Abstract: A linear compressor includes: a frame comprising a body portion, a flange portion extending from a front side of the body portion along a radial direction of the body portion, and a bearing communication hole that is in fluid communication with a front surface of the flange portion and an inner circumferential surface of the body portion, a cylinder coupled to the body portion, a piston that is disposed in the cylinder and that is configured to reciprocate along an axial direction of the cylinder, and a valve member that is disposed at the frame and that is configured to open and close the bearing communication hole based on a pressure of air between the cylinder and the piston.

Abstract: A method of flushing a toilet that includes opening a first valve to introduce a first supply of grey water into a passage to prime a siphon; opening a second valve to introduce a second supply of water into a bowl from a tank, the bowl having an outlet that is in fluid communication with an inlet of the passage; closing the first valve to shut off the first supply of water; evacuating the contents of the bowl through an outlet of the passage by way of the siphon generated by the introduction of the first supply of water and the introduction of the second supply of water; and closing the second valve to shut off the second supply of water.

Abstract: Stands for glue and other applicators are described. The stand may include a seal that allows a user to place the applicator nozzle in the hollow interior of the receptacle without the cap without fear of the liquid in the nozzle clogging or drying out.

Abstract: An extendable drain configured to move between a retracted position and an extended position includes a housing and a drain member. The housing includes a top, a bottom, and a sidewall including an annular stretchable sleeve. The housing defines an interior volume configured to be at least partially filled by a fluid causing the annular sleeve to stretch axially, thereby increasing a distance between the top of the housing and the bottom of the housing. The drain member includes an open top fixed to the top of the housing, an open bottom, and a sidewall extending between the top and the bottom of the drain member through the interior volume of the housing. At least partially filling the interior volume of the housing moves the drain member axially causing the sleeve to stretch, thereby increasing the distance between the top of the housing and the bottom of the housing.

Abstract: Valves are described for intravenous (IV) catheter assemblies for controlling fluidic flow. The valve can prevent blood leakage in multiple access use situations. A thinner area of the valve around a slit is provided. The thicker area of the valve is to provide rigidity to the valve so that it is able to return to a closed configuration when a Luer connector is removed.

Abstract: The invention relates to a valve (1) for mounting to a surface (2) and for use in a flow path, which flows through said surface (2), for permitting flow in said flow path in a first direction and for preventing flow in said flow path in a second direction being opposite to the first direction. The valve (1) comprises: one or more ports (21) defined by a plurality of lips (22), wherein each lip (22) is resiliently deformable from a first position, in which the lips (22) are in contact with one another in order to close the respective port (21), to a second position, in which the respective port (21) is opened in order to permit flow in the first direction, and one or more contacting structures (30) arranged to mechanically contact the surface (2), when the valve is mounted to the surface (2), such that the one or more contacting structures (30) bias the lips (22) into the first position.

Abstract: The present invention provides a microjet drug injection device equipped with a backflow prevention valve, the microjet drug injection device comprising an upper housing, a lower housing, a partition, and the backflow prevention valve provided with a slit through which a drug passes at a lower end and allowing the drug to move only towards an injection nozzle.

Abstract: An annuloplasty ring including elastic features that make the ring optimal for receiving a subsequent prosthetic valve via a “Valve In Ring Procedure.” The elastic features provide a squeezing force on the native valve annulus that both ensures coaptation of the native valve leaflets and also prevents paravalvular leakage around a subsequently-placed prosthetic valve.

Abstract: A shower assembly includes an inlet port, a reservoir, and a plurality of drop outlets. The inlet is for receiving water from a water source. The reservoir receives water from the inlet port and is not pressurized by a line pressure of the water source. Each of the drop outlet ports is configured, such that water passes from the reservoir, through the plurality of drop outlet ports, forms a drop at each drop outlet port, and falls from each drop outlet port only as discrete drops of water.

Abstract: According to one example, a valve for an apparatus configured to mix bone cement is disclosed. The valve can include a base defining a first portion of a passage. The passage can be configured to allow a component of the bone cement through the valve. The valve can include a projection extending from the base to a base opposing end and forming a second portion of the passage that communicates with the first portion. The projection can have a frustoconically shaped surface that comprises one of an outer surface or an inner surface that forms a part of the second portion of the passage.

