Leaking pipe from "thingy" under sink... *pic*

[n20y1d]

I have a leak under my sink, the leak in question is coming from the part i've crudely circled, I cannot see anything similar from googling "sink plumbing" what is part called in case i have to replace it and what is it actually for? and does anyone know how i'd go about stopping it leaking?

The leak only really occurs if i fill the sink and release the plug, it doesnt tend to happen if i have the tap running with the plug out.

Would appreciate any advice. [/img]

 

[Burnerman]

Its called a Ventapipe made by Mcalpine......they allow air into the drain to prevent gurgling and to allow better water flow. I guess the vent has stuck open due to waste gunge.
John

 

[keithsb]

Anti-siphon valve I would guess.

If you Google "anti-siphon valve", and select images, you should see something similar.

see below

http://www.google.co.uk/images?hl=e...sa=1&q=anti-siphon+valve&aq=f&aqi=g2&aql=&oq=

Keith

 

[n20y1d]

Thanks for the replies, is there an easy way of cleaning this vent/valve?

Does the top screw off or aything? I'm not at home at the moment so cant have a play with it?

 

[Burnerman]

You can certainly dismantle that part of the waste and give it a good wash....there's also a chance that its not needed anyway - very few sinks have them.
John