Connecting into a 3 inch soil pipe? Is there a fitting?

polly_x · Joined: 09 Apr 2006 Posts: 14 Location: United Kingdom

Does anyone know where I can get fitting to connect into an existing 3 inch soil pipe?

I have seen the flange type ones for 4 inch where you drill the hole and then bolt it around. Where can I get a 3 inch version?

I think its a strap boss?

Thanks,

hi-spec plumbing heating · Posted: Tue Nov 20, 2007 8:51 pm

is it a plastic or cast ?

polly_x · Joined: 09 Apr 2006 Posts: 14 Location: United Kingdom

hi-spec plumbing heating wrote:

is it a plastic or cast ?

Sorry, its plastic.

3 inch Vertical existing stack that I want to connect a new waste into for sink and bath in the loft.

Thanks,

hi-spec plumbing heating · Posted: Tue Nov 20, 2007 9:15 pm

you sure it's 3"

cb9002 · Posted: Tue Nov 20, 2007 10:56 pm

Just a thought here, but my house has a normal 4" stack, but above the highest connection it is reduced into a 3" for the vent pipe out of the roof.

The OP did say "Loft", so I reckon they might be trying to connect into the very top of the soil stack, currently used as a vent.

polly_x · Joined: 09 Apr 2006 Posts: 14 Location: United Kingdom

cb9002 wrote:

Just a thought here, but my house has a normal 4" stack, but above the highest connection it is reduced into a 3" for the vent pipe out of the roof.

The OP did say "Loft", so I reckon they might be trying to connect into the very top of the soil stack, currently used as a vent.

Thats exactly what mine is like. All 4 inch then with a 3 inch vent above the last toilet going up to the roof.

Was hoping that I could connect into this 3 inch pipe higher up, rather than running a sink/bath drain all the way down the void to the 4 inch section.

Any problems with that?

Any ideas where to get a 3 inch strap boss?

Thanks,

hi-spec plumbing heating · Posted: Wed Nov 21, 2007 11:44 am

never seen one.
raise the 4" section higher or even to the top.

Nige F · Posted: Wed Nov 21, 2007 2:41 pm

hi-spec plumbing heating wrote:

never seen one.
.

.I have years ago .....and now Polypipe allegedly make them

I asked while I was in the merchants

hi-spec plumbing heating · Posted: Wed Nov 21, 2007 2:43 pm

handy to know

http://www.polypipe.com/polypipe/controller?action=PP-ProductDetails&productid=69317

gas4you · Posted: Wed Nov 21, 2007 7:03 pm

Local drain center stock 3" strap on boss. I fit them quite often. Got one to do tomorrow.