The No.3 Steel Rolling Plant Continuous Casting Plant of Masteel Group Co., Ltd. can save 2,400 tons of drainage water per day by making small changes to the pumping equipment of the pumping station. The effect of energy conservation and emission reduction is remarkable. Before the big special billet casting machine parked when the two cold water must be switched off, opened when opened. If the stop pouring interval is short, not only to improve the labor intensity of pump room workers, and often all kinds of pump equipment efflux, one hour there will be about 100 tons of water wasted, to the enterprise caused some economic losses. The plant blank billet pump equipment through the small change to small leather, replacing the drain valve, an increase of back to the valve, not only reduces the labor intensity of workers, easy to operate, but also completely eliminate the phenomenon of efflux every day can save 2400 Tons of drainage, while reducing the pump to open a lift, saving a lot of electricity.