Hi guys...

Just wanted to check.. am having a mixer shower installed.. the plumber says i need to have a pressure reducing valve for my cold as it runs from mains.. however, for this to happen he would need access to the pipes which are behind my newly tiles walls so obviously a problem there.. is it essential i have this valve.. i just had a new combi boiler (worcester 35CDi) put in (not sure if this info is helpful)

thanks in advance

"hkt7383" wrote in message
...

Hi guys...

Just wanted to check.. am having a mixer shower installed.. the plumber
says i need to have a pressure reducing valve for my cold as it runs
from mains.. however, for this to happen he would need access to the
pipes which are behind my newly tiles walls so obviously a problem
there.. is it essential i have this valve.. i just had a new combi
boiler (worcester 35CDi) put in (not sure if this info is helpful)

Hot water from the combi will also be at mains pressure so there would be no
balancing issue.

Neil

is it essential i have this valve.. i just had a new combi
boiler (worcester 35CDi) put in (not sure if this info is helpful)

Have you measured your static pressure? If it is within the spec of the
mixer (usually between 3 and 6 bar max) then you don't need the PRV. Measure
at several times during the day. The static pressure is usually highest at
night, but not if the water company reduces overnight pressure to reduce
leakage.

Christian.

"hkt7383" wrote in message
...

Hi guys...

Just wanted to check.. am having a mixer shower installed.. the plumber
says i need to have a pressure reducing valve for my cold as it runs
from mains.. however, for this to happen he would need access to the
pipes which are behind my newly tiles walls so obviously a problem
there.. is it essential i have this valve.. i just had a new combi
boiler (worcester 35CDi) put in (not sure if this info is helpful)

thanks in advance




--
hkt7383

I would have thought that the need for a pressure reducing valve would be to
equalise the pressure
"if" you had a gravity based hot water system. However, I thought in that
case that both supplies
should come from a tank.

But as you've got a combi, then both supplies should be at mains pressure,
so I wouldn't have
thought a reducing valve would be required unless there are significant
differences in the hot/cold
water pressure.

I have a combi boiler (Grant) and have a mixer bar shower with direct hot
and cold feeds.... works great,
more like a jet wash than a shower!

Andy