Abstract: A manifold assembly is provided for delivering flowable solid material, such as pelletized resin, for example, from a silo to a plurality of delivery pipes leading to extruding machines. The manifold is provided with gate valves for each delivery pipe, the valves being self-cleaning and easily controllable. A base portion of the manifold has a plurality of gated delivery tubes, while a top portion has at least one delivery tube of a larger diameter. Circular mounting flanges with equally spaced bolt holes between the lower and upper portions of the manifold facilitate any desired relative orientation of the delivery tube of the upper portion with respect to those of the lower portion. Also the upper portion has a circular flange for mounting in any desired position of index on a matching flange of a silo or hopper.

Abstract: An easily sterilizable, low profile loading and unloading valve for mounting at the bottom of a tank includes a flange which is mounted adjacent to an opening in the bottom of the tank. A chamber extends through the flange, and a valve plug is mounted to one of the surfaces of the flange and extends into the tank opening. The valve plug normally closes the chamber in the flange, but is moveable to a position in which the chamber is opened to the tank. A cap is mounted to the other surface of the flange and closes the chamber. This cap may, alternatively, either take the form of a closure plate which closes the chamber during transport of the tank, or an adapter assembly which is mounted to the flange and which includes a connector for a loading and unloading conduit and a threaded biasing member for biasing the valve plug from its closed to its opened position.

Abstract: A molded plastic drain valve particularly adapted for use with automobile radiators to discharge fluid from a header tank. A drain housing or body of metal is attached by brazing to the tank wall and has an internally threaded bore therethrough terminating in a smaller drain opening encircled by a valve seat formed thereabout. A plastic valve has an external threaded portion and an axially faced sealing portion which moves to engage the valve seat of the housing. The assembly includes a unique means to prevent separation of the valve and housing including a stem which extends from the valve through the drain opening in the housing. It has a head or end portion of slightly less diameter than the drain opening and a small channel or groove located at its back side. A resilient washer member of elastomeric material is supported in the groove and its diameter is significantly larger than the drain opening.

Abstract: In accordance with the present invention, a container outlet valve assembly is provided surrounding a container outlet including a generally cone-shaped housing extending upwardly into the container, and including radially spaced outer openings in the cone for lading to flow out of the container. A cone valve is located within the housing containing spaced openings which align with the outer openings in the cone housing when the cone valve is in open position. A liner of low friction material is attached to the outer surface of the cone valve and/or the inner surface of the cone housing. The cone valve is rigidly attached to a vertically extending shaft which is journaled for rotation in a bearing in the cone housing. A hub extends radially outwardly from the lower portion of the shaft to the cone valve. The cone valve is rotatable to a closed position in which the valve body closes the openings located in the cone valve housing.

Abstract: In a bottom operable tank car lading valve assembly, a combination skid and lading valve seat for the lading valve closure is provided, which is attached to the tank car universal flange with mechanical fasteners. The valve seat portion extends inwardly and upwardly from the universal flange and includes a machined seat. The skid portion extends upwardly and outwardly from the universal flange, forming a circumferential taper, and the upper portion abuts the bottom of the tank. The skid portion protects the lading valve closure and the lading valve seat against impacts which might normally cause unseating of the valve closure and escape of the lading in the absence of the skid portion.

Abstract: Draining apparatus is provided for a fluid reservoir having an opening. The apparatus includes a guide housing connected about the reservoir opening and a fluid carrier conduit slidably positioned within the guide housing. The fluid carrier conduit is movable relative to the guide housing from a first nesting position to a second extended position for draining the fluid reservoir.

Abstract: In accordance with the present application, a bottom operable tank car valve seat and skid are made in separate pieces. The skid is welded to a skid mounting flange which is located below a tank car universal mounting flange. The skid mounting flange is attached to the universal mounting flange with fasteners. A ring is inserted into a slot provided in the upper, inner surface of the universal flange. Fasteners inserted into existing threaded openings in the universal flange hold the ring in place. A valve seat is mounted on the inner surface of the universal flange and the ring. The ring is held in place with fasteners which extend through the universal flange into the ring. These fasteners also hold in place an operator retainer to maintain the lading valve operator spaced from the walls of the valve seat and vertically fixed. With this arrangement the skid can be removed separately from the outlet.