Abstract: An asymmetrical check valve has an inlet end, a transition part and an outlet end, with a pair of vertically orientated lips. The check valve is asymmetric about a horizontal longitudinal plane through a center axis through the inlet end. The upper portion of the transition part increases upwardly, from the inlet end to the outlet end. The lower portion of the transition part increases downwardly, but with less of an increase when compared with the upper portion of the transition part. The inlet end includes a flange or a cuff. The vertically orientated lips may have variable rigidity along their height, and a support may be used to maintain the orientation of the upper portion of the transition part.

Abstract: Compressible heart valve annulus sizing templates suitable for minimally-invasive or otherwise reduced accessibility surgeries. The sizing templates may be folded, rolled, or otherwise compressed into a reduced configuration for passage through an access tube or other such access channel. Once expelled from the access tube the sizing templates expand to their original shape for use in sizing the annulus. The templates may be formed of an elastomeric polymer material such as silicone, a highly elastic metal such as NITINOL, or both. Grasping tabs or connectors for handles permit manipulation from outside the body. A NITINOL wireform may be compressed for passage through an access tube and expelled from the distal end thereof into a cloth cover to assume a sizer shape.

Abstract: A regulating piston for a pressure regulating shut-off valve comprises: a tubular sleeve; a first closed end; a second open end; a port defined in the tubular sleeve between the first and second ends, arranged to permit fluid flow between the exterior and interior of the regulating piston; and a support structure disposed within the piston arranged to direct fluid flow between the port and the second open end. The piston can be included in a pressure regulating shut-off valve, and methods for manufacturing the piston and valve.

Abstract: Disclosed herein are devices, designs, methods of manufacturing and using medical devices comprising expandable bodies for treating saccular vascular aneurysms and occluding segments of blood vessels and other biological conduits. Exemplary expandable bodies include hollow gold structures that can be folded, wrapped, and compressed, joined to a delivery device, advanced to location in the body of patient in need of treatment, expanded by injection of a fluid into the central void, and separated from the delivery device, remaining in place in an open, expanded form without the addition of support structures to the central void. Other expandable bodies include coiled wires that can be loaded into delivery catheters and expelled from the delivery catheters using pusher devices. Also disclosed herein, are methods of using multiple medical devices and expandable bodies where the expandable bodies are placed adjacent to each other to occlude a saccular aneurysm.

Abstract: In accordance with an embodiment of the present invention, a washing machine may be provided to be able to automatically add a liquid detergent into a tub. The washing machine in accordance with an embodiment of the present invention includes a detergent box for containing a detergent or rinse; a detergent supply pump for pumping the detergent or rinse contained in the detergent box; a connection pipe connected to the detergent supply pump and a tub; and an open/close unit for opening or closing the connection pipe, wherein the open/close unit is configured to open the connection pipe only when the detergent or rinse is pumped by the detergent supply pump.

Abstract: The present teachings provide devices and methods of reshaping the right heart and reducing tricuspid valve regurgitation. Specifically, one aspect of the present teachings provides an inflatable device to be deployed in the space between the sternum and the right heart. An injectable medium is injected to the cavity of the device. Once the device is filled, the device is detached from the delivery system, and released inside the body. The inflated device exerts pressure to the right heart, changes the shape of the tricuspid annulus, and allows a better coaptation of the tricuspid leaflets.

Abstract: A gearbox isolator (10) is provided to allow the gas within a gearbox cavity (50) to expand and contract in a manner that prevents the ingestion of airborne contaminants such as moisture and particulate matter. The gearbox isolator utilizes a breather bladder (22), a check valve (36) for venting gas to the atmosphere when the breather bladder is filled to capacity, and a desiccant filter (32) to provide make-up air to the gearbox when the breather bladder is empty. The desiccant filter is provided in a sealed canister (34) having a check valve (38) allowing atmospheric gas into the sealed canister when needed.

Abstract: An assembly for delivering a prosthetic heart valve to a native heart valve is disclosed. The assembly includes a self-expanding prosthetic heart valve formed with an expandable metallic stent and a flexible valvular structure. The assembly also includes a delivery apparatus having a delivery sleeve. The delivery sleeve includes a selectively steerable section and a distal portion for retaining the prosthetic heart valve in a compressed state. A handle is coupled to a proximal end of the delivery sleeve and a pull wire extends from the handle to the steerable section of the delivery sleeve. The handle preferably includes a rotatable portion for actuating the pull wire and thereby selectively controlling a curvature of the steerable section during advancement through the patient's vasculature. In preferred embodiments, the steerable section includes a flexible metallic tubular portion formed with a plurality of circumferentially extending openings.

