Leakage rate of flue gas butterfly valves
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Currently, the standards for JB flue gas butterfly valves allow for a certain level of leakage. Are there any flue gas butterfly valves available on the market that can achieve zero leakage, especially those intended for use in high-temperature catalytic flue gas systems?
For flue damper valves, low pressure requirements mean that some leakage is acceptable; if zero leakage is required, there will definitely be a significant cost associated with that
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Reaching zero leakage comes at a cost
JB/T9692-2013 Standard for Flue Butterfly Valves