aav

I have a shower, bath and basin that all drain slowly, and the bath emptying now results in water coming up through shower trap. A lot of gurgling noises too. The shower trap does not empty quickly enough and will overflow over the shower tray if take a shower over a couple of minutes. I have...

When the macerator flushes it causes the water in the traps for the sink and washing machine to spyhon out. I was think of installing something like a anti-syphon p trap for the washing machine and sink. The macerator which I have on the 1st floor. I saw mentions of an AAV, but not sure if I...

Is there any reason why I couldn't convert a non vented thermal store to a vented version by replacing the AAV on the top of the cylinder with a header tank? I don't trust the aged back boiler to be pressured on my new second hand log burner and also don't want a pressured vessel

Hi all, Looking to install a small washroom in the first floor of my house. There is a single bathroom on the ground floor of the property underneath the stair. Wondering how best to connect in to existing drainage. Conscious that Regs state max. 6m for toilet and 3/4m for basin/shower. Without...

Wondering if you drainage experts could advise me please. I changed a flat roof to pitched, and along with a reworked bathroom, the soil stack needs to move. Where the soil pipe comes through the bathroom wall, my idea was to use an air admittance valve and box the whole soil stack into the...

Dear Sir's/Madam's (don't want to be sexest) Recently move house, and I am getting "intermittent" drain (egg) smells downstairs! particularly on the floor in the kitchen nearest the stack. There is an AAV (Durgo) fitted to the main stack as image (boxed in besides toilet "upstairs) All other...

We've had an AAV fitted in our upstairs bathroom - but I'm convinced something is not right with the plumbing/connections somewhere as most days there is an awful smell coming from the room - like we have a direct link to the main sewers!! We've had a few plumbers round but nobody has been able...

Hello, my question is: I'm working in the refurbish of an old building. The existing drainage is not going to be retained, moreover, it was external, but not coming through the roof, was wall mounted. I wouldn't like to do any hole in the roof. Could I use Air Admittance Valves for all the...