| 摘要 |
PROBLEM TO BE SOLVED: To provide a water supply pipe inside washing method of a direct compressive water supply device capable of efficiently washing a main water supply pipe in the direct compressive water supply device. SOLUTION: Household water meters for branch pipes 6a-6n connected to a vertical water supply pipe 2 are removed, compressed air supply devices 11 are connected to the parts removing the water meters from them, a master water meter 3 is removed, and a pressurized water supply system 14 for feeding pressurized water to the vertical water supply pipe 2 is connected to the part removing the master water meter therefrom. While supplying the pressurized water to the vertical water supply pipe 2 with the pressurized water supply system 14, compressed air is supplied to the vertical water supply pipe 2 intermittently from the compressed air supply devices 11 to carry out washing. |
