Abstract: The disclosure relates to the technical field of hydraulic pneumatic systems, in particular to an electric control valve detection plug and an electric control valve signal detection method. The disclosure can accurately measure the electric control signal actually obtained by the valve, thus avoiding the risk of misjudgment. The disclosure has simple manufacture and convenient installation and disassembly.

Abstract: An air handling system of a heating, ventilating, and air conditioning system for a vehicle includes a housing including a mixing and conditioning section. The mixing and conditioning section has an evaporator core and a heater core disposed therein. The heater core is disposed downstream from the evaporator core. A first primary door is disposed intermediate the evaporator core and the heater core. A second primary door is disposed downstream from the heater core.

Abstract: An air release structure of an integrated flow control mechanism includes a flow control housing, a radiator nipple provided on an upper portion of the flow control housing and forming a bypass passage portion together with the flow control housing, a float provided in the bypass passage portion and an elastic member to support the float elastically and to selectively open the bypass passage portion.

Abstract: An irrigation sprinkler can be provided with a flow guard feature configured to send an indicator stream into the air when a nozzle is missing, while still conserving most of the water that would have been wasted without the flow guard feature. The flow guard feature can include a valve assembly having a first port and a second off-axis port. The second port can be smaller than the first port. The second port can be non-parallel to the first port. The first port can be open when the nozzle is present and be sealed when the nozzle is missing. The second, off-axis port can be open even when the nozzle is missing to provide the indicator stream.

Abstract: A pumping unit operable to pump water has a longitudinal pumping unit axis. A pump shaft engages shaft bearings in a pump shaft housing. A drain conduit includes a drain conduit inlet segment, a drain conduit ascending segment, and a drain conduit terminal segment. The drain conduit inlet segment has a longitudinal drain conduit axis disposed at an obtuse angle to the longitudinal pumping unit axis. The drain conduit ascending segment is disposed at an obtuse angle to the drain conduit inlet segment. The drain conduit terminal segment is disposed at an obtuse angle with respect to the drain conduit ascending segment and is disposed at a level above the shaft bearing. Accordingly, backflow water flowing through the drain conduit terminal segment, the drain conduit ascending segment and the drain conduit inlet segment, respectively, flows into the pump shaft housing to contact and cool the shaft bearing.

Abstract: A valve assembly for a fuel tank system including a fuel tank having a fuel tank outlet and a purge canister includes a main valve and a safety check valve. The main valve can be configured to move from a closed position to an open position. The main valve can have a main valve first port fluidly coupled to the outlet of the fuel tank and a main valve second port fluidly connected to the purge canister. The safety check valve can be configured to move from an open position to a closed position upon a pressure drop at the fuel tank outlet exceeding a predetermined threshold. The safety check valve can have a safety check valve first port fluidly coupled to the outlet of the fuel tank and a safety check valve second port fluidly coupled to the purge canister.

Abstract: A fuel tank system constructed in accordance to one example of the present disclosure includes a fuel tank, a purge canister and a valve assembly. The valve assembly can be fluidly coupled between the fuel tank and the purge canister. The valve assembly can include a main valve and a safety check valve. The main valve can have a main valve first port fluidly coupled to an outlet of the fuel tank and a main valve second port fluidly connected to the purge canister. The safety check valve can be configured to move from an open position to a closed position upon a pressure drop at the fuel tank outlet exceeding a predetermined threshold. The safety check valve can have a safety check valve first port fluidly coupled to the outlet of the fuel tank and a safety check valve second port fluidly coupled to the purge canister.

Abstract: An electronic cigarette includes a battery module and an atomizing module. The battery module is provided with a battery joint surface. The atomizing module is provided with an atomizing joint surface. The atomizing joint surface is provided with a guide rib, and the battery joint surface is provided with a guide groove, or the atomizing joint surface is provided with a guide groove, and the battery joint surface is provided with a guide rib. The guide rib is fitted in the guide groove so that the battery module and the atomizing module are assembled together.

Abstract: A displacement pump includes a delivery chamber, connected to a pressure connection and a suction connection. A displacement element determines the volume of the delivery chamber and can be moved back and forth between a first position, in which the delivery chamber has a smaller volume, and a second position, in which the delivery chamber has a larger volume. The pressure connection is connected to the delivery chamber by a pressure valve and the suction connection is connected to the delivery chamber by a suction valve. The displacement pump is easy and economical to produce and simultaneously reliably provides a degassing function, whereby downtimes can be reduced and the reliability of the delivery process can be increased. With the pressure valve closed, a backflow channel connects the delivery chamber and pressure connection, through which medium can enter the delivery chamber and/or gas can escape from the delivery chamber.

