Abstract: A unit for the regulation for control of a fluid pressure, having at least one housing section and a switching film connected to the at least one housing section. A chemically inert, non-rubber-like PTFEswitching film switching film is disposed in the valve housing and switches at pressure differences of 1 mbar to 250 mbar for regulating, opening or blocking a flow of a fluid from the inlet to the outlet. The switching film is formed of a fluorine and carbon containing polymer material. The switching film has a plate-shaped flat body with a bending region and has a central closure region surrounded by the bending region. The bending region, when switching the switching film, moves the central closure region relative to a valve seat of the valve housing in an axial direction of the plate-shaped flat body toward or away from the valve seat by a stretch free or low-stretch bending movement.

Abstract: A unit (10) for the regulation or control of a fluid pressure, having at least one housing section (13, 14) and a switching film (22) connected to the at least one housing section (13, 14) for switching at pressure differentials relative to an ambient pressure acting on the switching film (22), and for the regulation, release or blocking of a flow of the fluid between an inlet (28) and a discharge (30) for the fluid. The switching film (22) is made out of a polymer material having fluorine and carbon, in particular a thermoplastic having fluorine and carbon. In this arrangement, a hole cross-section (40) of the at least one housing section (13, 14) is closed off by the switching film (22).

Abstract: A nozzle device for sorting objects by ejecting a gaseous media towards said object. The nozzle device nozzle device including: a nozzle unit including at least one nozzle; a nozzle bar including gas supply means for providing a gaseous media to said nozzle unit; and a nozzle fixation bracket adapted for holding said nozzle unit in place; said at least one nozzle including: an inlet for receiving the gaseous media; and having one outlet, having an outlet area, for ejecting the gaseous media towards an object to be sorted; a channel extending between said inlet and said outlet; an outlet portion surrounding at least said outlet, wherein said outlet portion including a flexible material, which deflects upon ejection of the gaseous media, received from said nozzle bar, through said outlet whereby said outlet area increases. Also, a system for sorting objects.

Abstract: A check valve (1) for a through hole in a compartment wall (100) comprises an elastic membrane (20) covering an open end (16) of a flow passage (14), a base (11) to which the elastic membrane (20) is fixed, and a protector (30) covering at least a portion of the elastic membrane (20), wherein the elastic membrane is fixed to the base in a state where it is elastically stretched over and forced against a sealing surface (17) surrounding the open end (16) so as to seal the flow passage (14). The elastic membrane lifts from the sealing surface when the pressure in the flow passage is high. The elastic membrane may be air- or gas-permeable and, preferably, waterproof so as to impart a low pressure venting functionality to the check valve.

Abstract: A needle system includes a handle, a needle slider partially positioned in the handle, and a needle connected to and extending away from the needle slider. A restrictor is disposed in the needle. The restrictor is configured to inhibit passage of a sample through the needle slider.

Abstract: A faucet for dispensing a fluid includes a spout, a pull-out spray head removably coupled to the spout and including an outlet, and a valve assembly in fluid communication with the outlet. Additionally, the faucet includes a fluid treatment assembly configured to output a treatment into the fluid.

Abstract: A unit (10) for the regulation or control of a fluid pressure, having at least one housing section (13, 14) and a switching film (22) connected to the at least one housing section (13, 14) for switching at pressure differentials relative to an ambient pressure acting on the switching film (22), and for the regulation, release or blocking of a flow of the fluid between an inlet (28) and a discharge (30) for the fluid. The switching film (22) is made out of a polymer material having fluorine and carbon. In this arrangement, a hole cross-section (40) of the at least one housing section (13, 14) is closed off by the switching film (22). A method of forming a fluid-tight connection is also disclosed.

