your barking up the wrong tree and wasting your time on this one.
he comes from essex i'm in erts never mind most of moved over night and changed names.
so you say he hasn't ceased on this forum.
but he's done wrong cause he hasn't been on he for 3 days. must be new reg to me.
i join the forum, god knows why cause in 22 yrs plumbing i never met so many plumbers with a attitude, but that the youth of today.
and i'm now faced with...
well i'm lost to.
just cause he hasn't posted sinse the 29th november er like 3 days ago don't mean he has ceased
not all people are like most of you's they have a life after work and probably happy with their family.
if you think just cause someone don't post for 3 days so they up to...
do agree with you .
i've never done it and probably never would. i always run another cold feed least i know when it's done it's going to work.
and when i've spoke to pump companys they never favour having one on pump and one from the mains even though it's reduced.
but by almeans try it...
the solenoild is where the mains pipe go's into and that is where the filter is.
blocked filters restrict flow but don't cause the shower to make noises unless it's the heater kettling due to restricted flow.
if you find the box look for a kw rating on it.
it will have it on the shower but you'll have to remove the cover to find the label.
but you need to try you filter inside the shower sounds like it's blocking up.
or you may have a dicky solenoild valve.
if you what to use mains cold gravity hot fit a trevi boost shower otherwise you need to run the cold from tank.
i always use salamander pumps or stuart turner pumps not this plastic rubbish you buy down the local diy.
trevi boost uses mains cold to pull the hot through at mains pressure.