Abstract: A condensate pan for a condensing furnace includes a main chamber to receive exhaust gases, a condensate trap separate from the main chamber and internal the condensate pan and a main drain.

Abstract: A cuff pressure stabilizer includes two or more columnar units, which include respective input columns and respective output columns disposed at least partially alongside the respective input columns. The input column of an upstream-most columnar unit is shaped so as to define an upstream-most input port, which is coupleable in fluid communication with an inflation lumen proximal port of a catheter. The output column of a downstream-most columnar unit is shaped so as to define an atmosphere port that is open to the atmosphere. The columnar units include a measurement columnar unit, which includes a plurality of pressure indicia markings distributed along the measurement columnar unit for measuring a height difference between a surface level of the liquid in the measurement output column of the measurement columnar unit and a surface level of the liquid in the measurement input column of the measurement columnar unit.

Abstract: A method and apparatus are provided for reducing the oxygen content drawn from the atmosphere that enters the insulating fluid-containing expansion vessel of high-voltage systems. The apparatus is provided with inner and outer tanks that include a liquid that provides a diffusion barrier for capturing oxygen from the atmosphere. The tanks are in communication with the atmosphere on one side of the barrier and in communication with the expansion vessel on the other side of the barrier. Further provided is a moisture-capturing dehumidifier upstream of the diffusion barrier to dry the gas passing into the expansion vessel. The apparatus limits degradation of the insulation system caused by moisture and oxygen, thereby increasing the life span of the high-voltage system.

Abstract: Apparatus incorporating a water trap allows vent air to flow into a sewer system under low pressure differential conditions and allows gaseous emissions from the sewer system to exit the vent pipe only under greater differential pressure conditions.

Abstract: A method and apparatus for changing the speed of a drill bit down hole in a fluid-actuated motor, including a positive displacement motor and a hydraulic motor, is disclosed. The apparatus comprises a bypass valve installed in the motor for controlling flow through and around the power section of the motor. When closed, the bypass valve forces all fluid to flow through the power section of the motor, imparting maximum speed to the drill bit. When opened, a portion of the fluid flow is allowed to flow around the power section of the motor, thereby reducing the speed of the drill bit. The bypass valve may be opened or closed mechanically, electrically, hydraulically, pneumatically, or by any other means, including a removable plug.

Abstract: System and method for continuously monitoring the wet bulb temperature in a flue gas stream, for example, at the inlet of a spray dryer. A sample of the flue gas is filtered and reheated to substantially the same temperature as the gas in the flue. The temperature of the reheated sample is measured with a sensor surrounded by a liquid absorbant wick, immersed in liquid maintained at a substantially constant level in a reservoir.

Abstract: A pressure relief device for a process or pipeline including a vertical column, preferably open to the atmosphere near the top, having a certain level of liquid therein and a conduit loop in fluid communication with the column and attached to the column near the bottom of the column and generally extending upward to a predetermined distance from the bottom to a point wherein the conduit is in fluid communication with the pipeline, the conduit having a certain level of liquid which is dependent upon the column liquid level, the pressure in the pipeline, and the density of the liquid, the column having a diameter and height large enough to prevent entrainment of the liquid when the pressure in the pipeline is relieving.

Abstract: A toilet has a toilet bowl and a flushing tank which accommodates a supply of flushing liquid for the bowl. The bowl, which discharges into a waste line, is connected to the flushing tank by a flushing pipe. A second pipe for evacuating odors from the bowl likewise leads from the bowl to the tank. This evacuating pipe has an open end in the bottom of the bowl and a second end in the tank. An air duct hooked into the waste line also extends into the tank and can be caused to communicate with the evacuating pipe when the toilet is in use. The air duct is provided with a blower which functions to convey odors from the bowl to the waste line via the evacuating pipe, flushing tank and air duct. A liquid seal cuts off communication between the air duct and evacuating pipe when the toilet is not in use to prevent backflow of odors from the waste line to the bowl. The liquid seal is located in the flushing tank and is established using the flushing liquid accommodated by the same.

Abstract: A dip tube, being a branch line from a gas pressure line, extends into a liquid in a vented bubble pot. The bubble pot comprises a precision bore vessel containing a displaceable body with an actuator, preferably a stepping motor, for moving the body arranged outside the pot. Displacement of the body changes the liquid level in the vessel to thereby regulate the pressure in the gas pressure line.

