96. What is the function of the main fan outlet vent valve? What are the requirements for it?

2021-12-20View Original

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96. What is the function of the main fan outlet vent valve? What are the requirements for it?

Reply #22021-12-24

Function: During the start-up and shutdown of the main fans, as well as when switching between or combining two main fans, closing or opening the exhaust valve simultaneously with the opening or closing of the outlet electric valve ensures smooth operation and helps to protect the safe functioning of the unit. It acts as an anti-rotation valve; when the main fan starts rotating uncontrollably, this valve can be opened to increase the flow rate and prevent further rotation. Opening or closing the outlet exhaust valve serves to assist in regulating the outlet flow rate. Requirements: The valve must be flexible, allowing for quick opening and closing, and it also needs to have good sealing properties.

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