"Push fit" downpipe fittings

[lavinpj1]

Hi folks,

Really basic question - it's the first time I've worked with downpipe.

I've put a bit of guttering on the back of a new shed and want to run downpipe to a water butt. I have 68mm downpipe and fittings such as https://www.toolstation.com/68mm-offset-bend/p52079 and https://www.toolstation.com/112mm-half-round-stopend-outlet/p93342.

The "offset bend" has a push fit end into which 68mm pipe fits nice and snug. Then it has the other end which fits inside the downpipe but incredibly loosely. Likewise, if I put an "offset bend" directly onto the outlet of the "stopend" it fits very loosely.

Am I missing something, or am I supposed to put a little bit of silicone or a screw to hold these loose connections together?

 

[Mike13]

are they two bit from different makes of piping, they do not always interfit very well, make sure it is all made by one company, look closely at the molded in part numbers and logos to be sure.

 

[lavinpj1]

Good question. I have had the downpipe in my shed for years. No idea where I got it from. Very probably not.

That said, the offset bend and stopend outlet from Toolstation are both Aquaflow. Would you expect the offset bend to push fit into the outlet of the stopend directly or is there supposed to be some kind of adapter?

 

[aveatry]

Good question. I have had the downpipe in my shed for years. No idea where I got it from. Very probably not.

That said, the offset bend and stopend outlet from Toolstation are both Aquaflow. Would you expect the offset bend to push fit into the outlet of the stopend directly or is there supposed to be some kind of adapter?

If you push and twist it then the thinner part of the offset will then go into to a little bit of the outlet. You could put a short section of downpipe between the two.

 

[aveatry]

are they two bit from different makes of piping, they do not always interfit very well, make sure it is all made by one company, look closely at the molded in part numbers and logos to be sure.

I prefer the flowplast stuff from screwfix. But yes I was strugling with some and realised it was marly and it would not play nice with the floplast, to get by I filed off the little ridges on the section that goes into the downpipe.