Abstract: There is provided a breather structure of an actuator in which the breather structure is provided in a housing of the actuator, the breather structure including: a recessed groove positioned on an outer surface of the housing; a breathing hole which is positioned on a bottom surface of the recessed groove and passes through the housing in a first direction; a filter fixed to an inside of the housing so that the filter closes an opening of the breathing hole; a lid body which partially covers a region of the recessed groove including the breathing hole from an outside of the housing when viewed from the first direction; a breather opening portion positioned at a portion of the recessed groove exposed from the lid body; and a protrusion portion which protrudes from the bottom surface of the recessed groove to a side of the lid body.

Abstract: A method for creating a vacuum in a storage bag can be used to create a vacuum without the use of an external vacuum source. The vacuum storage bag has a resilient sponge compressible polymeric material mass such as a sheet of sufficient thickness that is an integral part of an internal wall of a storage bag. A vacuum can be produced by compressing the sponge within this sealable bag. When the sponge is an integral part of the internal bag wall, it will not shift nor interfere with a valve or bag closure. A vacuum may be created by compressing the resilient sponge material along with a food product, dry goods, or any other material that is to be stored. This results in forcing the air volume out of the sealable bag. Any residual air not exhausted from bag will be trapped within sponge material when sponge expands.

Abstract: Methods and devices to facilitate positioning of a catheter into a vessel. Devices include axially concentric assemblies of a piercing needle and a dilator that guides an outer catheter into a vessel, such as a blood vessel. The assemblies described herein can include retraction mechanisms and/or lock mechanisms to control needle positioning during catheterization processes as well as improved valves that prevent leakage of fluid from the proximal end of the devices. The devices and method include the use of novel valves to prevent undesired leakage of fluids through the proximal end of the catheter.

Abstract: Methods and apparatus for treating bones, including, in one or more embodiments, methods and apparatus for treatment of vertebral fractures that include a containment assembly for cement containment and/or a balloon assembly for maintaining vertebral height. A containment assembly comprising a containment jacket adapted to be deployed inside bone; and a dividing wall that separates the interior of the containment jacket into a proximal region and a distal region, the dividing wall having an opening for providing access to the distal region from the proximal region.

Abstract: A valve (1, 11, 19) for an inhalation device comprising an interior volume that is delimited at least partially by a valve wall (4, 17, 21), a permanent opening (29) as well as a valve functional area (6), whereby the valve functional area (6) is configured to be at least almost closed below an opening pressure difference and to be open above an opening pressure difference such that above the opening pressure difference, a fluid can flow through the permanent opening (29) into the interior volume and out of the valve functional area (6), the valve comprising an inversion protector that is configured to impede or prevent inversion of the valve wall (4, 17, 21).

Abstract: The invention discloses an overshot control gate for use with trapezoidal irrigation channels. A gate has a rigid rectangular section adapted to, in use, be pivotally mounted to a base of a trapezoidal irrigation channel. A pair of triangular sections are pivotally mounted on opposite sides of the rigid rectangular section. Each of the triangular sections are divided into first and second triangular sections with a common apex at the base of the trapezoidal irrigation channel. Each of the first triangular sections are rigid and adapted to, in use, be pivotally mounted to opposite side walls of the trapezoidal irrigation channel. Each of the second triangular sections including the pivotal mounting on opposite sides of the rigid rectangular section are formed of a flexible material. Also disclosed is a pipe flow meter and a duckbill valve.

Abstract: A metered dose inhaler (“MDI”) applicator is disclosed that includes a carrier, a housing, an adjuster and a lever. The carrier defines an aperture configured to receive a boot of a MDI. The housing is configured to be assembled with the carrier and to move in a vertical direction within the MID applicator relative to the carrier. The adjuster is configured to move between a locked position and an unlocked position, wherein when the adjuster is in the locked position, the adjuster is configured to prevent the carrier and the housing from moving in one or more directions relative to one another. The lever is pivotally connected to the housing and is configured to transfer a force applied to the lever to a canister of the MDI and to actuate the MDI to dispense an aerosolized medicine.

