Abstract: In a shut-off or diverter valve, an anti-cavitation valve located downstream of the shut-off or diverter valve member vents an outlet passageway to the atmosphere to minimize cavitation in an outflowing column of water which has suddenly been isolated from the inlet. The anti-cavitation valve may be located in the interior of the shut-off or diverter valve member. When the pressure gradient between atmospheric pressure and the pressure in the just closed outlet passageway exceeds the force exerted by a spring, the anti-cavitation valve opens an air passageway communicating between the atmosphere and the outlet passageway. Part of the air passageway may be in the interior of the push rod of the diverter valve member.

Abstract: A check valve assembly is provided for a liquid storage vessel, such as a tank. The system includes a housing for mounting to the tank. A fluid outlet and an air inlet are provided in the housing. An inlet check valve and an outlet check valve are provided on the housing for selectively venting the tank. An air filter is mounted over the air inlet to remove airborne contaminants. The check valve assembly may include a pressure gauge, a nitrogen source inlet, and an emergency relief valve.

Abstract: An internal gas removal system for a fuel tank is comprised of a venting system and a breathing system, both of which are placed substantially completely inside the fuel tank. The breathing system removes gases from the fuel tank while fuel is introduced into the fuel tank, while the venting system removes gases from the fuel tank while the vehicle is operated and the fuel is not introduced into the fuel tank. Both, the venting and the breathing systems are connected to their respective exit lines which exit the fuel tank through a single dedicated opening or through a filler pipe. A method of making the internal gas removal system comprises introducing the breathing and the venting systems into a blow mold and subsequently blow-molding the fuel tank around these systems.

Abstract: An apparatus for introducing fuel having a volatile hydrocarbon component into an on-board fuel storage tank of an automotive vehicle with reduced discharge of fuel vapors into the surrounding atmosphere, the apparatus including a fuel filler cap having at least one centrally positioned aperture extending therethrough through which a suitably configured fuel directing nozzle can pass. The fuel directing nozzle includes a vapor conveying line located in the interior of the nozzle capable of being brought into fluid communication with a vapor collection chamber located in the fuel filler cap such that, when engaged, a circuit is completed, fuel can be introduced into the on-board fuel storage tank of the automotive vehicle and any fuel vapors generated or displaced during the operation can be returned to the remote storage site or another suitable vapor collection facility remote from the automotive vehicle without contacting the surrounding environment.

Abstract: The invention presented relates to a septic system which doses effluent into a disposal field. More particularly, the invention includes a relatively water-tight walled structure capable of accumulating a volume of septic tank effluent; a disposal field dosing system having at least one outlet conduit having an outlet end and an inlet end; a stand pipe which extends from each of the outlet conduits towards the top of the structure; a float having a chamber having an opening on an upper surface thereof; at least one feed conduit having an inlet end located within the chamber and an outlet end in operative connection with the inlet end of the outlet conduit; and a jointed coupler which forms the operative connection between the feed conduit(s) and outlet conduits.

Abstract: A fluid pressure relief system and method for a pressure vessel or tank (10) having a normal vent (16) with a first pilot operated safety valve (18) and an emergency vent (62) having a second pilot operated safety valve (25). A vapor recovery line (20) is connected to relief valve (18) and collected at a vapor storage container (21). A manway (22) on the pressure vessel (10) shown in FIG. 2 defines the emergency vent (62) and a main valve member (66) has a counterweight (74) thereon to urge main valve member (66) to a seated closed position on nozzle (60). The first pilot operated safety valve (18) for the normal vent (16) is shown in FIG. 7 and has a T-shaped body (142) with a main relief valve member (172) at one end of the body (142) mounted for movement in a generally horizontal direction and controlled by a diaphragm (176) at an opposite end of the body (142).

Abstract: A nipple is attachable to the outer end of the fill pipe of a motor fuel tank and contains a closure flap and a number of other valves performing various functions. The nipple therefore can have unified in it mechanisms performing most or all of the functions required in association with the tank and can be made as a pre-assembled unit quickly and easily attached to a fuel tank in the manufacture of a vehicle to minimize the number of required assembly procedures.

Abstract: The invention incorporates a high flow, pilot actuated pressure relief/rollover valve into a refueling vapor recovery system having a vapor vent line for recirculating vapor past the aspirator of a refueling nozzle and a nozzle seal for engaging a refueling nozzle in an airtight manner. All vapor of evaporative hydrocarbons created during the act of refueling are routed directly to an onboard storage canister.

Abstract: A vapor transfer pump for a storage tank includes a bladder and a continuously reciprocating plate disposed about the bladder. Vapor from the storage tank enters the bladder through a one way check valve set at a low pressure, and is forced out, by the continuously reciprocating plate, through a second one way check valve set at a higher pressure.

Abstract: A molded assembly comprising a wall made from a plastic sheet that is pliable at a first elevated temperature. A body having a penetrating portion and a connecting portion forms an aperture in the wall, the connecting portion extends through the aperture and is made from a material resistant to melting at the first temperature. The connecting portion is made from a material that will at least partially melt at the first temperature. The connecting portion engages one surface of the wall, whereby when the wall is raised to the first temperature, the connecting portion partially melts and becomes integral with the wall when returned to ambient temperature.

Abstract: The beer tap is made with stainless steel lines having constant cross-section and smooth bends and which are embedded in plastic. In an open position, the discharge line communicates with the feed line via two plates. In the closed position, the discharge line is rotated into communication with a cleaning line in the tap body.

