Hello,
I've heard competing views regarding the minimum pressure and/or flow rates for unvented cylinders.
A plumber has offered to install one in my home. The pressure from the mains has been tested and comes to around 4 bars... but delivers only around 8 litres per minute (have tested all downstairs + outdoors taps).
Various manufacturers of unvented cylinders seem to indicate a minimum flow rate of 20ltr/minute. And yet it has been suggested to me by a number of sources (including a plumber) that an unvented cylinder should still perform okay given the 4 bar pressure.
Does anyone have experience or strong views either way on this?
Relatedly, I had some work done on the kitchen recently which revealed what seems to be an additional two stopcocks (see picture below). I guess these *may* be the cause of the reduced flow but... presumably the real cause could equally be narrow pipes elsewhere / underground, that I cannot possibly do anything about.
Thanks for any thoughts
I've heard competing views regarding the minimum pressure and/or flow rates for unvented cylinders.
A plumber has offered to install one in my home. The pressure from the mains has been tested and comes to around 4 bars... but delivers only around 8 litres per minute (have tested all downstairs + outdoors taps).
Various manufacturers of unvented cylinders seem to indicate a minimum flow rate of 20ltr/minute. And yet it has been suggested to me by a number of sources (including a plumber) that an unvented cylinder should still perform okay given the 4 bar pressure.
Does anyone have experience or strong views either way on this?
Relatedly, I had some work done on the kitchen recently which revealed what seems to be an additional two stopcocks (see picture below). I guess these *may* be the cause of the reduced flow but... presumably the real cause could equally be narrow pipes elsewhere / underground, that I cannot possibly do anything about.
Thanks for any thoughts