Abstract: A unit (10) for the regulation or control of a fluid pressure, having at least one housing section (13, 14) and a switching film (22) connected to the at least one housing section (13, 14) for switching at pressure differentials relative to an ambient pressure acting on the switching film (22), and for the regulation, release or blocking of a flow of the fluid between an inlet (28) and a discharge (30) for the fluid. The switching film (22) is made out of a polymer material having fluorine and carbon, in particular a thermoplastic having fluorine and carbon. In this arrangement, a hole cross-section (40) of the at least one housing section (13, 14) is closed off by the switching film (22).

Abstract: Disclosed is a method and a unit (10) for the regulation or control of a fluid pressure, having at least one housing section (13, 14) and a switching film (22) connected to the at least one housing section (13, 14) for switching at pressure differentials of 1 to 250 mbar, preferably from 1 to 100 mbar, relative to an ambient pressure acting on the switching film (22), and for the regulation, release or blocking of a flow of the fluid between an inlet (28) and a discharge (30) for the fluid. The switching film (22) is made out of a polymer material having fluorine and carbon. In this arrangement, a hole cross-section (40) of the at least one housing section (13, 14) is closed off by the switching film (22).

Abstract: A unit (10) for the regulation or control of a fluid pressure, having at least one housing section (13, 14) and a switching film (22) connected to the at least one housing section (13, 14) for switching at pressure differentials relative to an ambient pressure acting on the switching film (22), and for the regulation, release or blocking of a flow of the fluid between an inlet (28) and a discharge (30) for the fluid. The switching film (22) is made out of a polymer material having fluorine and carbon, in particular a thermoplastic having fluorine and carbon. In this arrangement, a hole cross-section (40) of the at least one housing section (13, 14) is closed off by the switching film (22).

Abstract: Systems, devices and methods for draining and analyzing bodily fluids are disclosed in which a drainage assembly is configured to prevent negative pressure build-up. The drainage assembly generally includes a catheter which may include a drainage lumen, a reservoir, a venting mechanism in fluid communication with the drainage lumen and a positive pressure lumen, and a controller. The venting mechanism may further include a valve which is configured to maintain a closed position, as well as a vent in fluid communication with the valve, where the venting mechanism is configured to inhibit wetting of the vent from fluid within the drainage lumen.

Abstract: An air removal assembly can include an air valve mountable on a fluid system; and a throttling device in fluid communication with the air valve, the throttle device further in fluid communication with the fluid system through the air valve when the air valve is mounted on the fluid system, the throttling device including: a body having an inner and outer surface, the inner surface defining a body cavity, the inner and outer surfaces defining a plurality of body orifices in fluid communication through the body cavity; a throttle movably positioned within the body cavity proximate to a first orifice of the plurality of orifices, the throttle movable to a closed position closing the first orifice and to an open position opening a fluid pathway between the first orifice and the body cavity; and a biasing element biasing the throttle to a partially-open position between the closed and open positions.

Abstract: An apparatus to allow or stop a flow into a piping system or an enclosed environment comprises a housing having an upper flow passage, a gasket, and a lower flow passage, wherein said gasket is between said upper flow passage and said lower flow passage, wherein said gasket has an inner diameter less than an inner diameter of said upper flow passage; a rotary valve inside said housing, wherein said rotary valve further comprises a main body and two guides affixed to said main body in opposition to each other, wherein said main body of said rotary valve is configured to be between said inner diameter of said gasket and said inner diameter of said upper flow passage, and wherein said rotary valve can move inside said upper flow passage and above said gasket; and two guide rails inside the upper flow passage.

Abstract: The present utility model relates to a vacuum breaker, an automatic flushing system for toilet having the vacuum breaker, and an electric bidet toilet having the automatic flushing system for toilet. The vacuum breaker comprises a body and a cover which cooperate to define a cavity, the body being integrally formed with an inlet pipe section which defines a water inlet and an outlet pipe section which defines a water outlet, the cover being formed with an air port, wherein a tip portion of the inlet pipe section extends into the cavity in a direction towards the air port. The length of the tip portion of the inlet pipe section which extends within the cavity is greater than half of the height of the cavity. According to the present utility model, because the tip portion of the inlet pipe section extends almost throughout the cavity of the vacuum breaker, the level of the water inlet is elevated, so that the CL (critical level) line is raised.