Abstract: Rotary switching connectors providing both connection of the pipes with each other or to fixed members and for establishing the flow of fluid from the ones to the others or interrupting said flow by closing off the upstream circuits and venting the downstream circuits to the atmosphere. They are formed of two coupled elements 1 and 2 able to be manually rotated with respect to each other about an axis XX and to keep the position which is given them. An inlet channel 4 in element 2 and an outlet channel 3 in element 1 each equipped with an integrated connector 66 and 55 open into their respective adjacent faces over the same circle of radius XY. The angular registration of these orifices allows the sealed bidirectional passage of the fluid of the device by means of a seal 8 housed in a cup 7 at the periphery of channel 4 and compressed between the two elements 1 and 2.

Abstract: A fuel tank filler neck has a plate that pivots between a position restricting the filler neck and a position permitting introduction of fuel through the filler neck. A vent housing secured on the filler neck has a vapor inlet fitting and a vapor outlet fitting connected through a vent orifice, a pressure relief orifice, and a vacuum relief orifice. A diaphragm vent valve controls flow through the vent orifice. An actuating arm pivoted with the restrictor plate engages the vent valve across the vent orifice when the restrictor plate restricts the filler neck, and permits the vent valve to allow vapor flow from the vapor inlet fitting through the vent orifice to the vapor outlet fitting when the restrictor plate permits introduction of fuel through the filler neck. A diaphragm valve controls flow through the pressure relief orifice, and an umbrella valve controls flow through the vacuum relief orifice.

Abstract: Apparatus for dispensing liquid chemicals such as photoresist from containers, in particular, from collapsible pouch-type containers.

Abstract: A blowdown pot is provided with an inlet pressure control valve through which the pot receives unwanted residue e.g., ash from a high pressure chemical reactor, and this reactor residue can thereby be continuously or semi-continuously blown out from the high pressure, high temperature chemical reactor into the relatively low pressure blowdown pot which includes means maintaining a liquid level therein minimizing steam flashing and vessel wear. At the same time the reactor residue is removed from the pot with a liquid overflow.

Abstract: A low pressure delivery system for cryogenic liquids is disclosed, the system being capable of providing a stream of a single-phase cryogenic liquid at a substantially constant low pressure, in the range of about 1 psi. The system comprises a container into which a cryogenic liquid, from a high pressure source, is directed. The liquid in the container is maintained at a substantially constant level by an automatic filling mechanism. The liquid does not occupy all the space within the container, the remainder of the space being filled by gas evaporating from the liquid. This gas communicates, by a suitable conduit, with a pressure regulator valve. When the gas pressure exceeds a predetermined level, the valve opens, relieving the excess pressure. By thus placing an upper bound on the gas pressure, the system places an upper bound on the pressure of the liquid withdrawn from the container. The automatic filling mechanism of the system establishes a lower bound on the liquid pressure.

Abstract: Treating and venting gaseous nuclides in the gas space above the liquid level in tanks containing radioactive liquid is accomplished by connecting the gas spaces in series with the gas space at one end having the highest radioactivity, normally discharging at a limited rate into a waste gas system, and air to replace the discharged gas, introduced into the gas space at the other end. Sudden surges or fluctuations in gas pressure in the gas spaces due to rapid filling of the tank with liquid is relieved by discharging gas from the gas space of low activity at the other end into a stack. Voids in the tanks created by rapid emptying of the tanks is filled by air entering the gas space of low activity at the other end. A self cleaning filter which removes nuclides from the gas before entering the stack is reactivated by the passage of air in a reverse direction through the filter with the return of the nuclides to the gas space of low activity.

Abstract: An apparatus, method and valve for refrigerating articles with a liquid cryogen that is liquid at low temperatures and converts to a solid and then to a gas at a critical and decreasing pressure. The cryogen is introduced to the refrigerating apparatus through a pipe in which is one or more valves having a valve opening closed by a pressure member that is biased to closed position by pressure that is at least equal to the critical pressure with means for subjecting the member to the cryogen at a pressure that is sufficient to overcome the biasing means and eject the cryogen from the valve. This ejecting pressure is at least equal to the critical pressure for the cryogen which may be liquid carbon dioxide so that the cryogen remains in the liquid state until it leaves the valves in order that it will not set up to a solid within the valve body. The disclosure also includes a method for refrigerating articles and a valve embodying these principles.

Abstract: A vehicle anti-theft device which maintains the braking function of the braking fluid by preventing reverse flow thereof from the wheel cylinder back to the master cylinder until, following an authorized procedure, an interconnecting fluid passage is moved into a strategic position which allows this reverse flow. As an improvement over the prior art, the direction of application of the braking fluid is arranged to assist, rather than impede, the strategic positioning of the aforesaid interconnecting fluid passages as well as contribute to other noteworthy advantages in the operation of the within device.

Abstract: A flow control nozzle for directing a liquid through the floor of a liquid containing basin which includes: a substantially vertical tubular portion having a lower end adapted to extend through the floor of the basin; a chamber portion having a bottom surface adapted to communicate with an upper end of the tubular portion, the bottom surface having openings formed therethrough and being positioned a predetermined distance above the floor of said basin so as to permit liquid to pass therethrough into said chamber portion; and an air vent tube having an upper end adapted to communicate with the atmosphere and a lower end adapted to communicate with said tubular portion.