Abstract: A valve assembly for evacuation of liquids from vessels of the type having a bottom wall provided with an outlet opening has a buoyant piston which forms part of a main valve and is movable to and from a closed position in which a sealing ring of the piston engages an annular seat surrounding the outlet opening. The upper surface of the piston is located below a liquid column in the chamber of a vertically movable housing having a valve member defining with a second sealing ring of the piston an auxiliary valve which is opened in response to depression of the housing to thus connect the chamber with the outlet opening whereby the pressure of the liquid in the chamber decreases. The difference of the pressure between the bottom of the vessel and the chamber pushes the piston upwardly because the effective area of the upper surface of the piston is larger than the effective area of its seat. Such upward movement is enhanced by the buoyancy of the piston.

Abstract: A fire-extinguishant mechanism comprising a thick-walled bottle containing pressurized fire extinguishant liquid. Liquid outflow from the bottle is through a poppet valve located at the lower end of the bottle; the valve discharges pressurized extinguishant in one or more preselected directions, depending on the location or application of the bottle system; valve actuation is by means of an explosive squib and/or explosive cartridge (as backup). The bottle is initially filled and pressurized through a multi-purpose fitting at the bottle upper end; a filler tube extends from the fitting downwardly into the bottle to introduce the pressurizing agent below the liquid extinguishant surface. The fitting is specially constructed to mount a charging valve, a pressure gage, rupture disc, and liquid deflection mechanism.

Abstract: In accordance with the present invention, the bottom operable tank car valve assembly described in U.S. Pat. No. 3,981,481 is simplified and improved and a supplemental sealing arrangement is provided. In the improved design, the valve body includes a flange portion which is attached to a standard tank car universal flange and an inwardly extending circumferential portion upon which a valve closure seats in closed position. The valve closure includes a keeper which maintains a circumferential elastomeric seal in place engaging the closure. Clearance is provided between the closure operator, and the valve closure so that if the circumferential seal softens, melts or burns, the closure can move vertically downwardly relative to the closure operator, and the valve closure will engage the valve seat on the valve body in place of the circumferential seal, to substantially prevent escape of lading from the tank.

Abstract: Draining apparatus is provided for a fluid reservoir having an opening. The apparatus includes a guide housing connected about the reservoir opening and a fluid carrier conduit slidably positioned within the guide housing. The fluid carrier conduit is movable relative to the guide housing from a first nesting position to a second extended position for draining the fluid reservoir.

Abstract: A valve device for draining liquids from a tank and, more particularly, a valve device for draining lubricating oil from an engine crankcase. The valve of the invention is characterized in having a generally tubular valve casing, containing a valve element spring-biased into closed position, which is permanently threaded into an opening in a tank. To open the valve and drain the contents of the tank, a pressing sleeve is inserted into the valve casing, this pressing sleeve serving to engage the valve element and unseat it as the sleeve advances into the casing by turning a cap nut which threads onto the casing, whereupon liquid will flow through the now-open valve and the pressing sleeve to a sump or the like.

Abstract: An engine oil pan having a threaded drain opening sealed by a removable plug. An auxiliary passage is formed in the plug, whereby the plug can be partially unscrewed from the drain opening to discharge metered quantities of water, sludge and similar impurities that accumulate from time to time at the bottom of the pan. The metered flow can be easily stopped when it turns into clean oil.

Abstract: A bottom operable lading valve assembly for tank cars includes a valve closure plug movable between open and closed positions relative to a circular plug seat located within a valve body opening. A housing is affixed to the valve body with fasteners comprising a shear plane. The housing includes a generally vertical housing opening into which a rotatable valve operator is mounted comprising a lower tool connection portion, a shaft portion and an upper operating portion. The upper operating portion includes upper operator threads which engage an operating stem depending from the closure plug. The upper operating portion and the valve stem terminate on or above the shear plane. The valve operator shaft portion separates below the shear plane in the event impact causes the housing to shear off along the shear plane to maintain the upper operating portion, valve stem and closure plug in seated position to prevent escape of lading.

