DRAINAGE METHOD IN WATER PIPE IN HEADER PIPING, HEADER PIPING STRUCTURE USED FOR EXECUTING METHOD THEREOF, AIR SUPPLY DEVICE AND READER

摘要

PROBLEM TO BE SOLVED: To simply discharge water remaining in water or hot water supplying water pipes plumbed with a header method by a simple device and to make it possible to prevent the water in the water pipes from being frozen. ;SOLUTION: Water remaining in water supply pipes 15 plumbed between a header H₁ for branching and supplying water from a water main to water supply sections A₁-A₅ and the water supply sections A₁-A₅ is discharged. In that case, compressed air is supplied to the inside of the header H₁ from an air supply device E₁ to pressurize in a state to open faucets V₁-V₅ of the water supply sections A₁-A₅, and water in the water supply pipes 15 is discharged.;COPYRIGHT: (C)1999,JPO