Apparatus and installations for heating, water circulation, water supply and sanitary purposes; plumbing fixtures, fittings and components; heating components; underfloor heating components; valves, thermostatic mixing valves; radiator valves; shower valves; taps; mixer taps; chilled water installations and apparatus; central heating installations and apparatus; pressurisation units for maintaining the pressure within water systems; solar heating panels; solar powered heating apparatus and installations; magnetic filters for use in central heating systems; water conditioners; water softeners; parts and fittings for all the aforesaid goods.;