Dangerous Brian pays another visit

Gazza · Post by **Gazza** » Mon Jul 02, 2007 10:27 pm

My air pump is only around 6ft away and all done in bigger pipe work so this could be it.Did you fix the filter grid to the cone part like this

[img]http://www.koipix.com/gallery/albums/userpi ... G_1681.JPG[/img]

Bob Hart · Post by **Bob Hart** » Tue Jul 03, 2007 7:26 am

Fixed very similar to yours Gazza. The air pipe to the air ring is in solvent welded overflow pipe, so very large bore.

estanque_koi · Post by **estanque_koi** » Wed Jul 04, 2007 1:18 am

The concept of using "isolators" instead of valves is interesting. I don't quite understand how you made those, cause I don't know what are the "rubber toilet pan connectors" you mention.
Found this: Kwickfit 90 Degree Connector - 9" Tail with Fin Gasket (picture below)
Is something like this what you have used?
I can imagine they act as a big plug that you can fit in and out whithout getting your hands wet. Is that right?

Maybe nothing to do with, but somehow these isolators remind me of standpipes.

Post by **B.Scott** » Wed Jul 04, 2007 4:22 pm

That's it diego, but just the rubber bit on the bottom, not the whole thing.

Bob Hart · Post by **Bob Hart** » Wed Jul 04, 2007 7:48 pm

Diego,

This is what I did, see if it makes sense:

Take one of these
[img]http://www.koipix.com/gallery/albums/userpi ... IM0182.JPG[/img]

And saw of the bit at the bottom. Den Braven, or gold seal the rubber part onto the pipe stub which is left.
[img]http://www.koipix.com/gallery/albums/userpi ... IM0183.JPG[/img]

Buy one of these, which I think is 3" to 2"
[img]http://www.koipix.com/gallery/albums/userpi ... IM0184.JPG[/img]

Solvent glue it inside the pipe stub
[img]http://www.koipix.com/gallery/albums/userpi ... IM0185.JPG[/img]

Glue a length of 2" waste pipe inside it, and you have something which will push inside a 4" pipe.
[img]http://www.koipix.com/gallery/albums/userpi ... IM0186.JPG[/img]
[img]http://www.koipix.com/gallery/albums/userpi ... IM0187.JPG[/img]

Used with a 'T' instead of a bend, it pushes down into the bottom drain pipe to isolate the flow!
[img]http://www.koipix.com/gallery/albums/userpi ... IM0264.JPG[/img]

carlejo · Post by **carlejo** » Wed Jul 04, 2007 8:14 pm

Bob... that's a very clever idea!

Bob Hart · Post by **Bob Hart** » Wed Jul 04, 2007 8:35 pm

Saves Ã‚Â£90 for a ball valve and I needed 3 of them!

andyb · Post by **andyb** » Wed Jul 04, 2007 11:08 pm

He's a bright bunny.

Well I am still after plumbers bob

Great idea mate

Regards

Andy

estanque_koi · Post by **estanque_koi** » Wed Jul 04, 2007 11:15 pm

Yep, crystal clear now.

Quite clever, Bob!

That is a neat DIY gadget, I like the idea of saving some big valves.
Well done and thanks for the pics.
Diego

dfinn · Post by **dfinn** » Thu Jul 05, 2007 12:17 am

Hi,

So will you just fit 4" standpipes during normal operation?

Thanks,

Daniel