Abstract: The subject of this invention is a liquid seal vent, identified further in this specification as a "device", for use on a gas-blanketed liquid storage tank in safety-related applications where, due to safety reasons, the "device" must be functional even after it is hit by an external missile. The external missle is understood to be an airborne object; such as a telephone pole, piece of a ruptured pipe, or other objects which are routinely considered in the design of safety-related installations such as nuclear power plants.The "device" contains sealing liquid, which is same or similar as the liquid in the tank. Besides providing a liquid seal, which is automatically maintained by a level control valve, the "device" automatically maintains the liquid in the tank's overflow pipe liquid seal.The "device" automatically relieves the overpressure or vacuum in the tank and is specially designed to minimize the magnitude of vacuum that can develop inside the tank.

Abstract: A multi-port, fluid-activated valve mechanism in which positive pressures of control fluids are used to sequentially actuate fluids which seal respective valve ports sequentially. Fritted glass and liquid metals impervious to fritted glass are used as valving means.

Abstract: An arrangement to counteract or prevent spreading of fire, smoke or undesired gases through at least one passage, such as a ventilating duct, in a building. Said arrangement comprises a device adapted to keep the passage open normally but to close the passage when there is a risk of said spreading to occur. Said passage comprises at least one portion running in a drain trap-like path and said device comprises at least one supply means to supply, when there is a risk of said spreading to occur, a fluid to said drain trap-like portion in order to completely or partly fill the same while providing said closure of the passage.

Abstract: A liquid seal valve, intended in particlar to form part of an inert gas system for supplying inert gas to a storage tank in which liquid fuel may be stored, comprises a first vessel having a gas outlet therefrom, and a gas inlet pipe extending downwardly into a second vessel containing a liquid trap, the lower end of the gas inlet pipe being disposed below the level of the surface of the liquid trap when there is no gas flow through the gas inlet pipe. The second vessel communicates, in a region above the level of the surface of the liquid trap, with the first vessel, whereby gas entering the valve via the gas inlet pipe can flow via the second vessel to the gas outlet in the first vessel. Pipe means provides communication between the lower end of the gas inlet pipe and at least two regions in the first vessel, of which at least one is below and at least one is above the level of the surface of the liquid trap when no gas flows through the gas inlet pipe.

Abstract: An arrangement to counteract or prevent spreading of fire, smoke or undesired gases through at least one passage, such as a ventilating duct, in a building. Said arrangement comprises a device adapted to keep the passage open normally but to close the passage when there is a risk of said spreading to occur. Said passage comprises at least one portion running in a drain trap-like path and said device comprises at least one supply means to supply, when there is a risk of said spreading to occur, a fluid to said drain trap-like portion in order to completely or partly fill the same while providing said closure of the passage.

Abstract: Excess steam pressure is relieved by displacement of a column of water through a vertical conduit opening a path for escape of steam through a space normally occupied by the water which normally acts as a seal. Under reversed conditions, air enters when the water is moved out of its sealing location by vacuum. The pressure vacuum breaker disclosed replaces flapper valves commonly used for pressure relief in paper making applications and has no moving mechanical parts.

Abstract: A wet seal standpipe cap to eliminate standpipe cap leakage includes a generally circular cap which has affixed to the underside of the cap a plurality of baffle rings. The cap is sized to enclose an opening in the top of a standpipe, and permit one of the baffle rings to penetrate a liquor contained in a canal placed around the standpipe opening providing a wet seal. The cap, in cooperation with the canal, entraps any leakage from around the standpipe opening between one of the baffle rings, underside of the cap and contained liquor.

Abstract: A sealant system for slide valves used in analysis apparatus and the like in which the slide valves are formed with a channel between the ports in the valve block and the outside thereof, with a sealant liquid supplied under a slight pressure to the channel to seal and lubricate the valve and prevent sticking even after long periods of idleness. The apparatus used to pressurize the sealant liquid is at the same time used to generate a flow of water through a heat exchanger used in the kinetic analysis apparatus.

Abstract: A liquid seal for use with low pressure gas lines. It has a U-shaped conduit and an associated reservoir with the sealing liquid therein connected to the bottom of the U. The reservoir has an overflow to maintain a desired level in the U-conduit under static conditions. The top of the reservoir is closed and is connected by a pneumatic line to a valve so that it may be connected alternatively to the down stream side of the gas seal or to the suction side of the pump which circulates the gas in the line.

Abstract: A liquid closure device for gas conduits includes a substantially vertically disposed gas inlet conduit extending into a container. A fluid inlet and fluid outlet having regulating valves are provided for the container. An efflux outlet means on the container includes a siphon with the arrangement being such that an orifice on the efflux outlet means is located above an orifice located at the lower end portion of the gas inlet conduit.