Pipe connection

I wish to fix a 100mm plastic pipe into a garden vac to enable using a trai ling hose. The opening exists in the Vac,'s plastic (?) shroud and I have a short length of plastic pipe to make the connection (and the flexible hose from an old machine). I need to fix a collar around the plastic pipe to en able it be fixed in position. I could probably get a piece of aluminium, or I have a small sheet of acrylic, or if all else fails fashion it out of wo od but what would be the best way of fixing this collar, of whatever materi al, in position. It will have to be a very solid connection as it will have to withstand a certain amount of abuse Is there any plastic solvent/glue t hat might work?
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fred wrote:

I use 110mm soil pipe in my workshop (woodworking) dust extraction system with 100mm (French standard size) soil pipe to step down to 100mm flexi off to each machine. Where there is a gap to be filled, I use foaming polyurethane glue and jubilee hose clips for attaching the flexi
Would this help in your application?
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On 13/12/2013 09:41, fred wrote:

Don't quite understand what you are doing from this description. Do you know what sort of plastic your 100 mm pipe is made from? ABS, PVC, Nylon, PE/PP? Is it rigid or flexible?
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On Friday, December 13, 2013 10:11:37 AM UTC, newshound wrote:

trailing hose. The opening exists in the Vac,'s plastic (?) shroud and I ha ve a short length of plastic pipe to make the connection (and the flexible hose from an old machine). I need to fix a collar around the plastic pipe t o enable it be fixed in position. I could probably get a piece of aluminium , or I have a small sheet of acrylic, or if all else fails fashion it out o f wood but what would be the best way of fixing this collar, of whatever ma terial, in position. It will have to be a very solid connection as it will have to withstand a certain amount of abuse Is there any plastic solvent/gl ue that might work?

THe pipe is similar to plastic sewer pipe. The plastic on the machine is se mi-flexible and about 5mm thick. If I can secure a collar to the plastic pi pe I can use self tappers to fix it to the machine
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On 13/12/2013 11:45, fred wrote:

OK. I think the simplest method might be to make a "flange" using 18 mm ply on your 100 mm pipe. You can fix this to the pipe with radial wood screws from inside, using mastic or silicone to fill any gaps. Then simply screw the flange to the machine. Or why not make a "washer" from the same material which fits over the machine nozzle and just fits inside the pipe. Again, attach with screws and seal with silicone or mastic.
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On Friday, December 13, 2013 12:08:51 PM UTC, newshound wrote:

a trailing hose. The opening exists in the Vac,'s plastic (?) shroud and I have a short length of plastic pipe to make the connection (and the flexibl e hose from an old machine). I need to fix a collar around the plastic pipe to enable it be fixed in position. I could probably get a piece of alumini um, or I have a small sheet of acrylic, or if all else fails fashion it out of wood but what would be the best way of fixing this collar, of whatever material, in position. It will have to be a very solid connection as it wil l have to withstand a certain amount of abuse Is there any plastic solvent/ glue that might work?

u
s semi-flexible and about 5mm thick. If I can secure a collar to the plasti c pipe I can use self tappers to fix it to the machine

ic.
Was thinking along those lines myself. Not too happy about screwing into th e edge of Ply but 18mm is quite thick. Was trying to avoid wood as water an d damp will be around it in use which is why I was thinking of acrylic (whi ch I have) or aluminium
Have some off cuts of mahogany and californian red wood up to 1" thick. Wil l have a go with that. The alternative is pay £200 for the official kit
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On 13/12/2013 12:42, fred wrote:

I would not go for acrylic, too brittle. Those woods might be OK, if you have large enough bits. If you can discover whether the pipe is ABS or PVC you could get some sheet material (eBay) then screw plus solvent weld. You don't necessarily need a complete flange provided you can seal the pipe to the the vacuum. You could attach three or four axial ribs to the pipe, then screw these to the body.
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On Friday, December 13, 2013 1:47:48 PM UTC, newshound wrote:

g a trailing hose. The opening exists in the Vac,'s plastic (?) shroud and I have a short length of plastic pipe to make the connection (and the flexi ble hose from an old machine). I need to fix a collar around the plastic pi pe to enable it be fixed in position. I could probably get a piece of alumi nium, or I have a small sheet of acrylic, or if all else fails fashion it o ut of wood but what would be the best way of fixing this collar, of whateve r material, in position. It will have to be a very solid connection as it w ill have to withstand a certain amount of abuse Is there any plastic solven t/glue that might work?

you

is semi-flexible and about 5mm thick. If I can secure a collar to the plas tic pipe I can use self tappers to fix it to the machine

m
m
astic.

o the edge of Ply but 18mm is quite thick. Was trying to avoid wood as wate r and damp will be around it in use which is why I was thinking of acrylic (which I have) or aluminium

Will have a go with that. The alternative is pay �200 for the offi cial kit

Any easy way to tell the difference between acrylic and ABS ? What I am tal king about is the orange coloured pipe generally available from the sheds a nd used for underground water systems. I'm not too worried about sealing it tight as the machine has plenty of pow er but I would like to keep the internals of the pipe clear of obstructions as I don't want the garden debris hanging up on screw heads or whatever.
Thinking about it if I get 110mm diam pipe and slit it lengthwise it should be possible to spring it into position within the hole in the vacuum shrou d. At that point the trick will be to stop the pipe pulling free as that is what the majority of pressure will be (as in using a domestic vacuum and p ulling it by the hose)
Thanks for your ongoing input. This discussion has helped in clarifying the problem for me.
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On 13/12/2013 15:13, fred wrote:

...

I would expect that to be uPVC. You might find it useful to trawl through the fittings you can buy for uPVC drainage pipe and see if any of those can be adapted to suit your needs.
Colin Bignell
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On 13/12/2013 19:52, Nightjar wrote:

It's not going to be acrylic but it could be ABS, although I'm inclined to agree with Colin.
Look for recycling symbols, 3 "PVC" for pvc, 7 "O" for other which includes ABS (and acrylic, polycarbonate). If it is "genuine" drainpipe then yes, check out fittings.
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