Abstract: An adapter for use with a bottom operable tank car valve assembly includes an upper attachment portion for quickly attaching the adapter to a bottom operable tank car valve guard assembly. The adapter includes a body portion having one or more spouts extending radially outwardly from the body portion to receive loading and unloading conduits. An adapter operator is provided having a lower tool connection portion and a vertical extension extending upwardly within the adapter for attachment to a valve closure operator located within the valve guard assembly for opening and closing the tank car valve. The present invention also includes a method of transporting lading from place to place utilizing the adapter for loading and unloading the lading and the valve guard assembly while the car is in transit to protect the valve closure from impacts in transit.

Abstract: A valve assembly for closing and sealing an inlet which is full of large granular dry material including a dome-like valve member mounted for rotation to open or close the inlet and a deformable resilient sealing ring which may be inflated by gas pressure to engage the valve member in its closed position to produce a gas-tight seal across the valve member, the sealing ring being arranged within the valve assembly to minimize abrasive wear on the ring from the granular material.

Abstract: A bottom operable lading valve assembly for tank cars includes a valve closure plug movable between open and closed positions relative to a circular plug seat located within a valve body opening. A housing is affixed to the valve body with fasteners comprising a shear plane. The housing includes a generally vertical housing opening into which a rotatable valve operator is mounted comprising a lower tool connection portion and an upper operating portion. The upper operating portion includes upper operator threads which engage an operating stem depending from the valve plug. The valve operator separates below the shear plane in the event impact causes the housing to shear off along the shear plane to maintain the closure plug in seated position to prevent escape of lading. During rotation of the valve operator in a direction to move the closure plug to open position, the closure plug wipes the plug seat.

Abstract: In a bottom operable railway tank car valve assembly, a valve closure is movable between open and closed positions relative to an opening in a valve body mounted in the tank bottom for loading or unloading the lading. An operator depends from the valve closure. The lower end is contoured to receive a tool for opening and closing the valve closure. A valve guard is attached to the valve body with mechanical fasteners which constitute a shear plane. The valve guard includes a hollow depending portion. A valve guard cap is attached to the depending portion. The valve guard cap includes a depending protrusion which extends below the depending portion, and a transverse portion which extends below, and is spaced from, the bottom of the valve operator. If the valve guard or the valve guard cap is impacted, the loads are transmitted up through the valve guard to the valve body. Horizontal loads may cause the valve guard to shear off along the shear plane.

Abstract: An O-ring seal for installation in an LP gas cylinder valve with a method and tool for installing the seal in the valve. The LP gas valve includes an outlet passage opening into a chamber within the main body of the valve which in turn is connected to a passage which opens into a cylinder tank. The outlet passage threadedly receives a hollow cylinder through which a stem projects. The stem includes an enlarged bullet shaped end projecting through an annular seat within the outlet passage and into a tapered portion of the outlet passage. An O-ring seal is installed on the annular seat effecting a seal between the valve and stem while spacing the enlarged bullet shaped end of the stem from the tapered portion of the outlet passage. A plate wrench has a hexagonally shaped hole through which a hexagonally shaped nut on the hollow cylinder projects. The wrench is used to tighten the stem with respect to the O-ring seal. Means are provided on the plate wrench for storing spare O-ring seals.

Abstract: In accordance with the present invention an air inlet and outlet valve is mounted within an opening in the top of a railway tank car. The valve is operable from the bottom of the car by means of a rotatable operating shaft which extends from the bottom of the car up through the tank to the top of the tank to operate the valve. The operating shaft includes an operator for raising and lowering the valve located at the bottom of the tank, and includes a shaft telescoping arrangement whereby the upper portion of the shaft telescopes relative to the lower portion of the shaft, as the top of the tank moves relative to the bottom of the tank.

Abstract: A valve for controlling the pressure within a tank to prevent excessive above or below atmospheric pressure conditions, including a pressure responsive valve and a vacuum responsive valve, wherein each valve includes a pallet with seals and blowdown rings of polytetrafluorethylene material, which is commercially marketed under the trademark Teflon. The pressure pallet includes guide means having Teflon parts, while the vacuum responsive valve includes hinge means having coacting Teflon parts. The breather valve includes structure defining a vertically extending vent structure having an opening arranged alongside the tank in which the valve is mounted, which opening is positioned to avoid being sealed by any normal buildup of ice and snow.

