00000nam 2200000zi 4500 9.910837 CaOODSP 20221107182223 m o d f cr cn||||||||| 220503e199706##oncao o f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre NH17-255/1997E-PDF Philips, Bert, author. Development and testing of floor drain with a valve to block sewer gas for residential applications / prepared by Bert Philips, UNIES Ltd. for Dranjer Corporation. Ottawa : CMHC = SCHL, June 1997. 1 online resource (19 pages, 2 unnumbered pages) : illustrations, photographs text txt rdacontent computer c rdamedia online resource cr rdacarrier Digitized edition from print [produced by Canada Mortgage and Housing Corporation]. "CMHC Project Officer: Peter Russell." "Dranjer Corporation patented the concept of a floor drain with a counterbalanced valve/seal assembly to prevent the flow of sewer gas if the conventional P-trap dries out. It was anticipated that this design would function as a backwater valve and that it could sufficiently reduce trap evaporation to eliminate the requirement for trap primers. Field trial model XN-3 floor drains were produced for testing and monitoring. Testing and monitoring was done to assess the ability of the device to perform as a floor drain, meet the requirements of the proposed applications and to comply with the requirements of CSA Standard B79-94 "Floor, Area and Shower Drains, and Cleanouts for Residential Construction". Testing, monitoring and reporting were done by an "at arms length" engineering consultant"--Abstract. Summary in English and French. Drainage, House. Drainage domestique. Canada Mortgage and Housing Corporation, issuing body. PDF 923 KB https://publications.gc.ca/collections/collection_2022/schl-cmhc/NH17-255-1997-eng.pdf