11 Apparatus for water supply and sanitary purposes including bath fittings, bath installations, bath plumbing fixtures, boiler pipes [tubes] for heating installations, fittings (bath-), flushing apparatus, flushing tanks, gas pipes (regulating and safety accessories for-), pipe line cocks [spigots], pipes [parts of sanitary installations], regulating accessories for water or gas apparatus and pipes, regulating and safety accessories for gas pipes, regulating and safety accessories for water apparatus, safety accessories for water or gas apparatus and pipes, taps [cocks, spigots] [faucets (am)] for pipes, taps [faucets], valves (level controlling-) in tanks, washers for water taps, water conduits installations, water distribution installations, water filtering apparatus, water flushing installations, water intake apparatus, water or gas apparatus and pipes (regulating accessories for-), water or gas apparatus and pipes (safety accessories for-), water supply installations, water-pipes for sanitary installations, watering installations, automatic, water intake apparatus, water or gas apparatus and pipes (regulating accessories for-), apparatus for water supply and sanitary purposes, pipes; seepage filters for water purification installations; rainwater purifiers of plastic for fitting in drainpipes; underground and overground rainwater filtering installations, not of metal; sewage purification installations; air filters [parts of household or industrial installations]; water filters [parts of household or industrial installations]; throttle devices of plastic for regulating water drainage in waste water treatment installations; sewage treatment installations; water purifying apparatus and machines; water intake apparatus; water collecting apparatus; heating installations; heat accumulators; automatic temperature regulators [thermostatic valves] for central heating radiators; control units [thermostatic valves] for heating installations; plastic pipes for heating and sanitary purposes; radiator caps.