Abstract: A dishwasher has a cabinet which defines a cavity, an access opening into the cavity, and a door for said opening. A washing fluid reservoir in the cabinet beneath the cavity holds washing fluid for the dishwasher. A drain for the washing fluid reservoir is manually operable between open and closed conditions when the door is open. The drain is also interlocked with a door on the cabinet which covers the access opening such that when the door is closed, the drain, if previously open, is automatically moved to its closed condition to ready the reservoir for filling. Thus, attempting to fill the reservoir with the drain open will be effectively prevented.

Abstract: The drain device disclosed is for removing or draining oil from oil pans utilized on engines of automobiles and similar vehicles. The improved device is mounted in the oil drain outlet of the oil pan and includes a valve which, when opened, permits the oil in the oil pan to drain from the oil pan and which, when closed, prevents the draining of oil from the oil pan. The valve is actuated by a handle or knob which is mounted on the dashboard of the automobile or vehicle.

Abstract: This invention relates to an oil replenishing cartridge which is adapted for use in the air-eliminating operation from automobile hydraulic systems such as hydraulic brake or hydraulic clutch with one operator, and which is capable, upon being simply placed on a reserve tank for said hydraulic system, of automatically replenishing oil to a given level in said reserve tank.

Abstract: The toggle levers in a sliding gate valve operative to impart the compressive loading between the slide assembly housing and the teeming vessel are mechanically actuated to their engaged or released positions by the drive motor utilized to operate the slide frame. The toggle levers are attached to connecting rods which are, in turn, connected by a follower rod that extends across the path of travel of the slide frame. The follower rod can be positioned on one side of the slide frame or the other to alternatively engage or release the levers. During normal operation of the valve the follower rod is locked to the housing whereby the slide frame is free to move with respect to the toggle levers.

Abstract: The hydraulic control system including an accumulator includes a safety connecting means for connecting the accumulator to the system so that partial disengagement of the connecting means automatically vents the accumulator to the sump of the hydraulic system.

Abstract: A low profile port closure apparatus which consists of a port positioned on the vessel to be sealed, a threaded sealing means for effecting fluid-tight closing of said port, and pressure retaining manifold structure which enables sealing positioning and removal of the sealing means in said port, and which manifold means is removable from operative position.

Abstract: An automatic water tender is disclosed which waters a plant in accordance with the amount of moisture which has evaporated or has been transpired from the plant. The apparatus comprises a support base upon which a horizontal pivot shaft is pivotally mounted. A cantilever platform is rigidly mounted to the pivot shaft and a counter weight is mounted to the pivot shaft opposite to the cantilever platform. A plant container is supported by the cantilever platform, which contains the plant to be watered. The plant container on the platform is counter-balanced about the pivot shaft by the counter weight. A fluid reservoir is mounted on the support base in an elevated position with respect to the plant container. A valve means is mounted on the fluid reservoir and is operatively connected to the pivot shaft, for controllably conducting fluid from the reservoir to the plant container in response to the pivotal motion which the pivot shaft undergoes when the counter weight overbalances the platform.

Abstract: A box discharger for a large size container of liquid metal, can be mounted on the container and dismounted therefrom, by a single operator, with the aid of tiltable mounting means for mounting frames of stationary and slidable refractory plates on the container. The plates are held to the frames by a set-screw structure.

Abstract: The outlet valve of a container for fluids is suspended from such container by a spring-biased safety closure mechanism that is protected from damage and has an actuating mechanism that breaks away with the outlet valve on impact capable of causing the outlet valve to permit discharge of the contents of the container.

Abstract: A gate value having a sealing plate carried by a moveable element which through the coaction of a series of balls presses the sealing plate into a flow preventing position.

Abstract: A container closure, especially for mixing containers, which comprises a round closure dish, and a pressure medium operable cylinder-piston system connected to the discharge housing. The piston rod of the cylinder-piston system is operable to move the closure dish into and out of the opening of a container to be closed. In the cylindrical outer surface of the closure dish there is provided an annular groove having inserted therein a sealing element which in the closing position of the closure dish engages the guiding surface of the discharge opening in the wall of the container to be closed.