Abstract: Systems, devices, and methods for delivering selected amounts of scented, pasty wax mixtures for different applications of candle warmers, and compositions of scented, pasty wax mixtures which have extended fragrance lifespans. The warmers can include devices that melt the scented, pasty wax mixture, where the devices plug into vehicle accessory power outlets inside of vehicles or plug into wall power outlets or utilize solar power. The devices can include removable cartridges with or without sponges that can soak up the melting scented, pasty wax mixture to be disbursed throughout the space so that fragrances pass into the spaces. The scented, pasty wax mixture can include therapeutic essential oils to be dispersed throughout the spaces in high enough concentrations to provide the desired therapeutic availability.

Abstract: One-way valve devices can be used within fluid systems. For example, this document provides one-way valves that can be installed within a lumen of a tube, a fitting, and other types of tubular members. In some embodiments, the one-way valve includes a unitary frame and a ball member that is loosely constrained within the confines of the frame.

Abstract: An underwater welding apparatus includes: an underwater welding head provided underwater and having, at its leading end, a nozzle section from which laser light is emitted; a shied cover formed of an elastic member and provided around the nozzle section so as to form, at the leading end of the underwater welding head, a space where water is excluded by shield gas; and an expansion/contraction member having a discharge hole for discharging water and shield gas containing metal dust particles from an inside of the shield cover, the discharge hole being increased in diameter as pressure inside the shield cover rises, while being reduced in diameter as the pressure inside the shield cover falls.

Abstract: A catheter hemostasis valve hub for a catheter or introducer sheath has a generally tubular shell with a first region and a second region having a greater thickness than the first region, a pre-slit hemostasis seal within the shell, and an end cap to retain the hemostasis seal within the shell having a web section. The hub is easily cut or slit after introduction of the catheter without prior breaking.

Abstract: Apparatus and techniques for securing a medical device with hemostasis valve are described.

Abstract: Capsule (9) for use in a beverage preparation machine (1), said capsule comprising side (10), bottom (12) and top (11) walls defining a closed chamber, said chamber containing an ingredient to be dissolved and/or extracted by a fluid injected under pressure within said capsule, said fluid being provided through an injection element (20) of the machine that is able to pierce an injection wall of the chamber, said capsule further comprising a beverage dispensing wall able to open for releasing a beverage prepared from said ingredient and said fluid, said capsule comprising a separating wall (14) within the chamber that separates, in a leak-tight manner:—an ingredient-containing compartment (15), and—a fluid injection compartment (16), said separating wall (14) comprising a one-way valve (17) able to let fluid under pressure flow only from the injection compartment (16) towards the ingredient-containing compartment (15).

Abstract: Stent delivery systems and methods for making and using stent delivery systems are disclosed. An example stent delivery system may include an inner member. A sheath may be disposed about the inner member. The sheath may include a compressible coil. A stent may be disposed between the inner member and the sheath. A membrane may extend between the inner member and the sheath. The membrane may be configured to be disposed on the stent. An outer member may be disposed over the sheath.

Abstract: A sealing member is disclosed for use with a wick of a diffuser, or the like. The sealing member seals a vessel containing a liquid in a fluid chamber. The sealing member may be composed of a malleable material that may also be resistant to a liquid fragrance contained in the vessel. The sealing member may include a body, flaps and an opening for receiving a wick therethrough. The sealing member may form a persistent seal when a wick is inserted therethrough, while at the same time allowing venting to the fluid chamber.

Abstract: A fitting (10) for a sanitary unit outlet (5) has a tubular housing (12) having an inlet (14) and an outlet (16), a grid (18) associated with the housing inlet (14) and a one-way valve (20) associated with the housing outlet (16). The housing (12), grid (18) and one-way valve (20) are removable from the sanitary unit outlet (5) as a single entity.

Abstract: An injection needle assembly includes an injection needle, a fitting portion, and a hub. The fitting portion is formed into a cylindrical shape and has one end serving as a fitting opening. The fitting portion includes a female taper shape in which an inner diameter of a cylindrical hole of the fitting portion becomes smaller toward an inner side. The hub includes the fitting portion for holding the injection needle. The injection needle assembly is used such that the female taper shape of the fitting portion is fitted to a drug discharge tube, which has a male taper shape in which an outer diameter of a cylinder becomes smaller toward a tip. When the male taper shape of the drug discharge tube has a taper ratio of N/100, the female taper shape of the fitting portion 12 is formed to have a taper ratio of M/100, where M>N.