Abstract: A device (10) for controlling a flow of liquid, comprising a well (11) having an inlet tube (12) and an outlet opening (13), wherein the inlet tube (12) is arranged with an inlet opening (14) and a longitudinal axis (A), wherein the device further comprises a closing device (19) for at least partially closing the inlet opening (14), and a movable floating body (20), wherein the inlet tube (12) or the closing device (19) is operatively connected to the floating body (20) to control the closing of the inlet opening (14) by means of the closing device (19). The inlet opening (14) is arranged in an angle (a) to the outlet opening (13) of the well (11) to prevent a substantial part of the liquid from passing directly from the inlet opening (14) to the outlet opening (13) of the well (11). The invention also relates to a method for controlling a flow of liquid.

Abstract: A production string pressure relief system comprising a hollow cylindrical housing with an outer wall, a first relief valve assembly that is mounted on a first support base that is welded to the outer wall of the housing, and a second relief valve assembly that is mounted on a second support base that is welded to the outer wall of the housing directly opposite the first support base. Each of the first and second relief valve assemblies comprises a valve element that is in the shape of a spherical segment with a spherical sealing face, a cylindrical valve seat with a circular sealing face, and a leaf spring. The leaf spring provides a biasing force that pushes the spherical sealing face of the valve element against the circular sealing face of the valve seat to form a fluid-tight seal when the valve is in a normally closed position.

Abstract: Refrigerator appliances for use with single serve dispensers, and methods for operating refrigerator appliances, are provided. A refrigerator appliance includes a dispensing assembly. The dispensing assembly includes an outlet conduit configured for flowing a liquid therefrom, the outlet conduit disposed in the dispenser recess, a housing for supporting the single serve dispenser, the housing disposed in the dispenser recess, and a flow control device upstream of and in fluid communication with the outlet conduit, the flow control device outputting liquid at a generally constant pressure.

Abstract: Provided is a valve including a housing fitted with a valve coupling port being in flow communication with a gas inlet valve component and an independent gas discharge valve component. The gas inlet valve component includes a normally closed valve inlet port and an outlet barrier configured for spontaneous opening to thereby facilitate only ingress of ambient gas into the housing upon pressure drop at the valve coupling port The gas discharge valve component including a valve discharge port and a displaceable float member to thereby facilitate spontaneous egress of substantially only gas from the housing and remain closed upon presence of liquid within the housing.

Abstract: A double check valve is provided that includes an in-line inlet check valve and an outlet check valve that cooperate to prevent back flow of fluid through the valve. The check valve also includes at least one vent that allows for fluid trapped within the check valve to drain, thereby preventing freezing of the check valve and hydrant to which it is interconnected. The check valve provided omits many superfluous components and thus is smaller and easier to install than check valves of the prior art.

Abstract: A drain assembly including a drain pipe with a threaded portion and a nut is provided. The drain pipe includes a first end, an elbow portion, and a second end. The first end includes an annular flange and the threaded portion. To interconnect the drain assembly to a bathtub, the second end of the drain pipe is inserted through a drain port of the tub until the annular flange abuts a bottom wall of the tub. The nut is then threaded onto the threaded portion of the drain pipe to secure the drain pipe to the bathtub. The second end of the drain pipe is then interconnected to drain plumbing.

Abstract: An embodiment wall hydrant includes a reservoir, conduits containing an operating rod assembly and a service rod assembly, and a fluid outlet with a hose connector. The service rod assembly allows water supply to the hydrant to be shut-off from the front of the hydrant which allows servicing of the hydrant without requiring water shut-off to all or a portion of the water supply to the building. Embodiments include a vacuum relief dual check valve assembly at the fluid outlet which prevents backflow of water into the hydrant. Embodiments include a box which protects the hydrant controls.

