While you wait for answers, we may have found some information which could help you.
Click here for Water Hose Pressure Valve
Transformer for old Gainsborough Diplomat pump shower?
Gainsborough 8.5 se hot/ cold water problems ?
Gainsborough 2000x shower?
how do you remove font cover from a gainsborough 9.5kw deluxe electric show?
Gainsborough 8.5e ?
Gainsborough shower?