Abstract: A piston (36) divides the valve interior into a main chamber (38) and a sensing chamber (40). A fixed valve seat (26) sealingly engages the piston (36) to close communication between the chambers (38, 40). The seat (26) is carried by an axial stem (20) which extends through an opening (42) in the piston (36). The valve inlet (14) extends through a passageway (22) in the stem (20) into the main chamber (38). An outlet (28) is formed in the main chamber (38). A valve element (62) closes the outlet (28). When pressure is higher in the main chamber (38) than in the sensing chamber (40), the piston moves toward the sensing chamber (40) to open communication between the chambers (38, 40). When there is a pressure drop in the main chamber (38), the piston (36) moves toward the main chamber (38) to open communication between the chambers ( 38, 40) and move the valve element (62) into an open position.

Abstract: An improved pulse-jet air cleaner (10) includes an aspirator (32) with a tube (34) extending between a point in the tank (12) where moisture tends to collect, and a point in predetermined spaced relationship adjacent the tank outlet (20) where the airflow is of high velocity and low pressure upon actuation of the pulse valve (24) so that any moisture is automatically discharged through the valve and nozzle (26) on a substantially continuous basis without operator attention or interruption of operation of the air cleaner system.

Abstract: An integral valve and tank assembly (12) for a pulse-jet air cleaner includes a discharge pipe (22) connected to and extending directly into a tank (14). The inlet end (28) of the discharge pipe (22) terminates adjacent to a relatively larger opening (30) in the tank wall (14b), over which a diaphragm assembly (32), cover (34), and compression spring (38) are mounted so as to provide improved constructional and operational efficiency.

Abstract: A ventilator for use with an internal combustion engine includes an oil sump located at the lower end of the vertically extending outlet tube of the ventilator, a check valve disposed at the bottom of the sump for allowing fluid to flow from the sump toward the pressure chamber of the ventilator, and an outlet port extending out through the side wall of the outlet tube. The outlet tube is in communication with an intake manifold via the outlet port. The oil sump cooperates with the check valve to prevent oil from flowing into the intake manifold through the outlet port.

Abstract: A drain valve has a construction such that ascent and descent of a drain valve head for opening and closing a discharge port are effected by a combination of two coiled springs, one of which is made of a shape memory effect alloy. The drain valve head is supported so that it is capable of ascending and descending by an inside and outside dual structure of attachment of the two springs alone. Thus, it is made possible to simplify a drain valve construction and to miniaturize a drain valve per se.

Abstract: Solenoid operated condensate drain valve arrangements for steam systems are described having the following features:(a) powered by electromotive force obtained by the Seebeck effect;(b) where electrical sensing probe means control operation of the arrangement, the provision of thermal switch means overriding the action of the probe means and enabling air to escape from the system under start-up conditions;(c) provision of a monitoring circuit that allows escape of trapped steam which may be having a steam locking effect;(d) provision of a monitoring circuit that gives a measure of automatic drainage in the event of some failure in the drain valve arrangement.

Abstract: A condensate discharging apparatus has a housing formed therein with a condensate reservoir chamber and with an inlet port and an outlet port both communicated with said reservoir chamber through a valve chest, a rotary valve disposed rotatably within the valve chest and having a valve port for communicating the reservoir chamber alternatively with either the inlet port or the outlet port, and a motor for rotating the rotary valve. Within the condensate reservoir chamber, a tube is attached to the lower portion of a body of the housing for communicating between the valve chest and the lower portion of the drain reservoir chamber, so as to discharge the condensate in the lower portion of the reservoir chamber to the outside through the outlet port.

Abstract: The invention comprises a valve contained in a drainage line from a compressor tank and a control for operating the valve. The control includes a timer which comprises an air storage tank, an air bleed valve for bleeding the storage tank and structure for operating the valve in response to air pressure received from the air storage tank. The timer operator is initiated in response to deactivation of the compressor motor.

Abstract: An improvement on U.S. Pat. No. 4,058,240 in which the condensate is collected in cavities in the valve member having open ends on opposite sides of a plane normal to the valve member and perpendicular to its axis of rotation. The inner ends of the cavities intersect a vent opening extending along the axis of the valve member. The material of the valve member between the cavities provides better support for the valve seals. The vent provides more rapid drainage of the cavities so the cavities are substantially completely emptied each revolution, thereby increasing the drainage capacity of the device. The ball valve member could be hollow, in which case the entire interior of the ball would be available for collecting condensate.

Abstract: The drainage device includes a drainage chamber (9) which communicates via an inlet pipe (20) with a compressed air tank and is provided with an outlet orifice (16), elements (5,24) for closing the outlet orifice and elements (5,19,1,21) for opening the outlet orifice while partially closing off the inlet pipe. Application to gas-blast circuit breaker installations.

Abstract: A solenoid-actuated drain valve for a compressed gas reservoir of a diesel locomotive in which the valve element is a differential piston exposed on opposite faces to reservoir pressure for normally holding the valve closed and minimizing the opening force required to be exerted by the solenoid, a temperature-responsive heating element protects the valve against freezing, a sensing element senses accumulations of water from the compressed gas in the reservoir, and actuation of the heater and energizing of the solenoid for opening the valve are both controlled by a solid state circuit which prevents opening of the valve except when the sensing element senses accumulated water.

