1 1/2 inch brass swing check valve for the flow of water and gas, oil and other media. Material: Made of high quality brass material, corrosion resistance, ensuring its long service life. The manual tightening structure of the disc, More convenient for open and close operation and firm seal. When the medium flows forward, under its own gravity, the valve disc automatically turns to facilitate through; When the medium backflow, the valve disc quickly closed, effectively prevent the backflow phenomenon, to maintain the stable operation of the pipeline system, widely used in various fluid transport occasion.















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