I have a mefaflo cylinder with the internal air bubble which seems to need regenerating every 4 months or so. It takes ages to do this (probably because its on the ground floor of a bungalow and the level of the lowest tap is barely below the level of the tank). Its a pain in the arse job and I wonder if its possible just to forget about the internal bubble and have someone plumb in a 'normal' expansion vessel?
Megaflo - External Expansion Vessel Feasible?
- Thread starter ub7rm
- Start date
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It's preferable when you're in an area where the water absorbs the air gap as often as yours does. Trouble is you can't remove the drop tube on a Megaflo to regain the capacity of the cylinder by fully flooding it.
Thanks. Will look into it.
I noticed something odd when I recharge it as well. I usually do it when the tank has run cold, so as not to waste any hot water. But after a while the dribble that comes out of the tap turns hot. Does this mean that the lack of air bubble is preventing access to hot water in the bottom of the tank in some way?
I noticed something odd when I recharge it as well. I usually do it when the tank has run cold, so as not to waste any hot water. But after a while the dribble that comes out of the tap turns hot. Does this mean that the lack of air bubble is preventing access to hot water in the bottom of the tank in some way?
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Mind it needs to be a G3 (UVHW) qualified 'someone' that should be fitting it as it's a safety feature of the un-vented cylinder. Might be an idea to get it serviced at the same time.
Not the hot water at the bottom of the tank, more like at the top. As the air bubble is used up the water level rises above the end of the dip tube and when you re-introduce the bubble the level of the water drops in the cylinder. As the hotter water is at the top of the cylinder it will be pushed down towards the dip tube and then out to the taps.
Not the hot water at the bottom of the tank, more like at the top. As the air bubble is used up the water level rises above the end of the dip tube and when you re-introduce the bubble the level of the water drops in the cylinder. As the hotter water is at the top of the cylinder it will be pushed down towards the dip tube and then out to the taps.
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