It can be installed directly on the wall, and the valve automatically opens when the indoor wind pressure exceeds the pressure. Is a one-way open air volume adjustment device, according to the static pressure difference to adjust the opening degree, with the position of the weight to balance the wind pressure. The air volume through the residual pressure valve is generally between 100-1200m3/h, and the pressure difference is maintained between 5-40Pa.

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  CCCF certified products

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  CMA metrological certification

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  National quality supervision, inspection and certification

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  China recognizes the joint symbol of international mutual recognition

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  China recognizes the joint symbol of international mutual recognition