Abstract: A backflow prevention assembly has a body having a first bucket with a sidewall extending between a closed end and an open end along a first bucket axis, a first conduit extending from an inlet of the sidewall of the first bucket, and a second bucket having a sidewall extending between a closed end and an open end along a second bucket axis. A second conduit extends between an outlet of the sidewall of the first bucket and an inlet of the sidewall of the second bucket, and a third conduit extends from an outlet of the sidewall of the second bucket. The conduits extend along a conduit axis that is perpendicular to the bucket axes. The valve assembly includes covers secured over the open ends of the buckets and a valve member located in each bucket that is biased to prevent reverse flow through the inlets of the buckets.

Abstract: A device (1) for purification of water driven by gravity through a purification unit between an upper dirt water container (2) and a lower clean water tank (3). A backwash system may be integrated, the system comprising a receptacle (8) for accumulation of the backwash water to prevent consumption thereof by mistake.

Abstract: A complex cycle gas turbine engine for an aircraft with hydrogen fuel supply. The gas turbine engine comprises, in fluid flow series, a core gas turbine and a recuperator for heating hydrogen fuel prior to combustion by turbine exhaust products.

Abstract: A backflow prevention device includes a main pipe body extending along a first center longitudinal axis, at least one check valve disposed within the main pipe body, an inlet pipe connected to an inlet side of the main pipe body, and an outlet pipe connected to an outlet side of the main pipe body. The inlet pipe and the outlet pipe extend along a second center longitudinal axis. The first center longitudinal axis is offset with respect to the second center longitudinal axis in a direction perpendicular to the first and second center longitudinal axes. A center of the valve seat of the at least one check valve is offset with respect to the second center longitudinal axis in the direction perpendicular to the first and second longitudinal axes.

Abstract: A fuel delivery system (201) is shown for delivering the hydrogen fuel from a cryogenic storage system to a fuel injection system in a gas turbine engine. The fuel delivery system includes a pump (301), a metering device (302), and a fuel heating system (303,304) for heating the hydrogen fuel to an injection temperature for the fuel injection system.

Abstract: A cylinder head assembly includes a cast cylinder head and a turbocharger housing integrally cast with the cylinder head. The integrated cylinder head and turbocharger housing includes: (i) a compact low wetted area to provide an uninterrupted flow path pointed directly at a catalyst face to facilitate achieving cold start emissions targets, (ii) a casting core assembly with specific core geometry and steps for assembly to enable core assembly while meeting all cylinder head and integrated turbine housing functional requirements, (iii) an oxygen sensor disposed pre-turbine in an integrated exhaust manifold, and (iv) a fully integrated PCV make-up air system.

Abstract: A refrigeration device (100) having a closed circuit (C) within which a refrigerant fluid circulates and provided with a compressor and at least one shut-off valve (105) operable between an open position and a closed position to regulate the flow of refrigerant fluid through at least one evaporator depending on the temperature required by the user, the closed circuit includes at least one secondary by-pass branch (200) having an inlet section (201) and an outlet section (202) respectively arranged downstream (D) and upstream (U) of said at least one compressor (101) for the passage of said refrigerant fluid.

Abstract: A valve with a shuttle for use in a flow management system is capable of bypassing a backflow.

Abstract: A baffle for a main valve assembly of a fire hydrant includes an annular body, which further includes a cone-shaped portion, a first ring portion, and a second ring portion. The cone-shaped portion includes a first end with a first outer diameter and a second end with a second outer diameter, the second outer diameter being greater than the first outer diameter, and the cone-shaped portion defining a hollow. The first ring portion is connected to the cone-shaped portion at the first end of the cone-shaped portion, the first ring portion defining a center hole continuous with the hollow. The second ring portion is connected to the cone-shaped portion at the second end of the cone-shaped portion.

