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Class Information
Number: 4/423
Name: Baths, closets, sinks, and spittoons > Flush closet > Bowl > Siphon discharge > With flush valve > With vacuum breaker
Description: Subject matter wherein the valve includes means to break a vacuum to prevent back siphonage or reverse flow.

Patents under this class:

Patent Number Title Of Patent Date Issued
7721359 Vacuum breaker, and water-feed valve assembly and water closet provided therewith May. 25, 2010
5875499 Recreational vehicle toilet with flush nozzle deflector shield Mar. 2, 1999
4672690 Vacuum tank construction for self-contained sewage handling apparatus Jun. 16, 1987

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