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Pub. No.:    WO/2018/042202    International Application No.:    PCT/GB2017/052567
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Tue Sep 05 01:59:59 CEST 2017
IPC: E03F 5/04
E03C 1/298
Applicants: MCALPINE & CO. LTD.
Inventors: MCALPINE, James Edward
A shower drain fitting (10) for insertion into a drain outlet of a shower tray comprises a hollow body (12) and a closure member (14). The closure member (14) comprises an internal face and an external face which facilitate opening and closing the drain fitting (10). The closure member (14) is movable between a seated position and an open position, wherein in the seated position the closure member (14) engages with an outlet end (40) of the body (12) such that back-flow through the body is prevented. In the open position contact between the closure member (14) and the outlet end of the body (40) is broken thereby providing a one-way through-flow path through the body (12). In normal operation the closure member (14) is biased to the seated position and is movable between the seated position and the open position in response to fluid flowing through the body (12) from the drain outlet side of the body (12) and is movable substantially automatically from an open position to a seated position in the absence of fluid flow from the drain outlet side of the body (12) and in response to pressure on the external face of the closure member opposite the drain outlet side. The internal face (22) of the closure member comprises a sloping surface.