Abstract: The present invention relates to a cleaning composition suitable for cleaning stains on surfaces. The invention also relates to a kit for cleaning surfaces, especially stained surfaces, comprising a cleaning composition of the invention as a first component and an absorbent as a second component.

Abstract: An acoustic ceiling removal tool and associated method are provided wherein an elongated tubular handle defines a longitudinal cavity, and a scraping head is connected to a distal end of the handle. The scraping head has a manifold with a proximal end in fluid communication with the longitudinal cavity and an opposing open end defining a comparatively larger cross sectional area than the proximal end, a scraper blade supported by the manifold to dispose an operative scraping edge of the scraper blade adjacent the open end of the manifold, and an elastomeric boot sealingly engaging the proximal end of the manifold and extending therefrom to circumscribe the open end of the manifold.

Abstract: A device for collecting debris from a well comprises a fluid injection conduit injecting circulating fluid into the area of the well to be treated, a fluid collection pathway for the recovery of fluid and suspended debris, and a collection chamber for the collection of debris suspended in the fluid. The collection pathway is helical, and typically the collection chamber is also helical. Typically, the boundary between the collection pathway and the helical collection chamber is defined by vanes, typically including a groove capable of forming a watertight seal with a sleeve fitting substantially over the device. Devices may include a baffle located above the uppermost edge of the helical collection pathway to direct matter into the collection chamber. Methods to the use of the device to collect debris from the well can include multiple devices, each adapted to collect debris of different sizes.

Abstract: Disclosed are a nozzle cleaning apparatus and a nozzle cleaning method, which are capable of effectively cleaning a nozzle for discharging a process liquid to a substrate, with a simple structure and a low cost. A nozzle 30 is accommodated in a cleaning container 2 having a funnel-shaped portion 2b. A solvent T as a cleaning liquid is supplied along an inner surface of the funnel-shaped portion 2b. The solvent T forms a vortex flow whirling around the nozzle 30. By exposing the nozzle 30 to the vortex flow, the nozzle 30 can be effectively, thoroughly cleaned.

Abstract: A vacuum cleaner includes a dust collector that compresses dust stored inside a dust container to minimize the volume of the dust. The dust collector would include one or more pressing plates that are used to compress the dust stored in dust collector. Various methods are used to control movements of the movable pressing plates to facilitate the compression operations. Also, various methods are used to determine when the dust collector is full and needs to be emptied.

Abstract: A vacuum cleaner includes a dust collector that compresses dust stored inside a dust container to minimize the volume of the dust. The dust collector would include one or more pressing plates that are used to compress the dust stored in dust collector. Various methods are used to control movements of the movable pressing plates to facilitate the compression operations. Also, various methods are used to determine when the dust collector is full and needs to be emptied.

Abstract: A method for removing debris from a turbine component includes routing a cleaning composition comprising fluosilicic acid through an internal passage of the turbine component, without contacting an external surface of the turbine component, to remove the debris.

Abstract: A mechanical cleaning apparatus and associated method are provided for cleaning the castings of a system, such as a grate-kiln induration system during pelletizing operations. The cleaning apparatus and method can clean castings of the system without adversely affecting their life span through rapid temperature changes or via abrasion to the castings during the cleaning process. The mechanical cleaning apparatus could have raised, narrow sections that are spaced at the same spacing as the slots in the castings to engage the casting surface and the slots under pressure. The sections can drop into the slots during operation of the system to punch out the undesirable build up material in the slots.

Abstract: Systems and methods for cleaning sludge from a large tank. The sludge from the interior of storage tanks is mobilized using a metered flow agent stream and then subjected to a mechanical comminution or high shear action, e.g. by grinding or chopping. This produces a pumpable slurry which is then recirculated back into the tank to further mobilize sludge.

Abstract: Methods and systems for operating a facility which stores large quantities of petroleum. When the large storage tanks need cleaning or sludge abatement, the sludge from the interior of storage tanks is mobilized using a metered flow agent stream, and then subjected to a mechanical comminution or high shear action, e.g. by grinding or chopping. This produces a pumpable slurry which is then recirculated back into the tank to further mobilize sludge. This cleaning technique results in a faster cleaning process. This also provides a process which is less exposed to uncertainties in the composition of the sludge, e.g. to how much rust or scale is present in the sludge. Since the duration of downtime for cleaning is shorter AND less uncertain, tank cleaning can be scheduled into smaller schedule gaps, resulting in less capital cost (for downtime) and lower maintenance budget overall (since developing leakage problems can be caught sooner).

