You can spot a decent honest tradesman straightaway when they are happy to share tips and tricks to help save you money 😊

Hello, Just had to replace our trap and used this McAlpine Anti Syphon fitting as shown in the video. Your demonstration was very useful and informative particularly when it came to making sure the trap went on solid and tight. Many thanks

Cheers Derek, had normal bottle trap in downstairs toilet/utility room and washing machine was sucking it dry leaving drain smells, so changed it for a an anti-syphon one which has stopped that gurgling. Nice and easy 5 minute job too.

I Installed All Four Of These Devices Throughout My House & I Couldn’t Be Happier.....You’re Truly A Life Saver, Thanks Very Much.....5Stars ✌🏿

Thanks Al, I wondered why my sink was making a racket now I know so its off to the local DIY shop and get one. Cheers again. 👍😎

Many thanks - solved gurgling problem with the suggested anti-syphon fitting. Very helpful as always - great work.

Lifesaver! I'm in a studio flat and I'm fairly certain the sewer gas was driving me loopy, no more gurgling and no more sulfur smell

Love you guys. Great info ❤️

I installed 2 of the 4 of these I’ve purchased, 1 on my upstairs sink & the other on my basement slopsink, so far so good, thanks.....I will update once I’m done with the other 2

Interesting. ...I will remember to get One of them when I change mine Stay safe

Nice one Al

very good instructions!

nice one al simple solution.

Thanks great vids

Had a new bathroom fitted 14 months ago, and now our wash basin has just suddenly started doing this. Alarms bells are beginning to ring! But first of all I will fit one of these anti-siphon traps and hope that’s the end of it. Thanks for the explanation.

Very very good 👍👍

my dad always told me lefty loosie righty tighty lol

Good one Al.. I'll have a go at this, am getting a gurgle and smell afterwards from wash basin which is plumbed into the vent pipe outside, a p trap is in situ, (I would have thought it would be ok if already going to the vent pipe, obviously not) so will try a vented p trap, got to stop that stink! 😁

You are a saviour❤ god bless

Hi Dereton33 your videos are a great help. Can you tell me where you get the actual waste from the actual sink ( push and slide) in this video please, we have one the same but the thread has gone so needs replacing. Cheers Kevin.

Great stuff. Always reassuring to watch these when DIY'ing. One question, does the vent cap stay screwed on on these or do you remove it. What's the difference if you do or don't. Sorry that's two questions but with it off, it seems to drain faster and I was wondering if that's the way it's designed.

Back again watching your videos brilliant 👍👍 just a question if I get a gurgle from my walk in shower and can’t access to get a anti vac trap on , can I fit a big 4inch air admittance valve on the end of the 4inch run (internal soil stack)where the shower waste goes into? Will this then help with the suction of the shower waste? Any information would be a great help and appreciated 👍

Great video. One question, my son's sink and our ensuite have started to gurgle, the sewer waste pipe is clear, is it common for it just to start out of the blue?

I had that gurgling so fitted a vented P-trap (SA10V McALPINE 32mm Anti-Vac Basin Sink Waste U Bend P Trap) but now I have a blockage after the trap not long after fitting it and wonder if there might be a connection. In my research I have found that an In-line vent (AAV - Air Admittance Valve) should be a separate thing fitted ABOVE the sink line so although this is neat I'm not sure how it can be code (other than code being different in the US from the UK - but "Ye cannie change the laws of physics Capn")

Hi. MIne sounds like it is glugging from several feet further down the drain system - I suspect where the basin drain pipe joins the 4" pipe but that is under a floor so not easy to see or get at. Will an anti-siphon trap on the basin help with that too or only when the trap itself is doing the glugging ? Installation is only a year old and ther is an internal AAV on top of the internal high point of the stack

Hi as I understand the anti siphon is engineered by allowing the pipe to vent after the P/ tittle trap. My question is how does this system prevent air from coming through the pipe work ? Is there a one way valve?

A question about the anti siphon screw cap. Is it a screw cap just to gain access to the valve, eg if it sticks. My plumber fitted one and left the cap totally unscrewed and just resting on top.

How come you have a nice tan Al, been hissing down here and overcast for weeks lol Best wishes to you both.

