Patent ID: 6021803
Filing Date: 2000-02-08
Classification: E03C,G05D,Y10T

Abstract:
A tapping point including a mixer (10) for cold and hot water where the mixer (10) has a hot water inlet (20) arranged to connect to a feed conduit (64) for hot water, a cold water inlet (40) arranged to connect to a feed conduit (70) for cold water, a mixing chamber (32) for mixing hot water introduced through the hot water inlet (20) with cold water introduced through the cold water inlet (40), a space for hot water (22) between the hot water inlet and the mixing chamber (32), a space for cold water (42) between the cold water inlet (40) and the mixing chamber (32), a mixer outlet (34) for mixed water from the mixing chamber (32), and first valve means (30,36,50) arranged so that in an open mixing position, it allows cold water and hot water to enter into the mixing chamber (32) from their respective spaces (22,42) and allows their exit as mixed water from the mixer outlet (34) characterised in that the mixer (10) additionally has a hot water outlet (24) from the hot water space (22), where the hot water outlet (24) is arranged so that in the closed mixer position, it is connected with a return conduit (66) for the hot water via second valve means (26), and in this closed mixer position, allows the circulation of hot water through the hot water space (22).