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.