Abstract: Disclosed systems and methods provide access control and/or identification of user devices. A method may include receiving, by a processor circuit on a user's mobile device, a first user-profile including one or more first access rules governing the user's access rights to a point-of-entry device during non-emergency situations. The method may further include receiving, in response to an emergency event, a second user-profile including one or more second access rules governing the user's access rights to the point-of-entry device during emergency situations. When the user attempts to gain access to the point-of-entry device, the method may include determining a decision to grant or deny access to the point-of-entry device based on the first or second user-profile during non-emergency and emergency situations, respectively. Lastly the method may include transmitting the decision to grant or deny access to the point-of-entry device.

Abstract: Described herein is a fluid circuit device. The device incorporates at least one pressure balancing valve located between at least two fluid volumes that can be in a pressure differential arrangement wherein the at least one pressure balancing valve acts to address a pressure differential by opening a fluid volume or volumes to a third pressure equalising volume. In use, the fluid circuit device may in one embodiment be used in an energy absorption apparatus.

Abstract: A hydrant has a riser pipe and a shut-off element which can be brought from at least one open position into at least one closed position and vice versa. The shut-off element in the closed position seals the interior of the riser pipe from a hydrant inlet. The hydrant comprises at least one first passage, by which the interior can be fluidically connected to the outside of the hydrant, and one second passage, by which the pressurized hydrant inlet can be fluidically connected to the outside of the hydrant, wherein the first passage and the second passage can be brought into operative connection with each other. The operative connection produces a vacuum by water flowing through the second passage such that water in the interior of the riser pipe is led away via the first passage and the riser pipe is thereby drained.

Abstract: A self-acting pressure activated drain valve includes at least one inlet configured to receive a fluid. A drainage passage delivers the fluid to at least one outlet where the fluid is expelled. The self-acting pressure activated drain valve further includes a flexible diaphragm configured to operate in an open position and a closed position based on a pressure. The flexible diaphragm is normally biased in the open position such that fluid is delivered from the at least one inlet to the at least one outlet via the drainage passage. The pressure, however, initiates the closed position such that air is prevented from flowing through the drainage passage.

Abstract: A turbocharger (10) has an improved wastegate valve assembly (45) wherein a port-controlling valve body (44) includes flow formations which serve to reduce exhaust gas flow in non-optimal directions transverse to an optimal flow direction in the direction of a wastegate passage (26). These flow formations serve to optimize or maximize the flow of exhaust gas in the optimal or primary flow direction as the exhaust gas flow turns through a turn angle (47) from an inlet direction (29) to the optimal flow direction.

Abstract: A wet piping system modular valve assembly includes a single piece valve body with a check valve within the valve body. The check valve is movable between a closed position and an open position according to a pressure differential across the check valve. A drain valve is removably mounted to the valve body and fluidly connected with the valve body downstream of the check valve. A mechanically independent flow detection switch is removably mounted to the valve body and fluidly connected with the valve body upstream of the drain valve.

Abstract: A wet piping system modular valve assembly includes a single piece valve body with a check valve within the valve body. The check valve is movable between a closed position and an open position according to a pressure differential across the check valve. A drain valve is removably mounted to the valve body and fluidly connected with the valve body downstream of the check valve. A mechanically independent flow detection switch is removably mounted to the valve body and fluidly connected with the valve body upstream of the drain valve.

Abstract: A water backup prevention system is disclosed which has a valve and sensor assembly for being in a first position indicative of a normal condition and second position indicative of a water backup event, the valve and sensor assembly having a device for sensing when the valve and sensor assembly is in the second position and for generating a signal indicative of the water backup event, and a receiver device for receiving the signal indicative of the water backup event.

Abstract: The present relation is directed to solenoid valve comprising an input port including a spring biased input sealing tip, a first and second output port. The second output port including an output sealing tip, and a solenoid coil arrangement for generating magnetic fields which result in a force either on the input sealing tip or the output sealing tip. Wherein the solenoid valve arrangement consists of a single solenoid coil, that includes a permanent magnet movable in a first and second axial direction by a magnetic field. The permanent magnet being connected to the input sealing tip and to the output sealing tip such that movement of the permanent magnet in the first direction pulls the input sealing tip to open the input port and movement of the permanent magnet in the opposite direction pulls the output sealing tip to open the second output port.

