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Class Information
Number: 137/195
Name: Fluid handling > Diverse fluid containing pressure systems > Fluid separating traps or vents > Discriminating outlet for liquid > With fluid responsive valve > Level responsive > Float > Servo-control
Description: Separating traps wherein the liquid outlet valve is controlled by a servo mechanism or pilot valve operated means which is in turn controlled by the float.

Patents under this class:

Patent Number Title Of Patent Date Issued
8132589 Regulating valve for the discharge of liquid Mar. 13, 2012
6588449 Diesel fuel shut-off device Jul. 8, 2003
6178985 Automatic drain system Jan. 30, 2001
5983919 Automatic drain valve Nov. 16, 1999
5687754 Automatic drain valve with internal pressure booster valve Nov. 18, 1997
5636655 Auto-drainage assembly Jun. 10, 1997
5626163 Auto-drain unit May. 6, 1997
5595210 Auto-drain unit Jan. 21, 1997
5533545 Drain system Jul. 9, 1996
5417237 Automatic drain valve May. 23, 1995
5398716 Structure of air compressor waste drain valve Mar. 21, 1995
5287916 Apparatus and method for disposing liquid effluent from a liquid system Feb. 22, 1994
5121767 Automatic drain valve Jun. 16, 1992
5122167 Free-flow gas filter assembly Jun. 16, 1992
5103855 Automatic condensate draining device for compressed air systems Apr. 14, 1992
5080126 Float controlled valve Jan. 14, 1992
5052426 System for pressure letdown of abrasive slurries Oct. 1, 1991
5014735 Automatic drain valve May. 14, 1991
5004004 Automatic drain valve Apr. 2, 1991
4779640 Automatic drain valve Oct. 25, 1988
4765357 Pilot operated flow control valve for hydraulic systems Aug. 23, 1988
4574829 Automatic drain valve Mar. 11, 1986
4562855 Automatic drain valve Jan. 7, 1986
4444217 Automatic drain trap Apr. 24, 1984
4275755 Steam trap Jun. 30, 1981
4112968 Automatic drain valve for a compressed air system Sep. 12, 1978
4082107 Automatic drain valve for a compressed air system Apr. 4, 1978
4057076 Waste water valve Nov. 8, 1977
3993090 Automatic valving device Nov. 23, 1976
3980457 Pneumatic filter/separator with magnetically controlled fluid valve Sep. 14, 1976
3942499 Carburetor improvement system and apparatus Mar. 9, 1976

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