Abstract: A cannula seal is presented. The cannula seal includes a cap portion that fits over a cannula and a valve portion. The valve portion includes an hourglass seal and a cross slit seal. In some embodiments, the cap portion includes a tab. In some embodiments, the cap portion and the valve portion are integrally formed. In some embodiments, the cap portion and the valve portion are joined at a bonding region, which may include overflow traps. In some embodiments, ribs are included.

Abstract: A bottle, including a bottle body having a bottom aperture through a bottom end thereof and a top aperture through a top end thereof opposite the bottom end; a top valve assembly that extends through the top end of the bottle body and allows for selectable dispensing of fluid disposed within the bottle body out therethrough; a flexibly invertible dish coupled about the bottom aperture, wherein in a stored mode the dish is coupled about an outer surface of the bottle body and in a deployed mode the dish is inverted with respect to itself in the stored mode and extends outwardly from the bottom end of the bottle body forming a concave surface within which fluid may be disposed; and a bottom valve assembly that may extend through the bottom end of the bottle body and allows for selectable dispensing of fluid disposed within the bottle body out therethrough.

Abstract: A method for making teat unit including providing a support body and a securing part, the support body including a plurality of recesses, forming a teat by overmolding the teat over the support body and over the recesses of the support body so that the teat covers the recesses, and overmolding the teat over an upper edge of the securing part, thereby forming a connection between the securing part and the support body which connects the securing part to the support body. In another method, the support body and the securing part are already one single piece and the teat is overmolded at least over the support body.

Abstract: A tube passage sealing system for allowing passage of a tube from the interior to the exterior of a case such that the case is sealed against fluid intrusion whether a tube is present or absent. The tube passage sealing system generally includes a case having a first portion and a hingedly connected second portion. The portions may be closed together to define a compartment in which a device may be positioned. A tube seal assembly is included which allows a tube leading from the device within the compartment to exit the case through a passage formed in the assembly. The tube seal assembly generally includes a first tube seal and second tube seal which combine when the case is closed to seal around the tube. Some embodiments may include blocking portions on the tube seals which will act to seal the passage when a tube is not present.

Abstract: An elastomeric valve includes a barrel having one or more walls defining an interior fluid pathway. The barrel is deformable between a non-deformed state and a deformed state. The elastomeric valve further includes a gate assembly of two or more gate elements forming a tapering volume projecting into the fluid pathway from the one or more walls of the barrel. In at least some examples, each gate element joins the barrel at a reduced cross-section that forms a hinge of that gate element. The two or more gate elements interface with each other along one or more gate boundaries to collectively block the fluid pathway in the non-deformed state and separate from each other along the one or more gate boundaries in the deformed state to permit fluid flow through the gate assembly.

Abstract: A surgical instrument for applying sutures to tissue includes a needle deployment mechanism and a catch mechanism. In some embodiments, the needle deployment mechanism employs a linear path. Alternatively, it can employ a curved needle. The surgical instrument may include a rotatable head, a bend, and/or a malleable elongated body member formable into various shapes.

Abstract: A method for dispensing a frozen confection is provided the method comprising: providing a refrigerated, insulated chamber, which houses at least one container, containing a frozen confection at a temperature of ?12° C. or below; wherein the at least one container has an outlet which is closed by a self-closing valve; wherein the container comprises flexible bag containing the frozen confection located inside a bottle; pressurizing gas in the region inside the bottle and outside the flexible bag thereby applying pressure to the frozen confection so that the valve opens and the frozen confection is forced out of the container through the outlet; releasing the pressure so that the valve closes. An apparatus is also provided.

Abstract: An environmental (weather) protective cover for a vent conduit. In accordance with some embodiments, a flexible body portion is adapted to cover a distal end of a vent conduit coupled to an upstream pressure source. A flap supported by the body portion has a flap slot opening. The body portion and the flap have a closed mode in which the vent conduit is sealed and an open mode in which the body portion and the flap slot opening are expanded when pressurized fluid discharging from the vent conduit is sufficient to flex the body portion and increase the slot opening to discharge the pressurized fluid. The body portion and the flap return to the closed mode when the pressurized fluid has been released.