Abstract: Inside a valve housing equipped with a first flow path and a second flow path that connect in parallel with a first port and a second port, there are provided a needle valve body that opens/closes a throttle hole in the first flow path, a check valve that opens/closes the second flow path, and a piston that performs an open/close control of the needle valve body through the interaction of the pressure of a fluid introduced into a pressure chamber and the spring force of a compression spring. The needle valve body is formed at the tip of a rod coupled to the piston. Inside the rod and the needle valve body there is formed a conduction hole connecting the throttle hole and the pressure chamber.

Abstract: A sound generator (100) mounts on a vehicle to manipulate vehicle noise originating from a vehicle operated by an internal combustion engine. The sound generator (100) includes a casing (110), a loudspeaker (120), and at least one pressure compensation valve (130). The loudspeaker (120) and the casing (110) together thereby enclose a volume (115). Further, the pressure compensation valve (130) couples the volume (115) enclosed by the loudspeaker (120) and the casing to an outside of the casing (110). The pressure compensation valve (130) thereby extends through a plane in which the loudspeaker (120) is located. A system (200) for manipulating sound waves propagating through exhaust systems of vehicles driven by an internal combustion engine uses the above sound generator (100).

Abstract: A self-acting pressure activated drain valve includes at least one inlet configured to receive a fluid. A drainage passage delivers the fluid to at least one outlet where the fluid is expelled. The self-acting pressure activated drain valve further includes a flexible diaphragm configured to operate in an open position and a closed position based on a pressure. The flexible diaphragm is normally biased in the open position such that fluid is delivered from the at least one inlet to the at least one outlet via the drainage passage. The pressure, however, initiates the closed position such that air is prevented from flowing through the drainage passage.

Abstract: A method for starting an engine is provided. The method comprises in response to an engine start request, cycling a gaseous fuel injector prior to activating a starter motor. In this way, delayed engine starts using gaseous fuel may be mitigated.

Abstract: A vacuum breaker valve is provided, including: a barrel member, a biasing assembly, a water stop gasket and a plate. The biasing assembly is abutted within the barrel member. The water stop gasket is disposed in the barrel member and abuts against the biasing assembly. The water stop gasket has a water stop portion which is deformable to close at least one air passage of the barrel member. The plate is located between the inlet end and the water stop gasket, and its engaging flange structure is blockable, in a direction toward the inlet end, by a shoulder portion of the barrel member. The biasing assembly normally drives the water stop portion of the water stop gasket apart from the at least one air passage to keep the at least one air passage non-closed.

Abstract: A device for delivering material to multiple surgical target locations includes a pressure reservoir selectably coupled to two or more outlets. Coupling the pressure reservoir to a given one of the outlets and pressurizing the pressure reservoir causes flowable material (e.g., bone filler material) to be dispensed from that outlet. A diverter for selectably coupling the pressure reservoir one of the outlets can be configured to trigger a pressure release valve for the pressure reservoir upon switching, thereby preventing unexpected or uncontrolled material delivery from the new outlet in response to sudden high pressure exposure.

Abstract: A flow rate control device, including: a body including first and second ports for supplying and discharging pressurized fluid; a set of first and second solenoid valves connected to an upper part of the body and selecting a state of flow of the pressurized fluid; and an opening/closing valve for increasing a flow rate of the pressurized fluid which flows as the result of selection by the first and second solenoid valves. The pressurized fluid is caused to flow from the first port to the second port at a predetermined flow rate while the opening/closing valve is closed, and then the flow rate of the pressurized fluid flowing from the first port to the second port is increased by opening the opening/closing valve.

Abstract: A damper assembly with a bypass for a vehicle comprises a pressure cylinder with a piston and piston rod for limiting the flow rate of damping fluid as passes from a first to a second side of said piston. A bypass provides fluid pathway between the first and second sides of the piston separately from the flow rare limitation. In one aspect, the bypass is remotely controllable from a passenger compartment of the vehicle. In another aspect, the bypass is remotely controllable based upon one or more variable parameters associated with the vehicle.