Abstract: Valve assembly for a pump, the valve assembly including: a valve seat having a valve face (60), a flexible valve having a sealing portion for abutting the valve face (60), and at least a fluid pathway (66, 68, 70) from an interior of the valve seat to an exterior of the valve seat that serves as a leak flow path for fluid when the valve is in the closed position to reduce pressure build up on the valve. In this way, the vacuum inside the pump can be released when the value is in the closed position and the pump is stopped, thereby allowing the pump to start/restart due to reduced pressure build up on a side of the valve abutting the valve face. A pump or compressor including such a valve assembly is also disclosed.

Abstract: The invention relates to a non-return valve with a valve sleeve, comprising a valve seat and a flow opening and a sealing body moveable in the valve sleeve, comprising a bulged sealing face, wherein the bulged sealing face is arranged at a head end of the sealing body and the non-return valve comprises guiding means for the axial guidance of the sealing body in the valve sleeve, so that the sealing face always faces the valve seat, and a locking element is inserted into the valve sleeve through the flow opening and is fixed therein, so that the locking element restricts the movement of the sealing body in the valve sleeve.

Abstract: Exemplary embodiments of the present disclosure include systems, apparatuses, and methods that are directed to controlling pressure in a pressurized flow system, such as a CO2-based chromatography system or other pressurized flow systems. Exemplary embodiments of the present disclosure comprise one or more apparatuses, systems or methods for implementing multiple pressure regulators to control pressure. In addition to providing pressure control, apparatuses, systems and methods described herein dampen damaging thermal effects caused by pressure drops of a mobile phase including CO2.

Abstract: An improved air compressor includes a cylinder that is fitted with a piston body and defines at its top wall a plurality of exit holes which are approximately equal in diameter and can be regulated by plugs to enable the cylinder to communicate with an air storage container. The exit holes are normally sealed by the plugs with the assistance of compression springs when the air compressor is not in operation. The exit holes allow the compressed air produced in the cylinder to quickly enter the air storage container, so that the piston body can conduct reciprocating motion more smoothly and thus the performance of the air compressor can be increased.

Abstract: A shock absorber is provided with a damping force generating valve for a very low-speed range that includes: a non-seated leaf valve having a stacked structure; and an opposed part that faces the free end of a largest leaf of the leaf valve and forms an orifice with the fee end. The largest leaf and one leaf, and the largest leaf and another leaf are arranged separately from each other in the axial direction of a piston by the respective spacers. The one leaf includes a leaf element having cutout parts on the side facing the largest leaf. The another leaf includes a leaf element having cutout parts on the side facing the largest leaf.

Abstract: A device for venting a hose is disclosed. In some embodiments, the device includes a housing having a cylindrical sidewall and an endwall, the sidewall defining an inner housing surface and an outer housing surface, an opening extending through the sidewall, and a hose retention system extending from the inner housing surface.

Abstract: A proportional pressure regulating valve has a valve piston (12) longitudinally movable in a valve housing (10) and connecting a utility connection (A) to a pressure supply connection (P) or to a tank or return flow connection (T) dependent on the displacement position of the valve piston. The valve piston is actuated by an actuation magnet (48) that can be supplied with current. A control device (50) is between the valve piston (12) and the actuation magnet (48), and allows the valve piston (12) to become pressureless on the valve piston side (52) facing the actuation magnet (48). The valve piston (12) is displaced in the direction of the actuation magnet (48) under the supply and/or utility connection pressure when the actuation magnet is not actuated.

Abstract: In a recording apparatus, one end section sides of first liquid supply tubes are connected to ink tanks which are provided to be able to be attached and detached from outer sections of a main housing. Other end section sides of second liquid supply tubes, where one end section sides are connected to a liquid ejecting head side which is provided in an inner section of the main housing, are connected to other end section sides of the first liquid supply tubes using connection members. Out of first connection sections which are provided in the connection members on the first liquid supply tubes side and second connection sections which are provided in the connection members on the second liquid supply tubes side, at least the first connection sections are provided so as to be positioned at outer sections of the main housing.

