Abstract: An upstanding generally cylindrical body is provided and includes upper and lower vertically spaced closure walls extending and sealingly secured across the lower end portion of the body. An upwardly opening water receptacle is defined above the upper closure wall and a closed airtight chamber is defined within the body between the upper and lower closure walls. An inverted U-shaped tube has one end thereof secured downwardly through the upper closure wall and the other end has a reverse bend formed therein and includes an upwardly directed terminal end having a tubular valve body supported therefrom.

Abstract: An upstanding generally cylindrical body is provided and includes upper and lower vertically spaced closure walls extending and sealingly secured across the lower end portion of the body. An upwardly opening water receptacle is defined above the upper closure wall and a closed airtight chamber is defined within the body between the upper and lower closure walls. A tubular valve body is supported from and opens through the upper closure wall and has a valve element shiftably supported from the valve body for movement between open and closed positions. A support member is threadedly engaged with the end of the sleeve opening upwardly through the upper closure wall and includes an abutment portion selectively engageable with the valve element to variably displace the latter away from a closed position toward an open position for variably controlling the venting of air from the airtight chamber through the tubular valve body into the receptacle and aerating water disposed therein.