Certain exemplary embodiments can provide a system, machine, device, and/or manufacture that is configured for operably releasing condensate from a condensate producing system to a drain without allowing a substantial quantity of air to enter the condensate producing system from the drain or a substantial quantity of air to exit the condensate producing system to the drain.

In a steam trap comprising a seat valve that is adapted to be switched over between an open position for a first discharge state with large throughput and a closed position for a second discharge state with small throughput, the closure element and the seat of the seat valve define, at the closed position, a two-part passage, said passage having a jet cross-section, which first decreases in size in the discharge direction and, subsequently, re-increases in size, and being delimited by the seating area, the sealing face and at least one, only local control groove in the sealing face and/or the seating area. In the aseptic double seated valve the steam trap serves to carry out a flushing cycle as well as a sterilization cycle in a filling plant.

A steam trap is provided comprising a housing having formed therein a seat for a closure element between a steam and/or condensate inlet and an outlet, the closure element being adapted to be switched between a closed position in the seat and an open position raised from the seat, an annular gap is formed upstream of the seat in the final phase of the switching movement to the closed position and at the end position of the closed position, said annular gap being used for at least pre-filtering condensate and preventing particles from getting stuck in the seat as well as clogging of a nozzle.

A drain valve including a housing having a float chamber, a piston chamber, and a plenum communicating with the piston chamber through a seat. The housing has a liquid inlet passage, and an outlet port. The drain valve has a tube passage communicating with the piston chamber. The drain valve includes an annular float. The drain valve includes a seal body connected to the float and rising away from the tube passage when liquid is in the float chamber. The drain valve includes a piston slidably mounted in the piston chamber having a head that moves away from the seat when gas enters the piston chamber. The piston includes a valve element that moves as the piston head moves to expose the liquid inlet port and allow liquid to flow from the liquid inlet passage through the plenum and into the liquid outlet passage.

A drain valve including a housing having a float chamber, a piston chamber, and a plenum communicating with the piston chamber through a seat. The housing has a liquid inlet passage, and an outlet port. The drain valve has a tube passage communicating with the piston chamber. The drain valve includes an annular float. The drain valve includes a seal body connected to the float and rising away from the tube passage when liquid is in the float chamber. The drain valve includes a piston slidably mounted in the piston chamber having a head that moves away from the seat when gas enters the piston chamber. The piston includes a valve element that moves as the piston head moves to expose the liquid inlet port and allow liquid to flow from the liquid inlet passage through the plenum and into the liquid outlet passage.

A condensate trap apparatus according to the present invention comprises: an inlet hole for inflowing a condensate; a storage space for storing the condensate introduced from the inlet hole; an outlet unit including a discharge hole for discharging the stored condensate from the storage space; and a buoyant body including a closing portion which is convex vertically downward so as to close the discharge hole by being seated on the outlet unit, and a support of a pillar type extending vertically upward from the closing portion.

A control fitting is disclosed for controlling the flow-through of fluids, in particular a condensate drain for discharging liquid condensate, with a housing with an inlet flange and an outlet flange, and a sensor device fastened to the housing for monitoring the operating state of the control fitting, wherein the sensor device has a coupling assembly for coupling to the housing. The sensor device has a sensor for detecting structure-borne sound, and the coupling assembly is connected in a positive and/or non-positive manner to the sensor and is configured for establishing a releasable, positive and/or non-positive connection to the housing, in order to conduct the structure-borne sound of the housing to the sensor in the mounted state. A sensor device for such a control fitting and a method for detecting a state or a blockage and/or leakage of a flow path are also disclosed.