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Class Information
Number: 236/53
Name: Automatic temperature and humidity regulation > Traps > Float valve > Thermostatic air valve
Description: Automatic steam-traps in which the water-drain valve is float-operated, but which are provided with a thermostatically-controlled air-vent.

Patents under this class:

Patent Number Title Of Patent Date Issued
4635672 Air vent Jan. 13, 1987
4545397 Float valve assembly Oct. 8, 1985
4440144 Heater apparatus and method Apr. 3, 1984
4300719 Steam traps Nov. 17, 1981

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