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; chilled water installations and apparatus; central heating installations and apparatus; pressurisation units for maintaining the pressure within water systems; solar collectors; solar heating panels; solar powered heating apparatus and installations; under floor heating apparatus and instruments; filtration apparatus for cooling systems, water systems and for heating systems including central heating systems; magnetic filters for use in cooling systems, water systems and for heating systems including central heating systems; apparatus for separating air and also detritus including metal, ferrous material, rust, swarf and dirt from cooling systems, water systems and for heating systems including central heating systems; apparatus for separating detritus including metal, ferrous material, rust, swarf and dirt from cooling systems, water systems and for heating systems including central heating systems; sealed system filling kit; sealed system heating apparatus; apparatus for separating detritus including metal, ferrous material, rust, swarf and dirt from central heating systems and cooling systems; water conditioners; water softeners; parts and fittings for all the aforesaid goods