Abstract: An anti-siphon device for a flush valve having an air-inlet sealing diaphragm, a diaphragm bracket with an air inlet, a flex sleeve, a venting bracket, and an offsetting spring. The deformation power of the air-inlet sealing diaphragm is comparatively small. When compared with existing anti-siphon reflux devices, this anti-siphon device has a very low current pressure loss and can prevent leaking. When the anti-siphon device is applied in heating and plumbing devices, such as a flush valve, the current pressure can be retained and thus satisfactory flush effect is achieved.

Abstract: A backflow prevention device including an opening in the housing configured to provide a user with access to the upstream check valve and the downstream check valve. The backflow prevention device further includes a cover configured to cover the entirety of the opening. The cover includes a portion of a lateral surface of a right cylinder. The backflow prevention device additionally includes a seal configured to sealingly engage the cover and the housing along the perimeter of the cover.

Abstract: A backflow prevention device including an upstream shutoff valve configured to allow a user to control the water flow stream through the housing. The upstream shutoff valve includes an obstruction. The obstruction is configured to prevent water flow at a first position and allow water flow at a second position. The obstruction is also configured to rotate about an axis of rotation between the first position and the second position. The upstream shutoff valve also includes a seal. The seal is configured to sealingly engage a sealing surface in the housing at the first position. All points of engagement between the obstruction seal and the sealing surface are located downstream of the axis of rotation of the obstruction.

Abstract: A backflow resistant stop valve for an aircraft galley plumbing system comprises a valve body defining an inlet, and inlet chamber, a transfer chamber, an outlet chamber, and an exit. The valve incorporates an anti-backflow device at the exit to prevent backflow, and flow through the body is controlled by a pivoting paddle disposed within the valve body having an upper flap, a spindle, and a lower flap, where the upper flap seals against the inlet chamber and the lower flap seals against the outlet chamber when the paddle is rotated to a first position. The valve utilizes a negative pressure at the outlet chamber that biases the valve closed until a sufficient column of water overcomes the bias.

Abstract: The closing and sealing device for use in air admittance valves includes a valve housing (10) designed to be connected to the waste water pipe system, an upper cap (14) and a valve closing and sealing device which includes a fixed valve seat (22) and a movable closing member (24). The housing (10) includes at least one passageway (16) in communication with the surrounding atmospheric air, and at least one passageway (18) in connection with the inner space (19) of the sewage system, each of the passageways being in contact with the movable closing member (24).

Abstract: A venturi eductor comprising a flow passage for a first liquid, a dispensing passage with an opening into the flow passage to allow a second liquid to be drawn therethrough and into a first liquid flowing through the flow passage, and a flow restrictor in the dispensing passage, in which the flow restrictor comprises a body with a plurality of nozzles passing therethrough with varying sizes of orifice, which body is movable between a first position in which a first of said nozzles is disposed in the path of the second liquid, and further positions in each of which a further of said nozzles is disposed in the path of the second liquid.

Abstract: A check vacuum breaking device for a tap includes a locking member screwed into a chamber of a tap. The chamber includes an inlet and an outlet. The locking member includes a cover member secured on a top end thereof and having plural air bores disposed around a rim of the cover member, and a shaft extends downward from a center of a bottom surface of the cover member. A fitting member is assembled to the chamber of the tap and includes a hollow peg extending upward from a central portion thereof and having a closed bottom to be fitted to the shaft of the locking member. The hollow peg includes a stepped recess formed on an upper end thereof, and a stopping pad is fitted to the stepped recess. The fitting member includes an annular loading member fitted to a lower end thereof and an anti-leak loop to cover the loading member.

Abstract: An anti-back flow vacuum breaker valve that includes a valve body having a cylindrical internal chamber having an upper portion and a reduced diameter lower portion forming a horizontal valve seat, and having an inlet communicating with the chamber on the underside of the valve seat, and having an outlet communicating with the chamber on the over side of the valve seat. A ball is positioned within the internal chamber for sealing the inlet of the valve body. A valve cap having a lower portion mating with the upper portion of the valve body sealed and securely attached to the valve body, and having an internal conical chamber having a central vertical journal therein, forming a journal vent with a vent seat at the lower end thereof aligned with the valve seat of the body.