Abstract: A self-sealing dispensing valve for use on various containers. It is a simple two-piece device consisting of an outer housing having a dispensing outlet and an inner complemental valve member which ordinarily closes the outlet but which can be moved by finger pressure to open the outlet, and which will automatically return to its closed position when opening pressure is released. The housing has a flexible dome-shaped outer wall which embraces and is attached to a complemental dome-shaped rigid wall at the outer end of the valve member, which also has an axially inwardly extending flared sealing skirt. The skirt normally seats on the outlet, which extends radially through the correspondially tapered housing, but will be displaced axially inwardly to open the outlet, upon inward axial pressure on the outer dome-shaped flexible housing wall. Internal container pressure aids in the normal seating of the valve member.

Abstract: A crankcase drain assembly comprising a manually operated valve unit mounted in the crankcase drain opening and a disposable container of flexible sheet material connected to the valve unit by a flexible hose member. The valve unit includes a large diameter planetary knob to facilitate manual opening and closing of the drain valve and eliminate the need for separate tools. The valve unit also includes a concave inlet port for seating in the drain opening so its rim area extends no further than level with the crankcase floor, thereby enabling the used crankcase oil to drain completely.

Abstract: A valve assembly for use on the inside of an enclosed water receptacle or toilet. The valve assembly incorporates a circular valve plug with spherical seating surface to close a drain hole from the inside of the waste receptacle. A helical spring and telescoping alignment tubes urge the plug into the drain hole. A spherical joint is formed between the plug and the tubes and assists in the alignment of the plug with the drain hole. The center of rotation of the spherical joint and the spherical contact surface of said joint are located on the outside of the waste receptacle when the valve plug has engaged the edge of the drain hole.

Abstract: An internal safety shutoff and operating valve includes a housing defining a valve seat and a cylinder. A piston slidable in the cylinder includes a valve closure member engageable with the seat for closing the valve. A spring biases the piston toward the closed position, and an actuating assembly moves the piston against the spring to the open position. One set of main ports communicates with the valve seat between the valve seat and the cylinder, and the other set of main ports communicates with the opposite side of the valve seat. Pressure forces on the piston are balanced by a passage in the piston intercommunicating the cylinder with one set of main ports. In order to prevent leakage between the piston and the cylinder wall to the other set of ports, a seal assembly including a groove in the piston wall and a seal ring in the groove is provided. The groove includes rounded inner corners, and the seal ring is provided with inner and outer grooves interconnected by passageways.

Abstract: Disclosed is a tank bottom internal valve housing. A low profile valve housing with a valve such as a butterfly valve and a means for opening and closing the valve is assembled to a saddle on the tank bottom by a number of bolts located around the periphery of the valve housing and engaging in threaded blind holes in the tank saddle. A discharge nozzle is mounted on the lower face of the valve housing in such a way that the discharge nozzle mounting can be sheared away from the rest of the assembly during, for instance, an accident without affecting the integrity of the valve housing itself.

Abstract: A fabricated valve for use in loading a transportation storage tank with liquid, such as for instance gasoline or oil, and providing for coupling of the valve with a compatible loading coupler of a loading station used in loading the liquid into the transportation tank. The valve includes an outlet assembly portion for unloading liquid from the transportation tank. The valve is of relatively light weight, is economical to manufacture, and possesses large flow areas which cuts friction losses and turbulence of the liquid during loading and unloading operations.

Abstract: A manifold and valve structure for use with a multi-compartmented transportation tank for liquids, such as for instance a mobile gasoline or oil transportation tank. The manifold and valve structure represents a compact, comparatively lightweight arrangement which includes a plurality of adapter couplings for selective coupling of the structure to a source of the liquid or liquids to be transported in the tank compartments, with a valve coacting with each adapter coupling for controlling the flow of liquid from the multi-compartmented tank vehicle during an unloading operation, and making it possible for selective control of simultaneous discharge of liquid from a plurality of the tank compartments utilizing one discharge hose.

Abstract: A remotely controlled fluid pressure actuated internal emergency valve for the outlet opening of a liquid storage tank, for automatically closing the outlet port in the valve in the event of various emergency situations, and which also is adapted for bottom liquid loading or filling of the tank. The valve embodies means hydraulically balancing the movable housing of the valve, whereby the associated biasing means for the valve is effective to move the valve housing to closed position during bottom loading of the tank upon predetermined exhaustion of actuating fluid from the actuating pressure chamber of the valve. The valve is relatively simple in construction and highly effective in operation.

