When talking about switches and valves, does one necessarily have to specify FC, FO, or FL?
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When mentioning switches and valves, is it necessary to specify FC, FO, or FL, or can this requirement be omitted if there is no such need? PS: Is there anyone who is familiar with the valves in the water treatment plant? Should the pneumatic valves there be single-acting or double-acting, and are requirements for FO, FC, and FL necessary? Thank you all!
From a security perspective, it must be mentioned. The general principle is to ensure production safety: the safety of the equipment ； Safety of the process and special requirements.
Is it necessary to specify whether the pneumatic valve should be single-acting or double-acting?
It should be noted that FC or FO is determined based on the specific plant or facility; in simple terms, this is to ensure that the valves are in a safe state when gas supply is interrupted
The design is primarily based on your process requirements and safety considerations; if it is necessary for the valve to remain in the open position in case of failures such as a loss of gas supply, then you can choose FO. Conversely, FC should be chosen in such cases. FL is mainly used for switch valves, and if your process requirements dictate that the valve should maintain its previous state of being open or closed in the event of such failures, then FL should be selected
Thank you to the seniors in the upper floors! I asked everywhere today, but no one knew! I finally learned this from here! Thank you so much!