Abstract: A produce washer includes a holder to position a single piece of produce and a nozzle disposed at a horizontal distance adjacent to the holder. When the produce is a cored lettuce head, the cored lettuce head is positioned in the holder with the cored portion facing the nozzle disposed across the horizontal distance. When the cored lettuce head is positioned in the holder, the nozzle directs a stream of cleansing liquid across the horizontal distance into the cored portion.

Abstract: A dishwasher includes an inlet port for filling the dishwasher with fresh wash liquid, a wash chamber for collecting the wash liquid, and a discharge port fluidly coupled to the wash chamber for purging used wash liquid. The dishwasher further includes a control system operatively coupled to the inlet port and to the discharge port to control partial filling and partial purging of the wash liquid.

Abstract: With a method of cleaning cylinders (5) and/or rolls (5), e.g., working rolls (5) in a rolling stand, which are used for producing a rolled stock (1) such as strips or slabs, wherein a liquid is sprayed onto the cylinders (5) at high pressure through several nozzles D1-Dn, a number of nozzles (D1-Dn) are stationary arranged in and/or on a nozzle beam (10), at least one on-off valve is associated with each nozzle (D1-Dn), and one or several nozzle(s) (D1-Dn) are sequentially switched on and off one after another starting from one end of the nozzle beam. The invention further relates to a corresponding apparatus.

Abstract: A composition having a first nonionic alkoxylated alcohol surfactant having an HLB value ranging from about 10 to about 15, a second nonionic alkoxylated alcohol surfactant having an HLB value ranging from about 16 to 20, an aqueous solvent, and optionally, a bio-film permeation agent. A total of the first surfactant and the second surfactant in the composition ranges from about 2 to about 20 percent by weight of a total weight of the composition, and a ratio of the second surfactant to the first surfactant in the composition ranges from about 2:1 to about 4:1.

Abstract: A system and method for control of water content in a strip bath. The method to control water content in a solvent bath used for cleaning of semiconductor parts in the back end of semiconductor manufacturing requires addition of water to replace evaporated water. This is done by periodically adjusting a conductivity setpoint at least in part based on the elapsed chemical bathlife and at least in part based on the number of semiconductor parts that have been processed in the bath. The conductivity of the strip bath solution is then continuously measured (as by using an electrodeless conductivity probe). Water is added (as by a DI water injection system) into the bath solution whenever the solvent conductivity falls below the conductivity set point.

Abstract: An apparatus is provided for the separation of a resin from a reaction mixture. The apparatus comprises a column fitted with a side port, two inlet/outlet ports, and two flanges. Each flange is fitted with a multilayer net screen supported by a support grid. The column itself is attached to a support structure. A process is provided for using this apparatus to remove a resin from a reaction mixture, wherein the reaction mixture is added to the apparatus and the resin is filtered off, remaining in the column as the waste leaves. The remaining resin is then washed and eluted to provide a purified product.

Abstract: An agent to remove paint, lacquer, rubber, glue, plastic or similar from objects. The agent in accordance with the invention contains: *aromatic alcohol and/or ester and/or glycol ester with the characteristic of being partially soluble in water, *water, *alkali salt of unsaturated and/or saturated fatty acid and/or reaction product between aliphatic amine and alkali salt of unsaturated and/or saturated fatty acid, and *aliphatic amine. The invention also relates to an application for the agent.

Abstract: A sanitation system for a refrigerated fixture having an air curtain. This sanitation includes a spray manifold positioned in a case tank of the refrigerated fixture. A reservoir is provided which is adapted to contain disinfectant. A pump is provided to pump disinfectant from the reservoir through the spray manifold, whereby disinfectant is sprayed into the case tank. A controller is connected to the pump and adapted to control the frequency and duration of the spray through the spray manifold.

Abstract: A liquid processing system includes a liquid processing section including liquid processing units horizontally disposed therein and each configured to perform a liquid process while supplying a process liquid onto a substrate; a process liquid storing section that stores the process liquid to be supplied to the liquid processing units of the liquid processing section; and a piping unit including a supply pipe configured to guide the process liquid from the process liquid storing section to the liquid processing units. The process liquid storing section, the piping unit, and the liquid processing section are disposed inside a common casing in this order from below. The supply pipe of the piping unit has a horizontal pipe portion horizontally extending along an array direction of the liquid processing units, such that the process liquid is supplied from the horizontal pipe portion to the liquid processing units individually.

