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Are there check valves used on exhaust gas vent pipes? The one with a slight pressure difference?

2020-01-14View Original

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Are there check valves used on exhaust gas vent pipes? The one with a slight pressure difference?
Reply #22020-01-14
Generally, a water seal or flame arrester is installed
Reply #32020-01-14
These are mostly water seals or flame arresters; in addition, vacuum extraction, alkaline washing, and recycling are used depending on the properties of the material
Reply #42020-01-14
I prevent waste gas from other areas of the main pipe from flowing back into this branch pipe
Reply #52020-01-14
I prevent waste gas from other areas of the main pipe from flowing back into this branch pipe
Reply #62020-01-15
You can refer to the smoke check valve used at the junction where each household’s flue connects to the main flue in homes!
Reply #72020-01-16
Then, a check valve can be installed at the point where the branch pipe joins the main pipe; generally, a three-valve assembly is used to prevent cross-contamination between high and low pressures. Alternatively, before the branch pipe is connected to the main pipe, it is first inserted into the liquid seal and then introduced into the main pipe from within the liquid; the pressure that the liquid seal can withstand is higher than the pressure of the exhaust gas in the main pipe. If the main pipe pressure is too high, it is necessary to consider that the exhaust gas cannot flow through the branch pipes, meaning the backpressure in those branches is high.
Reply #82020-01-16
What type of check valve do you use? What pressure difference is required to activate it? Also, what does the three-valve assembly that you usually use mean? Please explain it, thank you
Reply #92020-02-01
Check valves are used to prevent backflow… In such cases, a liquid-sealed tank is recommended

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