B&M Shop - 110mm to 100mm Reducer

Darando · 29-10-2019 10:55PM #1

Posting on the off chance someone might have seen one - looking for a 110mm to 100mm reducer for an extractor. Tried a few places but no joy, seen them online but be a week for delivery.

Its to connect an extractor duct (100mm) to pipe in the wall (a piece of 4"/110mm Wavin was used).

Currently a bodge with tape etc but want to get it sorted properly.

Calahonda52 · 29-10-2019 11:50PM

You are actually going the other way:D
what about a multi-wick?

Darando · 30-10-2019 12:55AM

Multi wick was an option I thought of

just thought the reducer might be available more readily than it seems to be!

https://www.amazon.co.uk/d/Ducting-Supplies/Drainage-Extractor-ducting-Reducer-110mm/B00N90SCSU

The wavin is actually in the wall...flexi 100mm is going from fan to the wavin and currently sitting inside the wavin and taped up!

Dr_Colossus · 30-10-2019 01:44PM

Next to impossible to find here, tried a good number of builder providers, plumbing specialists and DIY stores in the Dublin area a couple of years back when I was looking for similar. Some places had never heard of such a thing and couldn't offer any assistance.
In the end I made my own cutting a slice out of a couple of lengths of 110mm wavin to get the external diameter down to 100mm for the insulated ducting to fit over. Can post a pic later this evening if it helps.

Darando · 30-10-2019 02:18PM

Cheers, yeap not easy to find for some reason, at least I'm not the only one who ever looked for one! Plenty in the UK so might go that route if I can't sort something else! only a few quid in the UK also but then shipping is actually more than the part!

30-10-2019 02:21PM

Could you use a rubber boot like this?
they can do 4" or 110mm

https://2ecffd01e1ab3e9383f0-07db7b9624bbdf022e3b5395236d5cf8.ssl.cf4.rackcdn.com/Product-190x190/14d532d9-f08c-4231-ae4b-f155c8334aba.jpg

They have them in B&Q for 7/8e

Dr_Colossus · 30-10-2019 07:51PM

Pics as below. In my case the ducting from coming from a downstairs toilet so no water or condensation to contend with but still solvent cemented it in situe.
A shame one has to go to such measures but that's what you're up against in this country.

DublinDilbert · 30-10-2019 09:45PM

I never use a reducer for this. You just pull the duct inside the larger pipe going out through the wall. As above i've also used a spare multi-wick for this job too.

jack of all · 30-10-2019 10:12PM

I made a reducer of sorts to couple up an extraction hose to a dust port on an older table saw. Used a heat gun to warm up one end of offcut of pvc pipe, manipulating it until I could get it to fit in the (smaller) dust port. Bit of trial and error but it worked.

B&M Shop - 110mm to 100mm Reducer

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