Abstract: An airbag includes a first chamber, a second chamber, and a gas flow channel connecting the two chambers. A valve is located inside the gas flow channel allows an unthrottled gas stream from the first chamber to the second chamber when a pressure inside the first chamber is higher than a pressure in the second chamber and blocks or throttles the gas stream through the gas flow channel when the pressure inside the second chamber is higher than in the first chamber. The valve includes a two-layered inlay extending from a first end pointing towards the first chamber to a second end pointing towards the second chamber. The two-layered inlay is connected to the gas flow channel at its first end via at least two connecting points being remote from each other.

Abstract: Disclosed is an inflation valve enabling a user to quickly inflate and deflate an inflatable object. The inflation valve can include an inflation chamber that is an adequate size to capture a breath of air blown by a user from a distance away from an outside opening of the inflation chamber. This allows surrounding air into the area of low pressure created by the moving air, thereby greatly increasing the amount of air entering the inflatable object. To prevent air from escaping the inflatable object, the inflation valve can include a non-invertible one-way valve and/or an invertible one-way valve. Each valve can prevent air from escaping the inflation chamber until adequate pressure is applied from the outside opening of the inflation chamber, for example, as a result of a user blowing air into the inflation chamber. The invertible one-way valve can be inverted to reverse the properties of the valve.

Abstract: The invention relates to a valve (300) comprising a base (301) in the form of a ring defining a central opening (309), as well as an upper surface (302) and a lower surface (303), both of which are planar and converge toward each other from the base (301) in the direction opposite said base, and characterized in that the upper and lower surfaces (302, 303) together form an angle (Ang) of at least 60°, and in that the free edges (304, 305) thereof define a slit (306) which is open when the valve is at rest.

Abstract: A pouch air valve used on a sealing pouch comprises a coupling duct and a piercing base. The coupling duct includes a duct, an air valve and a first suction plate. The piercing base has a piercing head and a second suction plate. The first suction plate surrounds and seals the duct to form coupling therewith. The piercing head has an airflow passage running through two sides thereof. The second suction plate surrounds and seals the piercing head to form coupling therewith. The piercing base is positioned at one side of the sealing pouch while the duct is directly aligned and coupled with the piercing head from another side of the sealing pouch so that the piercing head can pierce through the sealing pouch to allow the first and second suction plates to attract each other and anchor on the sealing pouch which serves as separation.

Abstract: A vent system for an axle of a heavy-duty vehicle includes a check valve and an exhaust tube that is connected to the check valve. The check valve includes a first end that is mounted on the axle, a second end, and a body that is disposed between the first and second ends and is in selective fluid communication with the axle interior. The exhaust tube includes a first end that is mounted on the second end of the check valve, and a second end that is open to atmosphere and is in fluid communication with the check valve body. Using any one of a number of types of configurations for the valve body, the vent system selectively exhausts air from the axle interior to atmosphere to relieve buildups of pressure in the axle, while protecting the integrity of the check valve and preventing contaminants from entering the axle.

Abstract: A nonlinear air stop valve of an air sealing body includes an inner member having left arcs on one side and right arcs on the other side, and both left and right arcs are asymmetrically arranged sideway, and a breach is formed at the bottom of the left and right arcs and on a concave arc surface, and left and right arcs are arranged from top to bottom, such that air entering from an air inlet at the top of the inner membrane flows along an upper arc of the left and right arcs to a lower arc and is blocked by the concave arc surface to flow to the breach and pass through the right arc, breach, left arc and breach in turn from right to left or from left to right into an air outlet at the bottom of the inner membrane and enter into the sealing body.

Abstract: An embodiment includes a drain pipe waste water closure protection device which allows passage of fluids through a drain into a pipe waste water closure and a waste water pipe while preventing backflow of fluid or gas from the waste water pipe and pipe waste water closure, as well as preventing evaporation of a water-containing pipe waste water closure located below the drain pipe waste water closure protection device in the waste water pipe. Embodiment drain pipe waste water closure protection devices are easily installed in existing or new drains. Embodiments have two radial disc seals which insure a strong seal between the drain pipe waste water closure protection device and the drain wall. Embodiments include a reinforcing band embedded below the radial disc seals which prevents failure of the radial disc seals. Embodiments include a quadruple pressure accumulating seal which protects against the flow of gas or fluid from the waste water pipe.