A pressure regulator
One of these:
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Reliance Valves Adjustable Pressure Reducing Valve with Gauge
• Adjustable between 1 and 6 bar• Complete with both gauge and blanking plug• Suitable for both hot and cold water applications• Integral strainer protects the valve from possible system debris and dirtwww.toolstation.com
A 22mm one is also available depending on your incomer.
I would add a note of caution however. I fitted one when I put the water softener in and whilst it does reduce the ultimate pressure, it also reduces the flow which is PITA when I try and fill a kettle when Mrs RWD is runniung a bath!
Doesnt help in your case, but can't he fit the regulator to the shower feed only, which will avoid that problem? Drop the pressure for the shower but leave everything else as is?




