Abstract: A condensate drain includes a body defining an interior space. An inlet opening is in fluid communication with the interior space of the body for allowing condensate to enter into the interior space, and an outlet opening is in fluid communication with the interior space of the body for allowing condensate to exit the interior space. A float is disposed in the interior space for movement within the interior space relative to the body generally along a float axis between a closed position in which the float blocks fluid communication from the inlet opening to the outlet opening and an open position in which the float permits fluid communication from the inlet opening to the outlet opening. The float is buoyant so that the float is moved to the open position by condensate as condensate fills the interior space of the body. The interior space and the float are sized and shaped so that the float is constrained to substantial alignment with the float axis.

Abstract: A steam restricter adapted to be retrofitted into an existing steam trap having a chamber, an inlet for admitting steam and condensate into the chamber and a drain for draining condensate. The steam restricter includes a body having an inlet passage and a cavity in the body, the inlet passage in the body extending to the cavity. A drain outlet passage extends from the cavity for passing condensate from the cavity to the drain of the steam trap. A thermodynamic stop disk is disposed in the cavity for movement between an open position in which the stop disk permits fluid communication through the cavity from the inlet passage to the outlet passage and a closed position in which the stop disk blocks communication from the inlet passage to the outlet passage. A mating base includes an outlet passage that opens into the steam trap drain.

Abstract: A condensate removal device for removal of condensate from a fluid system. The device includes a body adapted for connection to the fluid system, the body having an inflow opening and an outflow opening. A trap between the inflow opening and the outflow opening restricts flow of fluid to permit the passage of liquid condensate but to inhibit the passage of gas. The trap includes a fixed passageway extending through the trap constructed for continuous fluid communication between the inflow opening and the outflow opening through the trap. A variable passageway extends through the trap, the variable passageway being constructed to selectively permit fluid communication between the inflow opening and outflow opening through the variable passageway in correspondence with the amount of liquid condensate in the fluid system. The device may include a labyrinth path to trap steam and pass condensate and be constructed to promote heat transfer and condensation of steam within the trap.

Abstract: A steam restricter device of the present invention is designed for retrofit to an existing steam trap of the type including a bowl-shaped chamber-defining member having an opening in it for admitting steam and condensate, and a drain for passage of condensate from the chamber to a condensate return. The device includes a body having an upper portion and a lower portion of smaller outer diameter than the upper portion. The lower portion may be slidingly received in the drain without rotation. The body has a nozzle formed in it which is sized to permit passage of condensate, but to inhibit passage of steam. The upper portion has an intake in it which provides communication from the chamber to the nozzle, and the lower portion has an opening in it which provides communication from the nozzle to the condensate return. A generally tubular bushing fits around the lower portion of the body and sealingly engages a wall in the drain for sealing between the lower portion and the wall of the drainage opening.