Abstract: Systems for cleaning sludge from a large tank. The sludge from the interior of storage tanks is mobilized using a metered flow agent stream and then subjected to a mechanical comminution or high shear action, e.g. by grinding or chopping. This produces a pumpable slurry which is then recirculated back into the tank to further mobilize sludge.

Abstract: A deposit removing device capable of efficiently removing deposit on a plate-like member such as a metal plate or resin plate by reducing a spacing distance between the plate-like member and an injection nozzle, and also capable of coping with the removal of deposit on the plate-like member rolled or conveyed at a high speed. This deposit removing device removes the deposit adhered to the plate-like member (T) by jetting compressed air from at least one jetting hole (101) of a nozzle body (100) in which the at least one jetting hole (101) is formed. This device is configured so that the nozzle body (100) is supported so as to be movable in a direction (W1) substantially perpendicular to the surfaces (T1 and T2) of the plate-like member (T).

Abstract: The wheelchair umbrella includes an umbrella section with a circular canopy. Such a canopy has a center region statically attached to the top ends of the arms. The apparatus further includes a pair of coextensively shaped rectilinear arms with top ends directly connected to the umbrella section, a mechanism for removably attaching bottom ends of the arms to associated ones of the handles of the existing wheelchair, a mechanism for storing and transporting the wheelchair umbrella during non-operating conditions, and a mechanism for securing the storage and transport mechanism to the existing wheelchair during operating conditions.

Abstract: Radially disposed ribs for supporting the canopy of an umbrella are pivotally connected by a crown mounted on the outer end of a rod. A sleeve is in external sliding relationship with the rod. Struts are pivotally connected to the sleeve, each strut being associated with one of the ribs for splaying the ribs and collapsing them inwardly. A support tube is connected by a coaxial shaft to the rod, and the sleeve is telescopically received in the support tube. The shaft is threaded and rotated by motor, opposing ends of the threaded shaft being supported for rotation in first and second journals fixed within the support tube and the rod, respectively. A threaded nut fixedly connected to the sleeve is engaged with the threaded shaft for moving the sleeve along the rod between extended and retracted positions.

Abstract: A cane includes a top. The cane includes a shaft having a first compartment, a second compartment and at least a third compartment. The top is connected to the shaft. The cane includes a first flask for holding fluid and removably disposed in the first compartment. The cane includes a second flask for holding fluid and removably disposed in the second compartment. The cane includes at least a third flask for holding fluid and removably disposed in the third compartment. A method for storing materials in a cane. A method of forming a cane.

Abstract: A method and apparatus for a wildlife viewing blind is described. The blind is configured to resemble a large tree trunk and may be adapted to blend into the natural surroundings of any wooded environment. The blind includes a covering that closely resembles the bark of a tree, and includes a plurality of apertures for viewing wildlife. At least one of the apertures may include an extension adapted to resemble a broken tree limb. The covering also includes an opening into a partial enclosure that is sized to receive a human.

Abstract: The present invention relates to a thermoelectric conversion system for receiving heat by radiation from a heat source and an efficiency improving method of the thermoelectric conversion system, the system including at least one thermoelectric conversion module 5 having at least a pair of thermoelectric elements 2, a heat receiving zone 6 placed not to contact a heat source 3 for receiving heat by radiation from the heat source 3 and a radiating zone 7 positioned on an opposite side to the heat receiving zone 6 and cooled by a coolant 4, generating electric power by a temperature difference between the heat receiving zone 6 and the radiating zone 7, a continuous or divided heat receiving surface 18 formed by one or a plurality of surfaces facing the heat source 3 of the heat receiving zone 6, and each of the heat receiving surface 18 is given a different quantity of heat from the heat source 3, the system comprising the heat receiving surface 18 has a plurality of different emissivities according to the quant

Abstract: The thermoelectric conversion module is provided, comprising a plurality of thermoelectric elements, and respective thermoelectric elements are electrically connected by metal caps attached to both ends of each thermoelectric element. In addition, the metal cap may be integrally formed with electrodes on both ends of each thermoelectric element.

