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Class Information
Number: 236/56
Name: Automatic temperature and humidity regulation > Traps > Thermostatic > Expanding fluid
Description: Automatic steam-traps in which the drain-valve is directly operated by a thermostat of the expanding-fluid type.

Sub-classes under this class:

Class Number Class Name Patents
236/57 Bourdon type 3
236/58 Wafer type 22

Patents under this class:

Patent Number Title Of Patent Date Issued
6722632 Thermally operated valve containing liquid and filler for automatically modulating the flow of fluids Apr. 20, 2004
6409147 Thermally operated valve for automatically modulating the flow of fluids Jun. 25, 2002
6148845 Valve housing with a connecting part and a cap Nov. 21, 2000
5526980 Condensate traps Jun. 18, 1996
4792090 Thermostatic steam traps Dec. 20, 1988
4681256 Thermostatic steam traps Jul. 21, 1987
4679727 Thermostatic steam trap with self-centering valve Jul. 14, 1987
4586655 Steam trap with thermal control element and method of assembling said trap May. 6, 1986
4529122 Thermostatic steam trap assembly Jul. 16, 1985
4454983 Temperature controlled valve Jun. 19, 1984
4441652 Exchangeable unit steam trap Apr. 10, 1984
4387732 Steam trap including interchangeable body member and insert assembly Jun. 14, 1983
4295605 Steam traps Oct. 20, 1981
4288032 Steam trap including interchangeable body member and insert assembly Sep. 8, 1981
4197990 Electronic drain system Apr. 15, 1980
4161278 Thermally-controlled valve for a steam trap Jul. 17, 1979
4134541 Fluid separation device Jan. 16, 1979
4088113 Wood burning automatic swimming pool heater May. 9, 1978
4037784 Steam trap Jul. 26, 1977
4016901 Thermostatic valve Apr. 12, 1977
4013220 Back-pressure-resistant vapor trap for condensate discharge Mar. 22, 1977

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