11 Apparatus and installations for heating, steam generating, ventilating, water supply, water distribution and sanitary purposes and installations, parts and fittings for the aforesaid goods; sanitary installations; apparatus and installations for waste pipes, namely, pipe networks for removing waste water; floor heating installations, water supply systems, ventilating systems, cooling systems, sprinkler and irrigation systems, wastewater treatment installations, wastewater treatment systems, ground heating systems, water supply installations; pre-insulation piping systems, namely, for local heat and sanitary water distribution systems; snow and ice removal systems, namely, underground piping installations for melting snow and ice on the ground; pressure pipe systems, namely, for water and district heat distribution; parts and fittings for the aforesaid goods and systems; filters for drinking water; pipe line cocks [spigots]; pipes [parts of sanitary installations]; radiator caps; regulating accessories for water or gas apparatus and pipes; taps [faucets]; thermostatic valves [parts of heating installations]; water-pipes for sanitary installations; faucets for pipes