Solvent / Push fit Joints on 110 mm Soil Pipe

[Possom]

Is joint C a solvent weld fitting and joint E a pushfit?

If this is correct, is still okay to apply solvent to D before inserting into E, or should it just be inserted without solvent?

 

[denso13]

All push fit, don't use solvent.

 

[Possom]

All push fit, don't use solvent.

If 'C' had been a solvent weld, would the pan connector below fit into a solvent weld joint? Or does the pan connector below only fir into a "plain" end such as 'D'?

http://www.screwfix.com/p/mcalpine-macfit-mac-8-90-wc-short-pan-connector-white-90-112mm/89461

 

[denso13]

It fits into a plain end of a fitting or into 110mm pipe.

 

[Possom]

So could the toilet pan connector be connected into the plain end of a solvent weld bend (into "C2"), then the solvent weld "D2" connected to a plain end length, then the other end of this length also having a plain end connected into another solvent weld "G2"?

 

[denso13]

Yes, that would work.

 

[Possom]

Yes, that would work.

Cheers. It was a solvent weld bend I had wanted, that's what I asked for in the local merchants. The bend in the first pic (which I now know is a push-fit) is what I was given! I'll have to bring it back.

 

[Hot&Cold]

Push fit soil is usually easier to use and will allow physical/thermal movement.

Also consider slight alterations,with solvent there is none

 

[Possom]

Push fit soil is usually easier to use and will allow physical/thermal movement.

Also consider slight alterations,with solvent there is none

I was intending to use solvent weld soil pipe following Madrab's posts in my thread below:
https://www.diynot.com/diy/threads/single-or-double-soil-bends.485791/

 

[Hot&Cold]

Maybe he is hooked on solvent.you going to join the club

 

[denso13]

I was intending to use solvent weld soil pipe

I would use solvent weld on smaller diameter pipes, but on soil pipe there isn't a problem with push fit IMHO.

 

[Madrab]

Maybe he is hooked on solvent.you going to join the club

Nah, just have shares in it.

When it comes to running through a wall, which the OP is proposing, then IMO solvent weld would be the safest to use, push fit has the potential for being pushed/pulled apart/misaligned/not fitted correctly. Thermal expansion shouldn't really be an issue IMO.

I never said that push fit couldn't be used nor could using both in a run not be OK, I recommended that when going through the wall it would be safer and easier. As a DIY fit then solvent can be a 'more secure' way to go IMO and TBH solvent weld soil pipe isn't difficult to fit at all, put it all together, mark the joins and then glue. Push fit can be a DIY pain, especially if you're not used to it, don't know how to prepare the pipe properly and don't get it past the seal without damaging.

 

[Possom]

When it comes to running through a wall, which the OP is proposing,

Where the soil pipe bend curves to go through the wall (indicated with orange arrow), is it okay to use a knuckle bend, which is rather more abrupt than the more common bend?

Just wondering in case I hear they're notorious for blockages! The other side of the wall, the normal bend there, will have an inspection port in any case.

 

[Hot&Cold]

I hear they're notorious for blockages!

Well take their advice

 

[Possom]

Well take their advice

Missed "in case".