Abstract: A thermoelectric conversion device and a manufacture method thereof are provided. The manufacture method includes an electrode board stamping process, an insulating frame molding process, a punching process, an element fixing process, a bending process and an insulating frame integrating process. Band-shaped plate members which function as heat radiating fins and heat absorbing fins and are integrated with insulating frame members are respectively folded-back in such a manner that the folding-back directions of the band-shaped plate members are alternately reverse to each other in the longitudinal direction of the band-shaped plate member. The insulating frame members are joined to each other to be arranged substantially in line, to construct an insulating frame unit. Thus, the component number and the assembly labor can be reduced, while the manufacture quality and the product quality can be improved.

Abstract: The present invention relates to thin film solar cell structures and methods of manufacturing them, particularly tandem cell structures and components thereof. In one aspect there is provided a polycrystalline thin film solar cell structure that is semi-transparent and allows a predetermined wavelength range of light to pass therethrough, in which a bottom semi-transparent conductive layer includes at least one of a ruthenium oxide, an osmium oxide and an iridium oxide. In another aspect there is provided a tandem cell structure in which a top cell bottom contact layer includes at least one of a ruthenium oxide, an osmium oxide and an iridium oxide. In a preferred aspect, the tandem cell structure contains a single contact layer between the absorber layer of the top cell and the absorber layer of the bottom cell. In a particular aspect, this single contact layer is a ruthenium oxide layer.

Abstract: A light distribution system is used in a method for converting solar or artificial light into electricity by collecting, concentrating and time-sharing light to a number of photovoltaic cells. A convergent lens and an optional optical collimator provide an intense parallel beam directed onto a spinning mirror reflecting the beam in a radial plane to its axis of rotation and time-distributing it to a number of photovoltaic cells which are in an inside surface of a cylinder in the plane. The apparatus has DC or AC output capability, in accordance with the connecting pattern of the PV cells and is protected against burnout due to spinning mirror failure by stopping the beam at a window. A light pipe can be used to carry the light from the collector to the mirror. The device can be used to transmit power in a laser beam to a remote station such as a robot.

Abstract: Disclosed is a lightweight reflecting system for the concentration of solar radiation in which the reflecting optic is approximately sinusoidal in cross section and is maintained in this shape by minimal contact with a support frame. The reflector can be a flexible rectangular sheet deformed into a generally sinusoidal trough by compression between fixed or adjustable end supports. The sinusoid can be adjusted to be less than half a cycle by torsion applied to each end of the flexible sheet. A reflective film, polished metal, or similar material on the reflector surface can concentrate sunlight along a diffuse band rather than a sharp line, providing improved concentration levels for photovoltaic cells. The reflectors and their support frames can be mounted singly or severally on a tracking device that maximizes instantaneous power output by orienting the collectors toward the sun.

Abstract: An invention to passively track the sun for the purposes of collecting, filtering and concentrating sunlight simultaneously and variously onto a photovoltaic cell, a heat collection device, and a thermally activated cooling device for the PV cell in order to efficiently and economically produce electrical power. The invention comprises a holographic light gathering element that also splits the light frequencies and focuses to two or more points or lines. The light frequency is split such that the UV wavelength of interest for PV cell operation is split from all the other wavelengths and focused on the PV cell or light conducting media that will direct the UV to the PV cell location. The other wavelengths of the solar spectrum are focused on a different location that can be simply a “throw-away” of this excess heat or it can be usably focused on a bulb or pipe which collects the heat.

Abstract: The present invention provides a solar cell module comprising at least one encapsulant layer which has 1) a total thickness of from about 0.1 to about 20 mils and 2) at least one surface layer made of ionomers containing a finite amount of polymerized residues of ?-olefins and from about 18 to about 25 wt % of polymerized residues of ?,?-ethylenically unsaturated carboxylic acids. The present invention also provides a process of manufacturing the solar cell module.

Abstract: The present invention provides a thermoplastic film or sheet comprising two surface layers made of acid copolymers, or ionomers, or combinations thereof and at least one inner layer made of ethylene acrylate ester copolymers, a solar cell module comprising at least one encapsulant layer derived therefrom, and a process of manufacturing the solar cell module.

Abstract: The present invention relates to configuring and wiring together cells in TF PV modules. According to one aspect, cells are fabricated on one plane on a top surface of a substrate, with wiring patterned on a parallel plane, and vias formed to provide connections between the cell plane and wiring plane. In one embodiment, the wiring plane is on the back surface of the substrate and vias are formed through the substrate. In another embodiment, the wiring plane is on the top surface of the substrate underneath the cell plane and an insulating layer, with the vias formed through the insulating layer. In another embodiment, the cell plane formed on the top surface includes superstrate cells that are illuminated through a transparent substrate, with an insulator between the cell plane and an upper wiring plane. According to another aspect, the heavy bus bar connections in the wiring plane can carry large currents and do not block light impinging on the cells.