Abstract: A tube coupling device includes a coupling member having an upper peripheral casing formed by a peripheral flange and a peripheral wall, a number of openings formed in the peripheral flange and communicative with an environment of the peripheral casing, a water guide plate engaged into the peripheral fence and engaged with the peripheral wall and having one or more passages, a partition member engaged into the peripheral casing and having a bore for water to flow into the coupling member, and a receptacle engaged into the coupling member, a valve member biased by a spring biasing member to engage with the partition member and to form a check valve.

Abstract: A vacuum relief unit and method for venting air into a pool pumping system when a pressure level within the system drops below a first pressure level limit. The unit includes a closed air chamber, a device for venting chamber air from the air chamber into the pool pumping system when the pressure level in the pool pumping system drops below the first pressure level limit, a device for venting atmospheric air into the air chamber when the pressure level within the air chamber drops below a second pressure level limit that is lower than the first pressure level limit, and a device for delaying operation of the atmospheric air venting device when the pressure within the air chamber is no longer below the second pressure level limit.

Abstract: A valving assembly, comprises elongated tubular body, a first annular diaphragm in the body, and a first annular seat in the body engaged by the first diaphragm when pressurized fluid flow passes through the body and through the first diaphragm to deflect the first diaphragm, a second annular diaphragm in the body, and a second annular seat in the body engaged by the second diaphragm when said pressurized flow passes through the body and second diaphragm to deflect the second diaphragm, a third seat in the body engaged by the first diaphragm to block reverse flow through the body, an escape port in the body to allow escape of the reverse flow, and a drain port in the body to allow drainage of such fluid in the body upstream of the first diaphragm during such reverse flow.

Abstract: A prior art backflow bonnet and poppet is replaced by a functionally equivalent new bonnet and poppet. The new bonnet and poppet reduces risk of freeze damage with about a 50% greater strength against pressure. The new bonnet and poppet has only three parts when assembled versus six parts in the prior art. A hollow in the valve plug holds the biasing spring. The bonnet shaft rides in the hollow.

Abstract: An application for a living-hinge air vent valve connectable to a sewer conduit includes a base and a cover sealed to the base forming a cavity between the cover and the base. A fluid inlet shaft depends from a roof of the base and is connected to external air passages passing through a side of the base and through vents in a side of the cover. A living-hinge flapper is situated above the fluid inlet shaft and within the cavity. The living-hinge flapper allows air to flow from the fluid inlet shaft into the cavity and prevents sewerage gasses from flowing from the cavity out through the fluid inlet shaft. One or more connecting shafts in the base fluidly connect the cavity with a sewer system.

Abstract: A vacuum breaker that includes a substantially cylindrical tubular body having a first end and a second end, wherein the first end has a rim extending away from the body and a ledge extending axially away from the rim thus defining an L-shaped profile. A retainer bead extends axially away from an end of the ledge toward the vacuum breaker body, wherein the retainer bead is adapted to provide a friction fit for releasably attaching a flow control insert to the first end of the body of the vacuum breaker. The second end of the body includes a plurality of lip seals, wherein each lip seal defines a slit with a molded hinged member at an end thereof. The hinged member is preferably in the shape of a hole to prevent tearing and maintain the correct slit length.

Abstract: An innovative method and apparatus for disposing of waste fluids, especially human body fluids such as are generated during surgery, into a hospital's sanitary sewer system is provided. A conduit system is adapted to transport waste fluid from a receptacle to a sanitary sewer using an eductor having a venturi device. The conduit system includes first and second conduits. First and second connectors are used to easily connect the first conduit to the second conduit. The second connector includes a flap that acts as a check valve.

