This product adopts advanced technology with the shape of block mold vulcanization, the non-toxic tasteless high corrosion resistant rubber composite with high strength and low in the inner surface of the valve, the valve body and the metal medium is completely isolated, from the fundamental solution to the galvanic corrosion valve in seawater, and the requirements of city water supply water standard the. This product has the advantages of high corrosion resistance, non-toxic, tasteless, low cost, long service life and so on. The utility model can be widely used in the fields of thermal power stations, nuclear power stations, urban water supply, etc., and reaches the leading level in china.

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