Abstract: A device for removing sea bed includes a conveying line at least partially surrounded by sea water and an emergency emptying device arranged in the conveying line. The conveying line is configured to have a sea bed be removed therethrough so that a removed sea bed is transportable to a surface in a conveying direction. The emergency emptying device is configured so that the removed sea bed moving in a direction counter to the conveying direction in the conveying line is dischargeable from the conveying line into the sea water.

Abstract: A valve arrangement includes at least two valves and a housing which is configured as an installation cartridge. One of the valves is configured as a pressure regulator and the other of the valves is configured as a delivery flow regulator. The valve arrangement is configured to be inserted or screwed into a variable-displacement pump, thereby minimizing the spatial requirement of the valve arrangement.

Abstract: An apparatus and method for filling a CO2 system that provides carbonation and delivery of beverages to a user is provided together with a control valve for performing this method. The steps include: attaching a hose and pumping liquid carbon dioxide through an inlet fitting housed in a control valve assembly; causing the translation of a valve stem to isolate a gas port and a tank and a user port and directing the liquid carbon dioxide to a liquid port and a tank; and stopping the pumping of the liquid carbon dioxide upon reaching a pre-determined pressure and removing the hose allowing the translation of the valve stem to close the valve assembly from the atmosphere and allowing the liquid to boil to a gas to provide delivery and carbonation to the beverage.

Abstract: A method and a device for supply of a dialyser in a dialysis unit with dialysis fluid is disclosed. At least one dialysis fluid concentrate is mixed with water to produce the dialysis fluid. The dialysis fluid concentrate is prepared in a reservoir unit in a given amount. A control and arithmetic unit calculates the dialysis fluid rate (Qd) such that, after a given treatment time (TB) has passed, a given residual amount of dialysis fluid concentrate or no residual amount remains in the reservoir unit. It is preferable to empty the reservoir unit by the end of treatment.

Abstract: A valve with a shuttle for use in a flow management system is capable of bypassing a backflow.

Abstract: A method and a device for supply of a dialyser in a dialysis unit with dialysis fluid is disclosed. At least one dialysis fluid concentrate is mixed with water to produce the dialysis fluid. The dialysis fluid concentrate is prepared in a reservoir unit in a given amount. A control and arithmetic unit calculates the dialysis fluid rate (Qd) such that, after a given treatment time (TB) has passed, a given residual amount of dialysis fluid concentrate or no residual amount remains in the reservoir unit. It is preferable to empty the reservoir unit by the end of treatment.

Abstract: A three-port control valve assembly comprising a valve body having two valve seats facing in a common direction and disposed along a central bore terminating in an exhaust port and communicating with a supply port and a common port. A pintle shaft connected to a solenoid actuator extends into the central bore. A first valve head mounted on the pintle shaft mates with the first valve seat to connect the supply port to the common port. While the solenoid is de-energized, supply pressure keeps the first valve closed. A second valve head mates with the second valve seat to connect the common port to the exhaust port. Opening of the first valve closes the second valve via supply oil pressure. When the first valve closes, the second valve is opened by a spring disposed between the second valve head and the exhaust port.

Abstract: A drain ring adapted for use in a device for flushing a dead-end of an underground municipal water distribution system includes a pair of annular seals and a channel between the seals, an outlet passage extending from inside the ring to the channel, and a flapper adapted to close the outlet passage under the influence of at least one of pressure and flow. The drain ring is removably positioned between a shut-off valve and an outlet of the device.

Abstract: A tubing drain valve in a production tubing string, positioned above a pump, is operated to open drain ports in the housing for draining produced fluids from the production tubing when the pump is shut off. The drain valve incorporates a check valve assembly which is freely moveable within the drain valve to shift a sleeve to open and close the drain ports. An uphole end of the check valve assembly is above the sleeve and seals to the top of a sleeve to shift the sleeve downhole and open the drain ports. A downhole end of the check valve is positioned below the sleeve in the valve. When the pump is turned on, the downhole end of the check valve assembly moves uphole to seal to the sleeve, creating a positive force to lift the sleeve to block the drain ports. The produced fluids flow through the valve and the production tubing to surface.