Abstract: In a drain device for purging compressed air lines of water, oil, sludge, and other contaminants by the alignment of a first pair of apertures in a valving mechanism to allow the contaminants to enter a central chamber and periodically moving the central chamber to align a second pair of apertures to allow the contaminants to flow from the chamber, a pair of seals are provided for sealing each of the pairs of apertures. One seal is concentric with the one aperture in order that, with the apertures aligned, the seal will prevent leakage into or from the interior of the housing. A second seal encircles the first seal and extends radially away from the first seal in a direction coincident with the movement of the chamber portion which causes misalignment of the apertures. Accordingly, the second seal prevents escape of contaminants from the misaligned apertures while the first and second seals cooperate in the misaligned mode to prevent communication of the two apertures.

Abstract: In a vehicle driven by a diesel engine, a sensor is activated by an accumulation of water in the fuel tank and another sensor is activated when the engine temperature is at a level, less than normal operating level, indicating that the vehicle and its fuel tank have been stationary for a period sufficient to permit separation of the fuel from the water in the tank. A solenoid is energized upon activation of both sensors and opens a drain valve to permit the water to be drained from the tank.

Abstract: Valve for separating liquids out of gases, as in gas-well-to-customer operations, being an improvement of the valve described in our U.S. Pat. No. 3,769,999 of Nov. 6, 1973, entitled "Liquid Separator System and Apparatus". The valve comprises a body with enlarged inlet chamber, a rising passage communicating therewith, a circumferential groove about the rising passage, downwardly-extending passages spaced on opposite sides of the rising passage and extending to an outlet chamber. The valve includes a head chamber with floating disc positioned within the same and seating atop the rising passage and circumferential groove, the floating disc being provided on the underside thereof with a radial groove to bleed off fluid in the head chamber and one or more further grooves to control fluid coming from the rising passage.

Abstract: Disclosed is an electrically operated condensate drain valve arrangement for draining condensate from a fluid transfer system, the arrangement comprising a condensate drain valve (3), an electronic circuit (5 or 21) for controlling operation of the valve, and at least one sensing element (1 or 19 and 20) for insertion in the fluid transfer system to trigger the electronic circuit for operating the valve when a predetermined condition in the system is sensed by the sensing element; the electronic circuit including a delay means (10) imparting a desired minimum period between successive particular operations of the valve. In one use the predetermined condition is that condensate level is below the sensing element and the circuit is triggered to close the valve when this condition is sensed.

Abstract: An injector apparatus for injecting starting fluid into the cylinders of an internal combustion engine can be operated by an on-board compressed air system of a vehicle. A reserve air tank provides air to operate a fuel delivery mechanism so that the injector can function in the absence of air pressure in the system.Preferably, the vehicle has two air systems, a first for the starter and a second, which may be connected to the brakes, that supplies air to operate the injector. A control valve of the injector is responsive to pressure in the first system for synchronization purposes.

Abstract: An automatic drain exhaust valve (1) for draining water and the like from a pressurized gas system includes a housing (1') defining an inlet orifice (5), an intermediary space (8), and an outlet orifice (6). Valve surfaces (30 and 40) respectively close the inlet and outlet orifices (5 and 6), said valve surfaces (30 and 40) being respectively moved to open positions by gas pressure from the pressurized gas system acting on surfaces of valve actuators such as pistons (3 and 4). One valve surface (30) is moved to a closed position by springs operating on the piston (3) while the other valve surface (40) is moved to a closed position by fluid pressure from the intermediary space (8) acting on a relatively large surface area (42) of the piston (4).

Abstract: A primer valve for sewer line drain traps comprises a case having an upper water inlet communicating with the pressurized house line and a lower water outlet communicating with the trap. The hollow interior of the case is divided into a lower valved dispensing chamber which dispenses water into the trap; an intermediate supply chamber which supplies water to the primer valve system, and an upper trapped-air chamber. The latter actuates the valve in the dispensing chamber and dispenses water to the trap each time the pressure in the house line drops.

Abstract: A drain device that removes oil, water, sludge and other contaminants from compressed air systems comprising a cylindrical housing for attachment between diametrically opposed compressed air and drain lines, a cylindrical rotor rotatably journalled within the housing, a single port, at least as large as the inside diameter of the air line, through the wall of the rotor, the port being positioned for sequential alignment with the air and drain lines, when the rotor is actuated and a pair of bleeder valves between the interior chamber of the rotor and the atmosphere including respective cam tracks positioned on end walls of the rotor and housing to open the valves when the rotor port is aligned with the discharge line.

Abstract: A moisture collecting pocket is provided in cummunication with the lowest portion of an actuating chamber of an air actuated system wherein compressed air is alternately introduced into and exhausted from the actuating chamber. A valve device is disposed within the pocket and has a restricted flow path formed therein from the pocket through the valve device when it is in an opened position with the valve device being movable to a closed position blocking the flow path each time compressed air is introduced into the actuating chamber.

