Sealing device (1) for sealing a drainage arrangement, including a flexible sealing film (3) with an opening (4), through which waste water can pass, and a connecting portion that is connected with the sealing foil (3) and that can be connected with a portion of the drainage arrangement.

The present invention is provided with a concealed embedded component, which comprises a lower main body with a cool water inlet passage, a hot water inlet passage, a mixing water passage and at least an outlet passage,; an embedded box, comprising a box body and a fixing frame covering the box body, a water testing element with the bottom surface disposed with a first passage and a second passage; the lower main body is disposed in the box body, the water testing element is disposed in the box body, the water testing element covers the lower main body to make the outlet passage, the mixing water passage connected to the cool water inlet passage or the hot water inlet passage. The lower main body is disposed in the box body to be separated from the concrete, it is convenient to disassemble for maintenance.

A one-piece drain fitting with an integral mounting flange. The mounting flange has a plurality of holes for quickly securing the mounting flange to the top or bottom side of a wood sub-floor with screws or nails. The drain fitting can alternatively be installed in pre-cast or cast-in-place concrete without the use of fasteners. The drain fitting can be provided with a removable temporary cover for keeping out debris during construction.

A one-piece drain fitting with an integral mounting flange. The mounting flange has a plurality of holes for quickly securing the mounting flange to the top or bottom side of a wood sub-floor with screws or nails. The drain fitting can alternatively be installed in pre-cast or cast-in-place concrete without the use of fasteners. The drain fitting can be provided with a removable temporary cover for keeping out debris during construction.