George-Pole Posted August 9, 2017 Report Share Posted August 9, 2017 Hi all. I have bought a widebeam sailaway. It has an insulated flue outlet fitted to the roof which I think will be a problem as the inner pipe is only 4" dia (100mm). All of the stoves I have looked at have a flue outlet of 5" (125mm) or 6" (150mm) dia. Can I put a reducer in place to fit to the roof outlet. From what I have read I can only find mentions of increasing dia from stove to flue not decreasing like I need to do. Hope this makes sense Any advice would be gratefully received. Link to comment Share on other sites More sharing options...
blackrose Posted August 9, 2017 Report Share Posted August 9, 2017 42 minutes ago, George-Pole said: From what I have read I can only find mentions of increasing dia from stove to flue not decreasing like I need to do. Why can't you just turn one of these fittings the other way around? http://www.snhtradecentre.co.uk/flues-fittings/black-stove-pipe-increaser-4-inch-to-5-inch.html?gclid=EAIaIQobChMIuuT3muPK1QIV8xXTCh3nwAFNEAQYASABEgK8ovD_BwE Any good fabricator will be able to make you the fitting (& flue) you need if you want mild steel with a decent wall thickness rather than thin vitreous enamel. Link to comment Share on other sites More sharing options...
George-Pole Posted August 9, 2017 Author Report Share Posted August 9, 2017 8 minutes ago, blackrose said: Why can't you just turn one of these fittings the other way around? http://www.snhtradecentre.co.uk/flues-fittings/black-stove-pipe-increaser-4-inch-to-5-inch.html?gclid=EAIaIQobChMIuuT3muPK1QIV8xXTCh3nwAFNEAQYASABEgK8ovD_BwE Any good fabricator will be able to make you the fitting (& flue) you need if you want mild steel with a decent wall thickness rather than thin vitreous enamel. That's the thing I don't know if it will be safe that way around, will it still draw properly Link to comment Share on other sites More sharing options...
dor Posted August 9, 2017 Report Share Posted August 9, 2017 shouldn't be a problem to go from 5" to 4". May improve draw. My Stove (Stovax) has a 5 inch collar. My iron flue is like a bit of soli pipe, with a five inch "socket" end fitted into the stove collar, with a four inch (OD) pipe going up through the ceiling collar. Link to comment Share on other sites More sharing options...
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