, pneumatic double-acting, equipped with a 2/5-way cartridge-mounted single-coil solenoid valve; the coil is explosion-proof, while the solenoid valve body is not explosion-proof. It also features an explosion-proof limit switch and pneumatic fittings； It is a carbon steel ball valve; no standard can be identified ；