Abstract: An optoelectronic device comprising at least one nanostructure-film electrode is discussed. The optoelectronic device may further comprise a different material, such as a polymer, to fill pores in the nanostructure-film. Additionally or alternatively, the optoelectronic device may comprise an electrode grid superimposed on the nanostructure-film.

Abstract: An optoelectronic device comprising at least one nanostructure-film electrode and fabrication methods thereof are discussed. The optoelectronic device may further comprise a different material to fill in porosity in the nanostructure-film. Additionally, the optoelectronic device may be a solar cell, comprising at least one of a variety of photosensitive active layers.

Abstract: A solar cell module includes a photovoltaic element, a light receiving surface side protective member disposed above a light receiving surface of the photovoltaic element, and a back surface side protective member disposed above a back surface opposite to the light receiving surface side of the photovoltaic element. The photovoltaic element includes an indium oxide layer formed on a surface facing the back surface side protective member and another indium oxide layer formed on a surface facing the light receiving surface side protective member. An arithmetic mean roughness (Ra) on a surface of the indium oxide layer on the back surface of the photovoltaic element is larger than an arithmetic mean roughness (Ra) on the light receiving surface of the photovoltaic element.

Abstract: A photovoltaic element is obtained which allows use of a low-melting solder and can suppress reduction in reliability and output thereof due to mechanical stress or water intrusion. The photovoltaic element has a photoelectric conversion layer and a collector electrode provided on at least one surface of the photoelectric conversion layer. Characteristically, a collector electrode covering layer for covering a surface of the collector electrode is provided and a tab electrode for electrical connection to an exterior electrode is provided on a top surface of the collector electrode through the collector electrode covering layer. A portion of the collector electrode covering layer that lies between the tab electrode and collector electrode comprises a solder layer and another portion of the collector electrode covering layer that covers a lateral surface of the collector electrode comprises a thermosetting resin layer.

Abstract: The present invention relates to a novel, unconventional methods and systems for the fabrication of silicon or silicon-germanium photovoltaic cell applications. In some embodiments high purity gaseous and/or liquid intermediate compounds of silicon (or silicon germanium) are converted directly to polycrystalline films by a thermal plasma chemical vapor deposition process or by a thermal plasma spraying technique. The intermediate compounds of silicon (or silicon germanium) are injected into the thermal plasma source where temperatures range from 2000 K to about 20,000 K. The compounds dissociate and silicon (or silicon germanium) is deposited onto substrates. Polycrystalline films having densities approaching the bulk value are obtained on cooling. PN junction photovoltaic cells can be directly prepared by spraying, or doped films after heat treatment are subsequently transformed to viable photovoltaic cells having high efficiency, low cost at a high throughput.

Abstract: A system for reducing pressure drop associated with turbulent fluid flow through subsea conduits. Such reduction in pressure drop is accomplished by transporting a hydrate inhibited drag reducer through a long conduit of small diameter, and thereafter injecting the drag reducer into a host fluid at the subsea location, to make a treated fluid. The treated fluid is then extracted from the subsea location via a production/transportation conduit. The presence of the drag reducer in the treated fluid reduces pressure drop associated with flow through the production/transportation conduit.

Abstract: The present invention provides a fluid flow prevention apparatus for a wet barrel fire hydrant which is simple and inexpensive to install and effectively cuts off water flow while reducing water hammer. The fluid flow apparatus includes an in-line or non-hinged valve member for closing a flow passageway connected to the hydrant that is operably movable from an open to closed position upon damage to the hydrant. An adjustable damping member controls the rate of closing of the valve member to reduce the effects of water hammer.

Abstract: A high pressure transducer is disclosed. The transducer includes a supply inlet configured to provide a gas supply to the high pressure transducer at a supply pressure and a pressure divider section coupled to the supply inlet. The pressure divider section is configured to reduce the supply pressure to a reduced pressure as a function of a first predetermined ratio. The transducer also includes a low pressure control section coupled to the pressure divider section and configured to receiving the gas supply at the reduced pressure and an amplifying section coupled to the low pressure control section. The low pressure control section varies the reduced pressure to produce a variable control pressure to actuate the amplifying section in response thereto. The amplifying section is also configured to multiply the variable control pressure as a function of a second ratio to obtain an output pressure.

