McAlpine V33WM Twin Connector, White

We have just moved into a house with a utility room, it needed the plumbing adapting so we could fit a washer and a dishwasher but there was only one cold feed and one standpipe with a u bend. I bought and fitted a brass splitter for the cold feed issue, I got it from Amazon. It was really advertised for splitting a garden tap onto two hoses. A bit of plumbers tape on all three threads and it works great, not a drip at all. The standpipe was the bog standard Type but covered in emulsion, cleaned the off an recut the top properly square. Cleaned off the burs. Fitted the McAlpine on top(made sure top of pipe was in excess of two feet(60cm) high.Tightened it onto pipe and nipped up the brackets to ensure pipe well fastened to wall. The pipe is vertical. Pushed washer waste pipe onto one horn (made sure it was very well seated) Pushed the dishwasher waste onto other horn (dishwasher waste tube was slightly larger than washer tube but horns are multi thickness so a good fit for both. Nipped up nuts on both horns for best angle to avoid pipes from nearby combi boiler. The McAlpine works great, no leaks and even my ham fists didn't cause a problem. The item is very well designed, I worried about the previous bad reviews and the possibility of the vent hole leaking. I looked at the item when it arrived and it was obvious that the waste water enters the horn, into the waste pipe and is deflected down. The vent hole at the top is like the small end of a funnel which totally prevents the water splashing up but provides the necessary air hole to stop a reverse syphon back to either machine. All in all a good bit of kit if used on a standard stand pipe with a u bend. It is not designed to be fitted on its side or in a sink waste, but why would you do that?

At first I thought I had a faulty product with a hole in it and my return window with Amazon had already closed.I contacted McAlpine through their support page via Amazon and they replied.It seems that what I thought was a hole and a faulty product was actually an ‘air gap’You can understand why McAlpine only deal directly with the trade as morons like me who are not qualified plumbers don’t know these things.I have now fitted the adaptor and it is working very well and for the sceptics, no waste comes out the little hole.

A good product, I wish I had known about this earlier as I've had to put up with a bulky, mismatch of waste pipes for a long time. This is compact and much smaller than I had been using, very easy to use and install. Ok, now onto the pipe size, the product has a 40mm pipe connection, if like me and you have old waste pipe of 38mm, then you need to be careful how you fit this product. It will fit snug if you tighten the connection as tight as you can, using plummers tape can help (although I didn't need too), I've had no leaks to date. If you are thinking 'why didn't I just replace the old pipe?' The reason being it would of meant removing the whole waste pipe system, including the kitchen sink waste as all the connections were the old glue together ones and I must add that I didn't do this catastrophic pipework.

Warning only fits on a VERTICAL 40mm standpipe. It as a vent hole to stop vaccum forming. Will leak if not used vertically!!Has a blue bung on each outlet so only one outlet can be used. REMOVE THE BLUE BUNGS ON THE OUTLETS YOU WANT TO USE. Well made really useful adpator for TWO waste outlets, eg washing machine and dishwasher into one standpipe. Only let down by no installtion instructions.

I didn't realise that it was meant to have an airgap, I have discovered that this product fits perfectly. It's been fitted for over a month now and no leaks :-)https://www.amazon.co.uk/dp/B0CX8ST7HS

So this is an ideal tool we used it for the dishwasher and washing machine ...As others have mentioned theres a hole right at the top which we didn't notice so water came out ...Quick silicone job and it's fine now but be aware people

Given one star so people read this and maybe avoid buying it if not suitable for their needs. If you have a vertical waste pipe, 40mm, with a water trap / U-bend below, then this is absolutely fine and for that I would give it 5 stars. It comes with plugs so if you only want to connect one device, that's fine too. If you need to use it on a horizontal waste pipe, or connect it under your sink into existing plumbing at some angle, it won't do the job. There is an air vent hole in the middle top of the unit, so it must be mounted onto a vertical pipe exactly as shown in the picture. If you need to connect the waste outlet under a sink, B&Q have a "Floplast double nozzle trap" and also a single nozzle version.