Abstract: A vacuum breaking device includes a housing, a sealing base, a floating cup and a sealing ring. The housing has a liquid inlet, a liquid outlet and an air passageway. The sealing base is installed in the air passageway, and the floating cup is installed in an inner chamber of the sealing base. The sealing ring is fitted around an upper end of the floating cup for properly sealing the outer-air inlet in the upper portion of the sealing base and communicating with the inner chamber. The floating cup has an annular flange for increasing the buoyancy of the floating cup, so that the outer-air inlet may be quickly sealed up. The annular flange has plural air paths, so the vacuum condition may be broken immediately when a vacuum pressure is produced in the device.

Abstract: A hose connector with adjustable ambient air inlets includes a conduit section having a plurality of spaced-apart holes covered by an adjustable outer ring having a similar pattern of spaced-apart holes. Turning the outer ring relative to the conduit section permits the holes in the conduit section to be either fully opened, fully covered, or at some intermediate condition.

Abstract: A backflow-prevention system that substantially prevents contaminant backflow at a treatment site. The system includes a fluid ejector tube for insertion into the patient's mouth and a backflow prevention device that receives fluid from the fluid ejector tube. The backflow prevention device includes an internally positioned valve member. The valve member limits contaminant backflow. The valve member is movable between open and closed positions based on a vacuum pressure condition in the system.

Abstract: A backflow-prevention system that substantially prevents contaminant backflow at a treatment site. The system includes a fluid ejector tube for insertion into the patient's mouth and for removal of fluids when a threshold vacuum pressure is applied. A backflow prevention device receives fluid from the fluid ejector tube and includes an internally positioned valve. The valve prevents contaminant backflow upon release of the vacuum pressure or a reduction in the vacuum pressure. Upon application of vacuum pressure, the valve moves into an open position to allow fluid flow away from the treatment site. The system can also include a disposable cover member that extends over at least portions of the fluid ejector tip, the backflow prevention device, and other features such as an ON/OFF valve assembly of a suction system. Similar principles of backflow prevention can be applied to fluid dispensers (e.g.

Abstract: A showerhead facilitating draining of water retained following shut-off. The showerhead includes a housing swivelably fitted on a ball-adapter which in turn includes an integral threaded segment for attachment to a water feed line. An air pathway is formed to extend from inside to outside the ball-adapter where it opens to generally atmospheric pressure. A flexible check valve in the form of an annular skirt is retained by an integral ring portion where the ball-adapter is threaded to the feed line. Under water-flow pressure, the skirt expands, blocking the passage. Upon shut-off, the skirt withdraws, instantly opening the air passage. Opening the showerhead to atmospheric pressure relieves the normally occurring suction effect which keeps water from draining completely from the showerhead spray holes. Thus avoiding the widespread problem of trapped water slowly evaporating and leaving behind stubborn and unsightly mineral deposits that eventually build up to clog showerhead spray holes.

Abstract: An eductor for mixing two liquids wherein the eductor includes a closed or non-air gap back flow prevention member. The vacuum profile of the eductor is altered by changing an opening in a passage portion to controllably divert water flow around the venturi tube or diverting the water without the opening. This affords the changing of the vacuum profile without redesigning the entire eductor.

Abstract: A vacuum breaking device includes a housing, a sealing base, a floating cup and a sealing ring. The housing has a liquid inlet, a liquid outlet and an air passageway. The sealing base is installed in the air passageway, and the floating cup is installed in an inner chamber of the sealing base. The sealing ring is fitted around an upper end of the floating cup for properly sealing the outer-air inlet in the upper portion of the sealing base and communicating with the inner chamber. The floating cup has an annular flange for increasing the buoyancy of the floating cup, so that the outer-air inlet may be quickly sealed up. The annular flange has plural air paths, so the vacuum condition may be broken immediately when a vacuum pressure is produced in the device.

Abstract: The invention proposes a plumbing fixture block, which has seatings for a mixing device and a shut-off valve. Furthermore, the plumbing fixture block has seatings to accommodate at least one nonreturn valve and one pipe air-release valve. The nonreturn valve and the pipe air-release valve are located one behind the other in a water channel.

