McAlpine V33WM Twin Connector, White

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

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?

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.

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.

Got this. As we keep getting an air lock. That slows the water flow.This is ment to correct the problem.It did. Fix the problem. Water flowed perfect. But. Water also comes out of the air vent and. Ends up on the floor wall. And. Almost. OntoThe electric socket that the washer plug s in to.It's a good idea but not fit for the job.It needs a slight redesign. Poss fit the washer pipes. Lower. So the water level is lowered away from the air vent

My house has a pantry that the washing machine was plumbed into. It had a nominal 40mm diameter standpipe (actually about 42mm outside diameter, 35mm inside diameter or thereabouts). I wanted to add a table-top dishwasher in the pantry but both waste pipes would not fit into the standpipe at a time. Access was also quite difficult as the pantry has a width of around 700mm. I could only get one of my arms in to reach the standpipe without moving the washing machine out, and that would have been too much trouble to do.This adaptor is the solution that allows the waste for the dishwasher and the waste for the washing machine to use the standpipe at the same time. I installed it and it worked first time without any leaks. I also did not use any jubilee clips or PTFE tape as some people have done.What I did find was that I was not able to get one of the waste pipes fitted far enough along the tube to which it attaches with the adaptor in place. The solution was easy, because I was able to unscrew the "arm" from one side of the adaptor, pull the waste pipe and the arm out so that I could get to it with both hands, and then I was able to use sufficient force to push the waste pipe far enough along the arm so that it wouldn't come off. It was then easy to refit the arm to the adaptor and screw it back in place.One of the arms is pointing downwards and the other upwards in my setup. I have not blocked the hole at the top of the adaptor and I believe to do so could cause vacuum problems.

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.

Good well made i ordered the wrong one but will keep and use when needed