Fluid handling – Back flow prevention by vacuum breaking – Air vent in liquid flow line
Patent
1978-08-31
1980-07-15
Michalsky, Gerald A.
Fluid handling
Back flow prevention by vacuum breaking
Air vent in liquid flow line
13724735, 13724743, 137357, 137362, E03C 1295
Patent
active
042123143
ABSTRACT:
The present invention relates to a waste water outlet sanitary plant comprising a siphon forming a water seal to which is connected a waste pipe for connection with sewers and in which an automatic air valve device and a siphon are combined in one single apparatus so that their functions are complementary. A cylindrical body having a permanent water seal and in which a pipe or equivalent connected to an apparatus such as a sink, a basin, or waste outlet is dipping, is combined with an automatic air valve with peripheral air entry. An embodiment of the invention relates to a plant for dwellings in which a series of water outlets are provided at the height of different floors or sub-basements.
REFERENCES:
patent: 202250 (1878-04-01), Dunn et al.
patent: 209975 (1878-11-01), Morey
patent: 539689 (1895-05-01), Knispel
patent: 605202 (1898-06-01), Mullenhoff
patent: 1336280 (1920-04-01), Carroll
patent: 2852034 (1958-09-01), Shames et al.
patent: 3605132 (1971-09-01), Lineback
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