markocosic Posted September 18, 2023 Share Posted September 18, 2023 Anybody know what the diameter of the overflow tube on a McAlpine HC2650 type trap is? I'd like to tee into the overflow of the bath to drain condensate from an AC unit; but it's going to be a few days before mine (HC2600CL - a euro 50 mm waste version) arrives in the post and I'd like to collect the relevant gubbins beforehand if possible! https://mcalpineplumbing.com/traps/bath-traps-fillers-and-wasteflow/hc2650ukc-top-access-bath-trap-removable-chrome-plated-clicker-waste Thanks! Link to comment Share on other sites More sharing options...
Nickfromwales Posted September 19, 2023 Share Posted September 19, 2023 I would not be cutting into a flexi hose, why not just strap on to / tee properly into the pipe after the bath trap? https://www.screwfix.com/p/mcalpine-condensate-pipe-clamp-white/38108?kpid=38108&cm_mmc=Google-_-Datafeed-_-Heating and Plumbing?kpid=KINASEKPID&cm_mmc=Google-_-TOKEN1-_-TOKEN2&gclid=EAIaIQobChMIh7fNv4-2gQMVxt7tCh1bYQ2iEAQYASABEgIRVPD_BwE&gclsrc=aw.ds I also believe the MVHR units do blow a little air out of the condensate drain. Not something I’d want coming out of the bath overflow! Link to comment Share on other sites More sharing options...
ProDave Posted September 19, 2023 Share Posted September 19, 2023 49 minutes ago, Nickfromwales said: I would not be cutting into a flexi hose, why not just strap on to / tee properly into the pipe after the bath trap? https://www.screwfix.com/p/mcalpine-condensate-pipe-clamp-white/38108?kpid=38108&cm_mmc=Google-_-Datafeed-_-Heating and Plumbing?kpid=KINASEKPID&cm_mmc=Google-_-TOKEN1-_-TOKEN2&gclid=EAIaIQobChMIh7fNv4-2gQMVxt7tCh1bYQ2iEAQYASABEgIRVPD_BwE&gclsrc=aw.ds I also believe the MVHR units do blow a little air out of the condensate drain. Not something I’d want coming out of the bath overflow! Won't that need a trap? Otherwise how will the drain system pass a pressure test? Link to comment Share on other sites More sharing options...
markocosic Posted September 19, 2023 Author Share Posted September 19, 2023 AC unit drain. This needs a trap that doesn't dry out as it only generates condensate seasonally. Inaccessible dry traps are a no no to me. One piece of muck in those and they don't seal. Better / easier to drop it into a sink or a bath that's regularly used. In this case the bath is closer but I can't find one of these fittings locally: https://mcalpineplumbing.com/traps/bath-traps-fillers-and-wasteflow/wf21-sp-wasteflow-1923mm-pipe-connection https://mcalpineplumbing.com/traps/bath-traps-fillers-and-wasteflow/wf21-wasteflow-112-waste (with extra spigot on the free-to-air side of the bath trap rather than the stinky side) Then again nothing to stop me from getting the bath in and the main waste in now (the priority) then making good the overflow by pocketing that magic fitting when next in the UK. Who wants the other 6... https://www.ebay.co.uk/itm/202656644106 https://www.ebay.co.uk/itm/143587085577 Or the rest of the box... https://www.ebay.co.uk/itm/185470761199 Link to comment Share on other sites More sharing options...
Nickfromwales Posted September 19, 2023 Share Posted September 19, 2023 14 hours ago, ProDave said: Won't that need a trap? Otherwise how will the drain system pass a pressure test? Yup. I use the inline McAlpine traps with 21.5mm x 32mm reducers in each end. Link to comment Share on other sites More sharing options...
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