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Zhengyang air conditioningHOME
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Fire valve regulating valve
T303-2 rectangular check valve
Release：Zhengyang air conditioning | Time：2018/8/20 14:53:07
Installed in the ventilation duct to prevent the gas-liquid backflow after the fan stops running, it is required to use when the wind speed in the duct is not less than 8 m/s.
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