Abstract: In a conventional storm overflow chamber of a combined sewer system, inflowing floating debris do not flow into an intercepting pipe in a rainy weather, and flow out to a public water body, causing a water pollution in the public water body. According to a vortex flow type water surface control device for a draining device of the present invention, a control plate (6) higher than at least a separating weir (1) is provided between an opening of an inflow pipe (2) and an opening of an intercepting pipe (3) in a storm overflow chamber of a combined sewer system. Moreover, a guide wall (7) higher than at least the separating weir (1) is provided along the separating weir between the opening of the inflow pipe (2) and the separating weir (1).

Abstract: A spill containment device for a fluid storage tank filling system including a threaded riser pipe extending from a storage tank and a drop tube including a flange at one end with a conduit extending from the flange, through the riser pipe and into the storage tank. The spill containment device includes a tubular base having an inwardly protruding shoulder adapted to receive the flange of the drop tube, lower threads below the shoulder adapted to mate with the threaded riser pipe; and upper threads above the shoulder. A receptacle is attached to the tubular base, the receptacle having an open upper end. A threaded compression ring is provided, the threaded compression ring adapted to mate with the upper threads of the tubular base and attach the drop tube to the tubular base.

Abstract: A valve box, a valve control device, an assembly thereof and a method are provided for accessing an underground valve and indicating presence and position of the underground valve. The valve box includes a support member having a tubular section; and a resilient tubular member telescoped slidably into the tubular section of the support member until reaching an lower end of the tubular section upper end of the resilient tubular member being extendable above the ground. The valve control device comprises a control rod having one end attachable to the underground valve and a control key including a key head, a key handle and a key stem. The key head has a cone-shaped cavity and a recess portion at the top of the cavity, the recess portion being dimensioned to engage a projection at the other end of the control rod.

Abstract: A valve box, a valve control device, an assembly thereof and a method are provided for accessing an underground valve and indicating presence and position of the underground valve. The valve box includes a support member having a tubular section; and a resilient tubular member telescopable slidably into the tubular section of the support member. An upper end of the resilient tubular member is extendable above the ground. Various elements are disclosed for stiffening the tubular member against deformation due to forces applied to it. The valve control device comprises a control rod having one end attachable to the underground valve and a control key including a key head, a key handle and a key stem. The key head has a cone-shaped cavity and a recess portion at the top of the cavity, the recess portion being dimensioned to engage a projection at the other end of the control rod.

Abstract: A constant flow regulator device for maintaining a constant flow of fluid when a variable fluid pressure is applied, comprising an inlet duct (506) for incoming fluid, a housing (500), and a movable partition (502) facing the inlet duct and being subjected to an elastic force. A fluid passage (510) of variable cross section area is formed between the inlet duct and the movable partition. The housing and movable partition form an inner compartment (504) in fluid communication with the inlet duct for establishing a fluid pressure inside the inner compartment approximately equal to the fluid pressure in the inlet duct. The size of the movable partition is significantly greater than the size of the inlet duct such that, in use, the partition is moved towards the inlet duct against the elastic force when the fluid pressure in the inlet duct increases to reduce said fluid passage cross section area, and vice versa, thereby maintaining constant fluid flow.

Abstract: The invention concerns a valve (1) for use in a fuel line of a motor vehicle, comprising a sealing seat (7), a valve body (5) which closes the sealing seat (7) and a spring device (6, 16, 17), which pre-tensions the valve body (5) against the sealing seat (7). The side of the valve body (5) facing the sealing seat (7) has a contour (11) for deflecting the volume flow over an angle of greater than 90° and the outer diameter of the contour (11) is greater than the diameter of the sealing seat (7).

Abstract: A check valve stop assembly and method of retaining the check valve stop assembly in a check valve flow body without external fixation means, wherein the check valve stop assembly includes a threaded check valve stop insert and a check valve stop housing including a threaded interior sidewall that defines a void space therein. The check valve stop insert is inserted within the void space of the check valve stop housing by mating the threads of the check valve stop insert with those of the check valve stop housing. The check valve stop housing further includes an opening formed in the sidewall through which at least a portion of the check valve stop insert is accessible. The check valve stop insert that is accessible via the opening formed in the sidewall is either coupled to the check valve stop housing or mechanically deformed to prevent removal of the check valve stop insert from within the check valve stop housing.