초록 ▼

A system for providing temporary water service between a water main and one or more locations normally connected to the main in which a pipeline is provided above ground and has a supply section and a return section which are connected to the main. Each of the locations are connected between the sup

A system for providing temporary water service between a water main and one or more locations normally connected to the main in which a pipeline is provided above ground and has a supply section and a return section which are connected to the main. Each of the locations are connected between the supply section and the return section. The water is circulated from said supply section, through said location and to said return section in response to the ambient temperature dropping below a predetermined value.

대표청구항 ▼

A system for providing temporary water service between a water main and one or more locations normally connected to said main, said system comprising a pipeline located above ground and having a supply section and a return section, means connecting said pipeline to said main, pipe means for connecti

A system for providing temporary water service between a water main and one or more locations normally connected to said main, said system comprising a pipeline located above ground and having a supply section and a return section, means connecting said pipeline to said main, pipe means for connecting each of said locations between said supply section and said return section into a closed loop and pump means responsive to the water temperature falling below a predetermined value for circulating said water from said supply section, through said location and to said return section, and said pump means generating a sufficient flow velocity to said water in said loop such that the friction developed due to flow velocity prevents the water from freezing.