Adding strap on boss to 110mm waste

[xr4x4]

Hello all,

Currently have a 110mm waste pipe running horizontally under the floor from the loo, so the loo goes through the floor, to an elbow, then a fairly longish run to the stack.

Just after the 110mm elbow mentioned above, there is a strap on boss with a 1 1/4 waste which runs along and then up through the floor to a basin.

Can I add another strap on boss downstream of the above to run a 1 1/2 pipe for a bath?

Or will I have problems with gurgling and syponing?

Thanks in advance.

 

[75pete]

Not a plumber just a diyer, but would say yes. Have fitted same without any problem.
Pete

 

[Whitespirit66]

Should be OK, but you could always use one of these.

http://www.wickes.co.uk/1-12in-x-75mm-anti-vac-bath-trap-l10v/invt/226986/?source=123_74