Abstract: An assembly connectable between a compressor and reservoir, having a filter unit capable of centrifugally cooling and separating condensed moisture and other contaminants from compressed air and discharging clean air in saturated condition at the outlet temperature and pressure, the unit being connected to the compressor through an inlet valve opening when the compressor begins pumping and to the reservoir through a pressure regulator valve adjustable to open only when the air in the unit reaches a predetermined pressure, which, for minimizing the absolute moisture content of the clean air passed to the reservoir, usually will be substantially maximum reservoir pressure.

Abstract: An automatic drain valve device alternatively adaptable for use in compressor systems using either electrical or pneumatic controls for cutting out and cutting in the compressor, and being operable to provide a drain operation twice during each cycle of compressor operation, that is, once when the compressor is cut out and again when the compressor is cut in. A manually operable lever on the valve devices provides for manual operation of the drain valve device at will and independently of the pneumatic and electrical controls.

Abstract: This disclosure deals with an air cooler and cleaner which receives compressed air coming from an air compressor and removes the moisture content, lubricant oil, solid particles and other contaminants which may be entrained in the air. The air cooler and cleaner includes a tubular metal housing, an upper housing closure and a lower housing closure. Sheet metal cooling fins having housing-receiving openings and cylindrical spacer and heat-conductor collars around said openings are heat shrunk onto the housing in firm thermally conductive contact therewith, the fins being in spaced relation to each other. A swirl chamber is provided in the lower portion of the housing and a cooling chamber is provided in the upper portion of the housing. The swirl chamber has a tangential air inlet for rapidly spinning the air therein. An inverted cylindrical cup-like air director is mounted within the cooling chamber for directing the air against and along the wall of the cooling chamber in a thin layer.

Abstract: A flow-reversing, regenerative, desiccant air dryer system absorbs moisture, oil droplets, and carbon particles from the incoming air during compression in a compressed air system. Once sufficient air pressure has been attained in an air pressure reservoir, control valves direct the flow of atmospheric-pressure air, heated by passing through the warm compressor cylinder, in a reverse direction through the air dryer. The reverse flow of heated, atmospheric pressure air both purges the trapped oil, carbon particles, and condensed liquid water and removes the moisture from the desiccant.

Abstract: Apparatus for draining a condensate from a steam-containing system. A cascade section is adapted for connection to or into the system and provides two throttle points with a pressure chamber therebetween and a valve body disposed in the pressure chamber, same being sensitive to any changes in the physical nature of the medium in the cascade section between the vapor and liquid phases so as to be effective to open the cascade section and permit a liquid flow and yet prevent a vapor flow therethrough.

Abstract: A condensate valve comprising a housing having a chamber for the accumulation of liquid and an outlet passage from the chamber leading to a central chamber from which liquid is discharged to the atmosphere. A double-acting valve member controls the outlet passage. A diaphragm closes the central chamber and separates it from a pressure chamber. A manually operable device is provided for holding the valve member in a shut-off position or in a position to drain the condensate valve. A separate annular heater assembly is disposed upon the housing in encircling relation to the liquid accumulation chamber to prevent freezing.

Abstract: The specification discloses drain valve apparatus for automatically draining condensed moisture from tubing, such as tubing connected to a respirator or nebulizer, without admitting ambient air to the tubing. One embodiment of drain valve apparatus comprises a casing of transparent plastic material having a chamber from which condensed moisture flows to atmosphere. A diaphragm valve, of the bulb-type, is biased to seated position to prevent admittance of ambient air to the tubing and opens only responsively to a certain weight of accumulated moisture active thereon to allow moisture to enter the chamber. In a second embodiment, a diaphragm valve is activated to seated position by a second bulb-type diaphragm connected thereto and subject to the pressure in the tubing. Also, a check valve prevents back flow of ambient air to the tubing under negative pressure conditions in the tubing.

Abstract: A package which comprises a conventional sheet metal can having a bottom and top which is joined to a tubular body by means of peripheral crimps about the periphery of the top and bottom is provided wherein a flexible plastic foam is disposed beneath the ends of the container and between the container and the crimped edge portions. The foam provides a seal in the regions of the crimping and acts as a retainer for particulate material within the package. The construction is particularly useful for imbiber bead valves.

Abstract: An air cooler and cleaner for cooling compressed-air coming from an air-compressor and for removing the moisture content thereof and for removing lubricant oil and solid particles and other contaminants which may be entrained therein. The air cooler and cleaner includes a tubular aluminum housing and an upper housing-closure and a lower housing-closure. Sheet-aluminum cooling fins having housing-receiving openings and cylindrical spacer and heat-conductor collars around said openings heat-shrunk onto the housing in firm thermally-conductive contact therewith and spacing the fins in relation to each other. A swirl-chamber in the lower portion of the housing and a cooling-chamber in the upper portion of the housing. The swirl-chamber has a tangential air-inlet for rapidly spinning the air therein. An inverted cylindrical cup-like air-director within the cooling-chamber for directing the air against and along the wall of the cooling-chamber in a thin layer.