Abstract: A damper assembly (20) is disclosed, and it comprises: a first rube (22) defining an inner surface (24) extending along an axis (A) to define a fluid chamber (30) containing a damping fluid (32); a rod (34) extending axially in the first rube (22); a guide (40) annularly disposed about the rod (34) and engaging the first tube (22); a piston (42) and a retainer (46) which are attached to the rod (34) and are slidably disposed in the first tube (22); a first spring (50) engaging and extending axially away from the retainer (46); a valve body (52) which is disposed adjacent to the first spring (50) and has a periphery (54) spaced from the inner surface (24) of the first tube (22) to define an annular channel (60); a second spring (66) extending axially away from the valve body (52); a bumper (68) engaging the second spring (66). The valve body (52) moves into sealing engagement with the retainer (46) in response to the bumper (68) engaging the guide (40).

Abstract: A production sleeve assembly for use downhole includes a fluid pathway configured to provide fluid communication between an exterior of a wellbore tubular and an interior of the wellbore tubular through a chamber, a flow restriction disposed in the fluid pathway, and a valve disposed in series with the flow restriction in the fluid pathway. The valve comprises a rupture disk, and a plug releasably engaged in the chamber in series with the rupture disk. The valve is configured to allow production from the exterior of the wellbore tubular to the interior of the wellbore tubular through the chamber once the rupture disk is actuated, and the valve is configured to release the plug from the chamber when the rupture disk is actuated and the pressure within the exterior of the wellbore tubular is greater than the pressure within the interior of the wellbore tubular.

Abstract: A nozzle comprises: a housing element, a chamber being defined inside the housing element for containing a fluid; a rotor extending along a longitudinal axis, the rotor being arranged inside the housing element so that the longitudinal axis of the rotor is tilted relative to an axis of the housing element, the rotor having a conduit through which the fluid contained in the chamber can flow out of the nozzle. The rotor is rotatably derivable about the axis of the housing element, so that the longitudinal axis of the rotor moves along a conical surface. The nozzle further comprises an anti-drip device for selectively closing the conduit of the rotor, so that the fluid contained in the chamber is prevented from exiting through the conduit when the nozzle is inactive.

Abstract: A replaceable fluid container for a vehicle, for example a vehicle engine, the container comprising: a housing comprising a fluid reservoir; at least one fluid port arranged on the housing to couple the reservoir in fluidic communication with a fluid system of the vehicle; a vent port arranged on the housing to couple the reservoir in fluidic communication with the vehicle for allowing gas to be passed into and out from the reservoir; a vent tube connected at a first end, to said vent port and arranged within the reservoir to pass through fluid contained in the reservoir when the container is connected with the fluid reservoir in fluidic communication with the fluid system of the vehicle, with a second end of the vent tube in a headspace above the fluid in the reservoir, to allow gas communication between the vent port and the headspace, in which the vent tube comprises a vent valve at the second end of the vent tube adapted to close to prevent ingress of fluid and gas from the reservoir into the vent tube wh

Abstract: To provide a straightening device that is large in effective sectional area and has high straightening performance. This is a straightening device arranged in a fluid passage for making fluid pass through it that is provided with: a main body having an inflow port arranged in the fluid passage and for flowing the fluid into it, an outflow port for flowing the fluid out of it, and a communication passage for communicating the inflow port with the outflow port; and multiple projections that are arranged in a protruding manner toward a central part of the communication passage from an inner peripheral part and extend along the communication passage, in which the projections are each configured to have a narrower width in the central part than that in an inner peripheral part of the communication passage when seen from a flow direction of the fluid.

Abstract: A device for connecting a pump, having a through-hold provided in a prosthesis shaft, wherein the device comprises at least one channel having a first outlet for connecting to the through-hole in the prosthesis shaft and a second outlet which can be connected to the pump and at least one valve, wherein the valve can be switched to a first mode and to a second mode, and the valve is a one-way valve in the first mode and a two-way valve in the second mode.

Abstract: Embodiments disclosed herein describe systems and methods for a spring retainer configuration without suction bore grooves, wherein the spring retainer may be secured in place via a keeper. By eliminating the grooves, embodiments may reduce the surface area of the bore intersection, which may slow the rate of material erosion. Accordingly, embodiments may extend the life of a fluid end in high pressure environments.

Abstract: A pressure control fill valve for a pressurized dispenser container comprises a first and second end and a base, a first and second circumferential lip. The lips enable placement of the valve in an opening of a pressurized dispenser container in first a position, where a propellant gas can be filled into the container and a second position for complete closing of the container. According to the invention, the second lip of the valve is asymmetric about its circumference. This prevents the valve from being pushed out of the opening of the container in case of high over-pressure or enlargement of the opening due to a temperature increase. The invention eliminates the hazard of a loss of valve and propellant gas in case of high temperature.

