Venting pipe in domestic water system.


Postby grakar » Tue Sep 23, 2008 4:09 pm

A pipe rises from the waste water pipe from our bathroom sink and goes through the roof I assume for venting purposes. This pipe encroaches on space I need for a vanity unit and I wonder if it can be removed. As I understand it no smell can come up through the sink as there will be a trap fitted. What please is the function of this pipe and can it be removed?
grakar
Posts: 2
Joined: Tue Sep 23, 2008 3:56 pm

Sponsor

Simply Build It

Postby jim the plumb » Tue Sep 30, 2008 7:53 pm

You are probably talking about the 4inch soil pipe that extends through the roof to the open air. This pipe vents smells from the toilet/ waste drains to open air.

You can fit a 'durgo', or 'air admittance valve' by cutting down this 4inch pipe, but the valve must remain higher than the highest waste in the bathroom. i.e. the basin.

HTH, jim
jim the plumb
Posts: 36
Joined: Sun Sep 28, 2008 7:52 pm


Postby grakar » Wed Oct 01, 2008 8:12 am

Thanks Jim for your reply.
The waste water from the basin in addition to venting through the roof is piped to a rainwater down pipe. This pipe is open to the rainwater gutters on the roof. Do I need further venting? The soil pipe from the WC is fed to a separate downpipe.
grakar
grakar
Posts: 2
Joined: Tue Sep 23, 2008 3:56 pm


Display posts from previous
Sort by
Order by


 


  • Related Topics