Abstract: A steam trap includes a replaceable condensate nozzle cartridge with a through passage forming a venturi nozzle in a straight-line working fluid flow path. The venturi through passage includes a venturi nozzle insert that reduces the pressure of the working fluid to cause the liquid water in the working fluid to flash and restrict the flow of steam through the passage. The condensate nozzle is located in a reduced pressure discharge chamber into which a nozzle outlet discharges water condensate extracted by the nozzle and emptied from a trap outlet. The reduced pressure discharge chamber has an access opening sealed by a removable cover to allow the nozzle cartridge to be removed and replaced if necessary, without removing the steam trap from the process line. Locating the removable nozzle cartridge in a lower pressure region of the steam trap overcomes rating limitations on prior steam traps with replaceable venturi nozzles.

Abstract: A universal insert used with a device to drain condensate from a steam system while minimizing the passage of steam. The insert includes an anchor with tapering threads that can be crushed, permitting the insert to be used with radiator steam traps having differing sizes, and of different models. Nozzle or orifice-type constricted passageways can be located within the anchor. A filter device for use with the anchor has an adjustable height.

Abstract: A flow constriction device, typically for drainage of steam condensate, is provided with a tubular nozzle structure inserted within a bore formed in the body of the device. The insertable tubular nozzle structure provides convenient variation in flow constriction dimensions which can be employed with a generally standardized bore dimension.

Abstract: A flow constriction device, typically for drainage of steam condensate, is provided with a tubular nozzle structure inserted within a bore formed in the body of the device. The insertable tubular nozzle structure provides convenient variation in flow constriction dimensions which can be employed with a generally standardized bore dimension.