Abstract: An over-molded valve stem for a valve assembly includes a rigid inner member and a unitary elastic cover molded over the inner member. The inner member includes a main section and an arm extending from the main section. The cover includes a main cover portion, an arm cover portion, and an end portion, with the end portion being spaced from the main cover portion by the arm cover portion. The main cover portion is disposed over the main section with the end portion and main cover portion defining diameters that are larger than the diameter of the arm cover portion. The end portion can include an integral seal member for engaging with a bore of the valve assembly. A method of making the valve stem involves molding the cover about the inner member such that a parting line doe not axially extend across sealing surfaces.

Abstract: The present invention relates to an anti-shake flow-limiting cutoff valve, comprising a flow stop valve, a cutoff valve and a check structure. Said flow stop valve comprises a valve body, a valve seat, a piston and a biasing component. The check structure is arranged downstream said flow stop valve to prevent fluid from flowing back. In case of a sudden excessive water flow, the flow stop valve is closed under impact of excessive water pressure to block the water flow. At this time, since the liquid flow in the pipeline is suddenly blocked, the liquid flow remaining in a pipeline downstream the flow stop valve tends to form a reverse flow to impact the flow stop valve, thus shaking the flow stop valve, which may further lead to insufficient close or damage of the flow stop valve.

Abstract: A damping valve includes: a valve disc having a port a shaft member provided in the valve disc; an annular leaf valve that is attached to an outer periphery of the shaft member so as to be adjacent to the valve disc; a main valve provided on the outer periphery of the shaft member to be free to move in the axial direction; and an annular plate spring that biases the leaf valve toward the valve disc side. The main valve includes a spring supporting portion that contacts an end surface of the leaf valve and supports a valve disc side end portion of the plate spring, and a tubular collar that extends in the axial direction, and is provided to be free to move in the axial direction relative to the shaft member. The plate spring is attached to an outer periphery of the collar.

Abstract: A hydraulic control valve is provided having a solenoid body, an energizable coil, and an armature positioned adjacent the coil. A valve stem extends from the armature. The coil is energizable to move the armature and the valve stem from a first position to a second position. The valve body, the armature and the valve stem are configured so that the armature and the valve stem are biased to the first position by pressurized fluid, allowing the armature to operate without a biasing spring.

Abstract: A disposable dispensing cartridge comprises a reservoir adapted to contain a solution to be dispensed; a chamber in fluidic communication with the reservoir through a first unidirectional valve. The chamber comprises an outlet portion with a second unidirectional valve allowing passage of the solution out of the chamber. The disposable cartridge is connectable via a second connecting portion to a pressurizing device. The pressurizing device is adapted to apply a reduced pressure within the chamber; drawing a predetermined volume of solution from the reservoir, through the first unidirectional valve, into the chamber; and to apply a raised pressure within the chamber, drawing the determined volume of solution out of the chamber, through the second unidirectional valve. The second connecting portion comprises a check valve being arranged to allow gas, but not the solution, to flow in and/or out of the chamber via the second connecting portion. The disposable cartridge is simple and inexpensive to manufacture.

Abstract: A biased normally open check valve assembly for facilitating Multiair® engine start-up after extended periods of non-use. The check valve is biased in an open position and allows for the ventilation of air out of the system so that the engine can start. The check valve also comprises a metering groove in a valve seat. The metering groove is configured to allow a controlled flow of hydraulic fluid through the check valve when the check valve is in a closed position.

Abstract: Disclosed is a check valve for a variable capacity compressor of a vehicle, which includes a valve seat including a refrigerant introduction hole, a valve case disposed above the valve seat, and including refrigerant discharge holes along a circumferential surface of a cylindrical body thereof, a spool valve disposed within the valve case to selectively open and close the refrigerant introduction hole and the refrigerant discharge holes, and an elastic member disposed between the valve case and the spool valve.

Abstract: Inlet control valves for use with fuel delivery systems are described. An example inlet control valve includes a first body portion having a first coupling to define an inlet of the control valve and one of a plurality of fasteners or a plurality of slots opposite the inlet. A second body portion coupled to the first body portion to define a fluid flow passageway, where the second body portion has a second coupling to define an outlet of the control valve and the other one of the plurality of fasteners or the plurality of slots opposite the outlet. The first plurality of slots receives the first plurality of fasteners when the first body portion is coupled to the second body portion. A valve is pivotally coupled relative to the first and second body portions to control fluid flow through the passageway.

