Thanks for all the plumbing tips Chris , I have noted them down in my black book for when I come to the point of loosing all my monxxxx sorry point of building my new home in Thailand.

I still stand by my earlier comment about the brickwork , yes I know its all gonna be rendered but to me it looks all a bit slap dash well it will do kind of thing ,, however I know your happy with it and thats what matters .

Quote Originally Posted by ChrisInCambo
The valve is one way, so it allows air into the system but prevents bad smells from escaping.
My missus is Googling this at the moment to see if it can be surgically implanted ( I hope she dont mean me ??? )