Is this the correct part saniflo coupler?

[Tennentslager]

This is leaking and in operation as the pump burps the pipe moves so guess this is why we need the ribbed flexibility.

[Tennentslager]

I will update this in case it's of any interest to others...

[Tennentslager]

Well, fitted but it is still leaking.

I need advice, can I replace this with solvent weld ?

[Tennentslager]

Maybe @Nickfromwales 

What you don't see is the waste pipe 45mm that the rubber connector is jubilee clipped to.

plan A, solvent weld from that back towards the saniflo then drop from 45 to 40mm and use existing rubber connection to the ugly (expletive deleted)er

[Tennentslager]

Something like this

[Nickfromwales]

@Tennentslager

Yup. Defo swap to solvent where you’re half in / out of the wall. You need some sort of rubber / flexible connection on the discharge side, immediately before it picks up the solvent weld. 
Don't forget to clean that pipe before you pick it back up in solvent weld, as that will be contaminated now.

[Tennentslager]

To finish this off, the pipe in the wall had indentations from over tightened previous crocodile rings so solvent weld wasn't looking good.

Used the McAlpine flexy with compression fitting and it held very tight.

Now out the wall the end of the flexy was jointed to the existing using the rubber joiner from saniflow.

Job done.

 

 

[Tennentslager]

Thanks @Nickfromwales

[Nickfromwales]

9 hours ago, Tennentslager said:

Thanks @Nickfromwales

You may hate me, but that flexi would have been the last thing I installed on the discharge of a Saniflow.....

You may be ok with it, does it move at all when the unit is pumping?