Hi, I’ve just fitted one of these anti syphon (P trap) to my kitchen sink due to noises and smell. Pipework very much like the video but P trap not bottle. The noises stopped but I found if I emptied a bowl of water down the sink, the actual anti syphon valve leaked water?? Could this be faulty or could it be the pressure of the water being too much for the tight bend out?

Is it necessary to purchase this device for all of the sinks in the house or one will do the job for multiple areas ?

Hi Can I easily replace a normal U bend type of waste with a bottle trap? Is one better to use than the other?

Can you get these for baths too? Are they needed on a shower trap if the shower exits right to an outside hopper?

Hi there. I have fitted one of these just a question does the screw cap have to be fully closed or open to let air out I'm not sure ??

Hi there, I am having this sort of problem with my bathroom basin, the water drain out pretty quickly but after that a few seconds later there is some gurgling sounds and then followed by three thumbing sound...Can you explain the mechanics of why there is this sound? Do you think there is blockage? If yes, what method can I try? A few days ago I notice the drainage footage was a bit slower, so I pour dishwasher and hit water...then the drainage flowrate has become very good...but the gurgling sound persist with the additional three thumping sound after the gurgling...Also what do you can these device? I we told from the hardware stall that there is different sizes, one for kitchen basin pipe compared to Bathroom Toilet Basin pipe...Is this true in Asia?

Would this fix a kitchen sink with washing machine waste on the same pipe?

Why do I get a slight leak from the valve on top when I drain the bath

Hi, I have a question, I have in my kitchen 1 big sink with a smaller sink to the left, after running the water in either sink I get a gurgling come up, can you help ? it also happens to our bathroom sink as well.

Hi there, mine is leaking from the valve but it wasn't before I took it apart to remove the hair blockage, do you know why this is doing this?

I'm gurgling down stellas 🍻🍻🍻 down the bottle trap

Hello ! What are these traps called and where can i find them in the uk please?🙏

Wondering if you could help me Al. I fitted one of these last year due to gurgling and bad smells www.amazon.co.uk/gp/product/B005CTS8UI/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1 and while the gurgling stops, I find I still get bad smells if a lot of water is running down the drain. I have a 1.5 sink and the smell is coming from whatever one does not have the water running through it. Both basins are connected to the same trap. My assumption is that the flowing water is breaking the trap and allowing smells back up. Anything I can do?

hi, i think mines leaking from the the air valve, will i have to replace the whole thing?

👍👍👍

But what if you can't redirect your washing machine outlet, and your still getting a smell coming through you'd kitchen sink...??

Mine makes that sound as the sink is running and it is effing loud, drives me nuts

"The fat part goes to the back!" isn't that fat-shaming? Take off the trap and empty it back down the sink. Oh, everyone has done that. No shame there. Now, back to those doughnuts. Just got back from North Wales finishing off someone else's work. A bath, a shower tray and a basin all pipes disappearing under the floor (carpeted, click vinyled and tiled and coming outside on a single 40mm pipe??? Hmmm??? Had to conceal a hidey-away, separate aav, neatly behind a free standing bath. Another heatwave coming, Woo-hoo!

Don't traps like that just fill up with crap? They are illegal here where I live. Traps should be self scouring so they don't need maintenance.

Hi I live in Tijuana Mexico most places apt and hotel don't have that p trap because previous renters will always steal them when they leave to resell them , what can I do or use to stop those fumes when their is no p trap

Hi mate wondering if I can pick your brains as you seem more of an expert than me . Fitted a washing machine water drain hose under my sink ( for the machine to release its water through the same pipe as the kitchen drain ) However lately it’s started to making a random trumpet type sound? When the water is off. And nobody is in the kitchen. Does it every 30 mins or so. Water runs and drains fine both hot and cold. It’s like a abrupt pressure sound which creates a trumpet sound. Very strange. Only does it when nobody is using the taps. The washing machine is also unplugged and not on. I should point out the only other time its makes the sound is when the washing machine releases its dirty water, it makes that same sound through the sink. Like a pressure trumpet type sound, it’s very abrupt and doesn’t last. Just a quick ‘ BOP’ What do you think it is? Many thanks