Abstract: An apparatus includes a valve housing having an inlet port, a first chamber with a first outlet port, and a second chamber with a second outlet port. A first valve opens between the inlet port and the first chamber under a first level of pneumatic pressure at the inlet port. A second valve opens between the first chamber and the second chamber under a second, greater level of pneumatic pressure in the first chamber. A third valve opens between the second chamber and the first chamber under a third level of pneumatic pressure in the second chamber, with the third level being less than the first level.

Abstract: Three-way valves having reduced leakage and fuel injectors using the same. Three-way spool poppet valves are disclosed having a spool with a poppet valve thereon cooperating with a seat on the valve housing to provide a substantially leak free valve closing in one direction characteristic of a poppet valve while preserving the advantages of a spool valve. Three-way ball valves are also disclosed having substantially leak free valves closing in both directions, but further including reduced short circuit losses due to direct flow from a high pressure supply to a low pressure vent during transition of the ball from one position to the opposite position. Fuel injectors with direct needle control using the three-way valves of the present invention are also disclosed.

Abstract: A hydraulic valve has a valve body with a bore into which an inlet port, an outlet port, and a workport all open. A valve spool is slideably received within the bore. The valve spool has a first position that provides a path between the inlet port and the workport, and a second position that provides another path between the outlet port and the workport. Inlet port pressure tends to move the valve spool into the first position and outlet port pressure tends to move the valve spool into the second position. A linear actuator is coupled to the valve spool by a spring, thereby biasing the valve spool toward the first position. Another spring biases the valve spool toward the second position.

Abstract: A check valve for use in a pump of a hydraulic cylinder includes a tubular member having a sheath member received therein. The pump includes a chamber provided in an output pipe thereof for receiving the check valve. The tubular member is constructed in the form of a hollow cylinder and includes a sealing sleeve fitted therearound. The tubular member includes an oil seal mounted on the front end thereof for the engagement with a hollow screw element in the chamber. The sheath member includes a hollow cap member, a first spring element, a ball, a hollow disc element, and a second spring element which are placed into the tubular member in turn. By using the hollow disc element and the second spring element, the tubular member may be fixed in the chamber, and by way of the screw element, the tubular member is enclosed in the chamber.

Abstract: An apparatus for monitoring the intra-abdominal pressure of a hospitalized patient includes a urinary catheter connected to a urine valve providing selectable communication between a discharge end of the urinary catheter and either a drain or a fluid source. Preferably, the urine valve is adapted for remote actuation and has a housing adapted to resist patient discomfort from leg-valve contact. Plumbing structure desirably maintains fluid supply and drain conduits in a substantially parallel arrangement to assist routing those conduits between a patient's legs. When the urine valve is oriented to permit communication with the fluid source, an infusion pump may be used to infuse a known quantity of fluid through the urine valve and into the patient's bladder. A pressure transducer desirably is connected in-circuit to indicate the fluid's pressure.

Abstract: An apparatus for monitoring the intra-abdominal pressure of a hospitalized patient includes a urinary catheter connected to a urine valve providing selectable communication between a discharge end of the urinary catheter and either a drain or a fluid source. Preferably, the urine valve is adapted for remote actuatation and has a housing adapted to resist patient discomfort from leg-valve contact. Plumbing structure desirably maintains fluid supply and drain conduits in a substantially parallel arrangement to assist routing those conduits between a patient's legs. When the urine valve is oriented to permit communication with the fluid source, an infusion pump may be used to infuse a known quantity of fluid through the urine valve and into the patient's bladder. A pressure transducer desirably is connected in-circuit to indicate the fluid's pressure.

Abstract: Device for separating oil from the air-oil separator of an oil reservoir, which device comprises a line (3) for the air-oil separator which is connected to the above-mentioned oil reservoir (1) with one far end and in which is provided a suction pump (4) for sucking in air, and whereby the other far end of the above-mentioned line (3) is connected to a filter (7) which is provided in a chamber (8) which is connected to the above-mentioned oil reservoir (1) by means of a return line (9), and which chamber (8) is provided with an outlet (10) to the environment, characterised in that a non-return valve (12) is provided in a the above-mentioned return line (9) which lets an air flow pass from the oil reservoir (1) to the chamber (8), and which prevents an air flow in the opposite direction, and whereby this non-return valve is provided with a small flow-back opening (16) which allows the oil which has been separated in the chamber (8) by the filter (7) to flow back to the oil reservoir (1).