Abstract: A vacuum breaker having a floating piston that is movable in response to the communication of negative pressure to an inlet port of the vacuum breaker for permitting venting of fluid to the outside atmosphere through a vent opening. The vacuum breaker includes a liquid capture and containment device, which in conjunction with an outer hood, is effective for capturing and containing liquid in a fluid flow stream discharging from the vent opening and redirecting the captured liquid back into the vacuum breaker in order to prevent water leakage.

Abstract: An in-line vacuum breaker for a flexible hand held shower. The vacuum breaker includes a frusto-conical body with a water flow passage extending therethrough. The frusto-conical body has an inlet cavity at one end and an outlet cavity at the opposite end. An outlet plug is threaded into the outlet cavity. A first passage formed in the outlet plug leads to an outlet opening. A second passage in the outlet plug extends parallel to the first passage and leads to a vent opening. A manifold passage defined in the outlet cavity by the body and the outlet plug connects the body passage and the first and second passages. A first check valve in the first passage permits fluid flow only from the manifold passage to the outlet opening. A second check valve positioned in the second passage prevents fluid flow from the manifold passage to the vent opening. A third check valve positioned in the body passage permits fluid flow only from the body inlet opening to the manifold passage.

Abstract: Reject waste water adapter coupling fitting, for use with a household undercounter reverse osmosis (R/O) water filtration installation associated with an in-counter sink with its outlet connected by standard slip fit S/J plumbing fittings to a sink drain trap plumbed to the household sewer system. The R/O reject waste water drain line is coupled into the sink drain trap by various improved adapter coupling embodiments: e.g., a ball-and-cage type back check valve in the adapter; a modified S/J branch tail piece having a special adapter fitting that is permanently joined to the inlet of the branch stem tube of the tail piece; and a standard disposal Ell with a waste water drain inlet protuberance integrally molded at the outside corner of the junction of a quarter-turn curved elbow portion with a straight sleeve portion of the Ell.

Abstract: To be used with an internal combustion engine having a crank case wherein engine oil is contained, and an engine internal oil pressure system structured to distribute lubricating oil to moving and wearing parts of the engine from the crank case, an engine pre-lubrication system which includes an oil reservoir to contain a quantity of engine oil to be supplied through an oil flow corridor of the reservoir to the engine internal oil pressure system for pre-lubrication of the engine. The pre-lubrication system is structured to constantly maintain an acceptable supply of oil within the reservoir and will supply pre-lubricating oil upon a burst of air being initiated and directed into the oil reservoir, through an air flow corridor, so as to displace oil contained in the reservoir out through the oil flow corridor for pre-lubrication of the engine.

Abstract: An anti-siphon valve providing positive initiation and cessation of liquid flow there through during liquid transfer operations. The valve includes an inlet port for receiving liquid and an outlet port for delivering liquid. A vent port leads to the outlet port, while an air flow controller situated within the vent port prohibits air flow during liquid flow and permits air flow into the outlet port during liquid non-flow, thereby producing a vacuum break upon liquid non-flow. The air flow controller preferably is a vent valve which is pressure sensitive to close the otherwise-open vent port in response to pressure from the liquid flowing through the outlet port.

Abstract: A siphon inhibiting valve comprises first and second portions of a housing structure and a buoyant member disposed within the housing structure for movement along a first axis between an inlet port and an outlet port. The buoyant member is shaped to have a cylindrical portion and another portion which is shaped in the form of a frustum of a cone. Upward movement of the buoyant member causes an elastomeric seal on the buoyant member to come into contact with an internal lip formed in the housing structure, thereby creating a seal that prevents an upward flow of water in a direction from the outlet port to the inlet port. When cooling water is drained from the outlet port area, the buoyant member is forced downwardly into an open position by its own weight and the weight of the water on its inlet port side. This free movement of the buoyant member allows the water on the inlet port side to drain without manual intervention.