Patent ID: 11952754
Assignee: SOUTH BAY PLUMBING, INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A method of using a backflow box with a water-using appliance, comprising: providing a backflow box including a plurality of backflow plumbing components for water supply flow, the plurality of backflow plumbing components including a backflow preventer including a drainage outlet, a nipple drain, and a plumbing outlet that the water supply flows out of the backflow box from, the plumbing outlet, the nipple drain, and the drainage outlet all being separate, and the backflow box including a drainage spaced vertically below the nipple drain and the drainage outlet; installing the backflow box in a wall cavity of a building in an accessible and viewable location; coupling the backflow preventer of the backflow box to a water supply line and the water-using appliance; coupling the drainage of the backflow box to a drain line of the building; inhibiting backflow from the water-using appliance from flowing into the water supply line with the backflow preventer; draining backflow through the drainage of the backflow box to the drain line of the building.