Abstract: A head for dispensing liquid as a drip, includes a nozzle onto which a channel for ejecting the liquid leads. Air sucked in from the outside is returned through the channel in the opposite direction. In the nozzle, on the ejection channel, the drip dispensing head of the invention includes a valve functioning as a non-return valve for the circulation of the liquid being ejected. A mobile disc of the valve is produced so as to selectively enable air to pass through the valve when the disc is bearing against the seat thereof in a position for closing the liquid ejection channel. The disc is returned to the position by negative pressure applied upstream, which tends to suck in outside air. The disc is advantageously made of a microporous material, which provides antibacterial filtering of the return air.

Abstract: In a solar generator, comprising a reflector and an electrohydraulic sun-position tracking device with at least one hydraulic cylinder and a hydraulic control seat valve, the reflector can be guided via the control seat valve to follow in synchronism with the course of the sun continuously and uninterruptedly. The control seat valve for regulating a pressure medium flow permanently supplied to the hydraulic cylinder comprises a seat surface and a sealing surface permanently pressed against each other with variable contact pressure, with which the pressure medium flow can be generated as controlled leakage. The sealing surface is made of a material that can be deformed by contact pressure. In the control seat valve, the controlled leakage is set in a control position at least substantially without lifting movement exclusively by the relative material deformation of the sealing surface on the seat surface, which deformation is set via the contact pressure.

Abstract: Embodiments of the invention are directed toward a novel pressurized vapor cycle for distilling liquids. In some embodiments of the invention, a liquid purification system is revealed, including the elements of an input for receiving untreated liquid, a vaporizer coupled to the input for transforming the liquid to vapor, a head chamber for collecting the vapor, a vapor pump with an internal drive shaft and an eccentric rotor with a rotatable housing for compressing vapor, and a condenser in communication with the vapor pump for transforming the compressed vapor into a distilled product. Other embodiments of the invention are directed toward heat management, and other process enhancements for making the system especially efficient.

Abstract: A solenoid valve assembly is adapted to control product flow through a dispensing system. The dispensing system includes a housing. A plunger is disposed within the housing and has a first axial surface. A stopper is also disposed within the housing and has a second axial surface facing the first axial surface. At least one flow pathway is provided on at least one of the first and second axial surfaces.

Abstract: A valve assembly for a fluid system is provided. The valve assembly includes a damping component to reduce undesired pressure fluctuations within the system. The valve assembly includes a valve guide member and a valve member at least partially situated around the valve guide member. The valve member may be slidable relative to the valve guide member. The valve member is configured to move between a first valve member position that substantially permits fluid flow from the fluid system through the valve assembly, and a second valve member position that substantially prevents fluid flow from the fluid system through the valve assembly. A metering hole is formed on the valve member and adapted to dampen the motion of the valve member from the first valve member position to the second valve member position.

Abstract: A valve assembly is provided that is suitable for use as an air release valve. The valve mechanism is actuated by liquid forced through an orifice by a diaphragm under pressure from the main discharge and is less prone to valve chatter under varying pressure conditions. The use of an externally adjustable orifice and/or regulator allows the valve assembly to operate satisfactorily in a wide range of pressures. The mode of operation of the valve mechanism is externally visible.

Abstract: A device for regulating the flow rate of air feeding a turbine ventilation cavity of a turbomachine turbine section is disclosed. The device includes at least one tubular duct opening into a take-off cavity and leading into a turbine ventilation cavity, the pressure inside the take-off cavity being higher than the pressure inside the turbine ventilation cavity; an air flow rate regulation valve disposed in the tubular duct, the valve being suitable for moving under the effect of the pressure difference between the take-off cavity and the turbine ventilation cavity; and a mechanical return device for holding the valve in a maximum closure position for the duct so long as the pressure difference between the take-off cavity and the turbine ventilation cavity remains below a predetermined threshold pressure.

Abstract: A reductant dosing system for a machine having an engine and an exhaust system is disclosed. The reductant dosing system has a tank configured to hold a reductant, a dosing arrangement, and a supply passage connecting the tank to the dosing arrangement. The reductant dosing system also has a purging arrangement configured to direct purge fluid to at least one of the dosing arrangement and the supply passage, and a valve configured to allow reductant to pass from the tank to the supply passage and to inhibit purge fluid from entering the tank.

