초록 ▼

A protective enclosure for a backflow prevention device including a rectangular cover member having insulated top and side walls secured to a platform member to completely enclose the backflow prevention device. One of the side walls is provided with a drain opening adjacent the platform member and

A protective enclosure for a backflow prevention device including a rectangular cover member having insulated top and side walls secured to a platform member to completely enclose the backflow prevention device. One of the side walls is provided with a drain opening adjacent the platform member and a closure member hinged above the drain opening and biased to a closed position. In large cover members, the side walls are sub-divided into removable side panels to facilitate access to the interior space within the cover member and also to facilitate assembly and disassembly.

대표청구항 ▼

A protective enclosure for a backflow prevention device including a check valve assembly in fluid communication with an inlet pipe and an outlet pipe, comprising: (a) an elongated platform member having a substantially planar level floor surface mounted upon the ground beneath the backflow preventio

A protective enclosure for a backflow prevention device including a check valve assembly in fluid communication with an inlet pipe and an outlet pipe, comprising: (a) an elongated platform member having a substantially planar level floor surface mounted upon the ground beneath the backflow prevention device, and having an opening through said platform member for the passage of each inlet pipe and each outlet pipe into the ground, (b) an elongated cover member having a top wall and connecting side walls having bottom edge portions resting upon said floor surface, the height of said side walls being greater than the height of the backflow prevention device above said floor surface, so that said cover member and said platform member enclose a space receiving the entire backflow prevention device, (c) a drain opening through the bottom edge portion of one of said side walls adjacent said floor surface, (d) a closure member large enough to cover said drain opening, (e) hinge means connecting said closure member to said side wall adjacent said drain opening for swinging movement between a closed position covering said drain opening and an open position away from said drain opening, and (f) means biasing said closure member to said closed position.