Abstract: A freeze safe valve includes a housing coupled between an upstream tube and a downstream tube of a water flowing or supplying line for shutting off the water flowing or supplying line and for opening a drain port in response to the formation of ice on the downstream side of water flowing or supplying line, and thus for alleviating the pressure on the downstream side and for precluding or eliminating water damage from frozen, broken pipes, etc. A flexible valve member is disposed in the housing for selectively blocking the drain port of the housing by the fluid flowing into the housing and for selectively blocking the an orifice of a plate by a spring member.

Abstract: A pressure releasing device contains a tubular body member with a slidable slider member inside. The pressure releasing device is connected to the output of the high-pressure pump and high-pressure water will flows through the pressure releasing device when the pump is turned on and, when the pump is turned off, the high-pressure backflow will force the slider member to quickly block the inlet of the pressure releasing device. A pressure releasing opening controlled by a low-pressure valve is provided along the tubular body member. When the pump is turned off, the high-pressure backflow will be quickly released through the pressure releasing opening and the low-pressure valve helps to keep the water pressure inside the hose below a low pressure level to prevent dripping.

Abstract: A yard hydrant having a valve body with a drain port and a check valve mounted adjacent to the drain port to allow water to flow from the hydrant through the drain port to the ground and prevent ground water from flowing into the hydrant through the drain port and contaminating the water source.

Abstract: The vented port-cap includes a check-valve, which admits air into the barrel of the hydrant when the pressure inside is lower than the pressure outside. After an inspection of the hydrant, the hydrant can be left to drain by itself, even though the port-cap has been replaced and tightened.

Abstract: A pneumatic oscillator for providing pumping force to a pump. The oscillator has a single valve for controlling both the rate of oscillation of the oscillator and the flow of air. The valve includes a shuttle member and a detent mechanism. The detent mechanism controls the air flow in the oscillator and to the pump to which the oscillator is attached and the detent mechanism for regulating oscillation of the shuttle member. The configuration of the shuttle member and the detent mechanism eliminates the need for an additional valve to regulate oscillation of the oscillator. A cycle controller corresponding with the detent mechanism is adapted to change the rate of oscillation of shuttle member such that the need for additional valves or controllers for regulating the rate of oscillation is obviated.

Abstract: A portable device for measuring the refrigerant pressure in an automobile air conditioning system and, if needed, charging the system with additional refrigerant, is provided. An actuator is coupled to a pressurized container that selectively opens the container valve. A hose is provided, the first end of which is connected to the actuator, and the second end is coupleable to a service port of an automobile air conditioner. A T-connector with a check valve is disposed in the hose, and a pressure gauge is connected to the T-connector. When the second end of the hose is coupled to a service port and the actuator is not activated, the pressure gauge measures a pressure of the air conditioner. When the second end is coupled to a service port and the actuator is activated, refrigerant is released from the pressurized container and into the air conditioner.

Abstract: An air valve assembly for a fire hydrant includes a pressure responsive valve means removably mounted at or near a top of a fire hydrant and more specifically to a fire hydrant bearing housing. The pressure responsive valve means is adapted to open when the fire hydrant is not in use and to close when the fire hydrant is in use.

Abstract: A pneumatic exhaust controller for use with a source of pressurized air comprises a manifold having a first portal coupled to the source of pressurized air, a second portal, and an exhaust portal. Two manifold embodiments are disclosed. Two regulator embodiments that operate to close the exhaust portal in response to pressurized air from the air source being communicated through the first portal and that operate to pass pressurized air from the pressurized air source to the second portal are disclosed. The regulators are situated in chambers of respective manifolds. A solenoid valve is coupled to each of the manifolds and is operable to block and unblock pneumatic communication between the respective first portal and the associated second and exhaust portals.