Patent ID: 6953160

Claim:
In a mounting assembly for mounting a spray head for fire fighting to an opening of a less than 30-mm thick wall, the improvements comprising: a holder for receiving the spray head; a clamping piece which comprises threads for engaging threads in the holder the threads of the clamping piece and the threads of the holder providing for axial movement of the clamping piece in relation to the holder; a flange support which comprises a sleeve-like piece comprising a sleeve portion having an internal opening therethrough, and at one end of the sleeve-like piece a flange-like piece for fastening to a facing surface of the wall; and an expansion means supported by the holder, the clamping piece being arranged so that movement thereof causes movement of the expansion means from its zero position, in which a diameter of the expansion means has a first value which is smaller than a diameter of the internal opening of the sleeve-like piece, to a fastening position, in which the diameter of the expansion means has increased to a second value for pressing the expansion means against a wall of the internal opening in the sleeve-like piece for fastening the spray head to the wall.