Abstract: A pressure sensitive valve device for use with respiratory equipment of the type that produces a pressurized flow of breathing gas. The valve device combines the exhalation and entrainment functions in one valve with a single air path. The valve device provides an exhaust valve function during normal operation and provides a less restricted access to the ambient atmosphere in the event of respiratory equipment malfunction. The valve device includes a valve element that moves between at least two positions. During normal operation, when the pressure generating system is generating a flow of gas, the valve element is in a “closed” or “exhaust valve” position. When in the exhaust valve position, the gas flow to the atmosphere is restricted without being completely blocked off. When the flow of gas is decreased or interrupted, the valve element moves to the “entrainment valve” or “open” position that allows a greater, i.e., less restricted flow, of gas between the user and the ambient atmosphere.

Abstract: In one aspect of the present invention, it is contemplated that a valve includes a passage. A first sealing element is biased to restrict flow of a fluid in a first direction through the passage when an upstream volumetric flow rate of the fluid in the first direction is less than a first predetermined threshold. A second sealing element is biased to unrestrict flow of the fluid to a baseline unrestricted flow rate in a second direction through the passage when an upstream volumetric flow rate of the fluid in the second direction is less than a second predetermined threshold.

Abstract: A check valve has a valve body, a piston and a spring. The valve body has a tube, a nozzle and a valve seal. The tube has a sealing protrusion and an inner surface. The sealing protrusion is formed around the inner surface of the tube. The nozzle is combined with the tube and has an insert hole and multiple outlets. The valve seal abuts a shoulder of the sealing protrusion. The piston is mounted in the valve body and has a shaft, a sealing ring and a plug. The shaft is mounted through the insert hole. The sealing ring is mounted in the sealing groove. The plug is a conic frustum and is mounted on a plug end of the shaft. The spring is mounted around the shaft. In operation, the check valve regulates outflow volume under varying pressure to prevent a waste of water.

Abstract: A flush valve according to the present disclosure includes a pressure compensating device for toilet and urinals to ensure consistent flush and bowl refill volumes. Certain flush volume limits may required for compliance with federal, state and local regulations regarding water usage. The flush valve can adjust water flow rates within the prescribed water usage limits and does not sacrifice the toilet's bowl washing and waste removal capabilities.

Abstract: The invention provides a priming pump comprising a deformable envelope associated with an inlet endpiece and an outlet endpiece each fitted with a moving valve member, the endpieces being arranged in such a manner that when the valve members are in the closed position, the outlet endpiece presents a leakage rate that is greater than the leakage rate of the inlet endpiece.

Abstract: The invention relates to a compressor, particularly for air conditioners in motor vehicles, comprising a safety device for limiting high pressure, whereby the safety device is hermetically sealed until first responding, after which it slowly reduces the system pressure.

Abstract: A variable venting assembly for an inflator, the assembly comprising: a nozzle having an inlet opening and an outlet opening; a valve member movably mounted to the nozzle for movement between an open position and a closed position, the valve member having a shaft member and a head portion secured to the shaft member, the head portion being configured to seal the outlet opening when the valve member is in the closed position; a biasing member located between a portion of the nozzle and a surface of the shaft member, the biasing member providing a biasing force to maintain the valve member in the closed position; and a bleed orifice providing a fluid path through the nozzle, the bleed orifice providing the fluid path regardless of the position of the valve member.

Abstract: A check valve includes a housing with an inlet opening and an outlet opening along with a cage-like insert disposed therein as a support for a spring element and for guiding a closing body which can be moved against the spring element and which can be moved between a first end position, in which the spring body lies in contact with a seat to form a seal, and a second end position, in which the valve is completely open. The closing body, which is constructed cylindrically and pot-like, is guided with its cylindrical casing surface at the cage-like insert and in contact with the seat with a flat outer surface.

Abstract: A leaky check valve for preventing sudden decompression while allowing the air to exit at a safe and slow rate. The valve comprises a hollow cylindrical connector typically equipped at either ends with a coupling means. This connector holds on the inside a) an annular valve seat in the shape of a truncated cone, oriented such that the truncated apex of the cone faces the inlet, and the inner surface of the cone faces the outlet. The inner surface of the valve seat is indented with at least one radial groove; b) a ball positioned within the cylindrical connector, between the annular seat and the outlet; and c) a ball restraint located between the ball and the outlet.