Fix Low Pressure Hot Water Taps For Unvented Cylinders 

Can you adjust in situ the combi valve or have to remove it normally.

Well done my brother, next time count the main pressure and divide that by two , otherwise hot side overpower the cold side or other way around or if you wanted dead on , keep adjusting it and keep using the water gauge meter 😂 from the highest floor of the house , wherever there’s a bath mainly , because some showers are designed to mix manually, and with differential pressure it’s absolute nightmare to balance them out 😅😂🙈 same applies to a mixer showers 😅 sometimes temperature will be lower even mixer bar says 42 Celsius on standard shower .