... 2" 2)Material:ABS, PE,NR 53)Usage:Cooling tower, heat exchange INTRODUCTIONDetailsNameOKD-20Silk mouth specificationsG3/4 (DN20)Float ... ball control, but it can accept more of the liquid pressure. The traditional straight sealing type general than ... corrosion resistance, wide adaptability. In the solar energy, cooling tower, environmental protection, anticorrosive, chemical industry and other areas of ...