Abstract: The valve includes an upper or inner portion housing, a first spring which acts on the top of a valve member and normally urges it into sealing engagement with a seat, and a lower or outlet portion carrying an actuator pin having an inner end which disengageably abuts the underside of the valve member and is actuated to lift the valve member against the biasing force of the first spring. The valve actuator pin has a vent passage extending from its inner end to atmosphere. When the actuator pin is actuated to open the valve, the valve member covers the inlet of the vent passage. When the valve is closed, a smaller second spring, carried on the inner end portion of the valve actuator pin, urges the inner end of the actuator pin away from the valve member, thereby opening the vent passage inlet so that the portion of the valve body below the valve member is vented to atmosphere. This permits the discharge conduit connected to the valve to be gravity drained after the valve is closed.

Abstract: An internal tank valve having a seating plate defining a valve seat, a valve member, a straight line linkage supporting and guiding movement of the valve member to and from engagement with the valve seat, the valve member having a rounded surface facing the direction of flow through the valve seat, a pressure equalizing valve in the valve member, means for moving the valve member into and from engagement with the valve seat and means for absorbing shock loading on the valve member.

Abstract: A bottom outlet for tanks is provided including a valve body welded to an opening in the bottom of the tank. The valve body has an opening into which a retainer assembly is fitted to urge a seal into engagement with at least a portion of the valve body. The retainer assembly includes a threaded center portion and a retainer vertical portion having an opening therein. A valve plug is mounted to be vertically movable between closed and open positions, into and out of engagement with the retainer vertical portion. A lower housing is affixed to the valve body with mechanical fasteners which define a first shear plane. The housing has an opening into which a valve operator assembly is mounted. The valve operator assembly includes a first valve operator having a lower tool connection and a first operator extension. The first operator extension has a first valve operator opening into which a second valve operator is inserted and is drivably engaged.

Abstract: The sliding plate of a sliding gate valve has a mounting for a collector nozzle, and a nozzle is releasably coupled to the mounting by means of a releasable fastening which allows ready replacement of the nozzle when worn. The releasable fastening clamps the collector nozzle to its mounting and holds the nozzle in firm abutment with the underside of the sliding plate.

Abstract: A discharge valve assembly for a hot metal ladle having a discharge opening in the bottom thereof includes a heat resistant stopper positioned in the ladle for movement toward and away from the discharge opening and a vertical portion extending through the bottom of the ladle for actuating the same.

Abstract: A pinch tube type valve adapted to be mounted to a liquid container receiver to accept an elongated flexible outlet tube protruding from a liquid container disposed in the receiver for selective control of liquid flow through the tube from the container. The tube is passed through a passageway in the valve body for selective engagement by a stem which is reciprocable into and out of closing engagement therewith. The passageway is enlarged adjacent the inlet end of the valve body to permit easy insertion of the liquid container outlet tube therethrough. An apertured tube retaining area is disposed adjacent the outlet end of the valve body passageway to receive and retain the tube in a desired position relative to the container receiver to facilitate ease of liquid dispensing operations. The stem may also include a tube engaging protrusion arrangement when the valve is contemplated for use in pressurized liquid systems.

Abstract: A sliding gate valve has a sliding plate provided with an under-hung insulating member having a hollow nose, the hollow nose having a tapered bore in which a molten metal resistant liner is cemented, the liner being tapered to fit the bore and a frangible cement being used to detachably secure the liner in the nose so that the liner can be readily replaced when worn.

Abstract: A slide closure includes a housing, a fixed refractory plate positioned in the housing by a metal holding frame, a refractory slide plate positioned for sliding movement within the housing by a metal slide, and a housing closure closing the housing and having spaced rails for supporting the slide. Each side of the slide has a pair of projections contacting one rail. Each pair of projections is spaced by a distance substantially equal to the rail spacing. The holding frame is pivotally attached at a first end thereof to the housing and has at a second end thereof a stepped portion contacting the housing.

Abstract: A two position drain valve or cock is installed permanently in the threaded drain plug opening of an automotive crankcase. The spherical rotary valve element is operated by a crank arm arranged exteriorly of the valve casing on a valve actuating rotary shaft. The crank arm is shifted between valve open and valve closed positions by a push-pull cable assembly including a manual lever pivoted to a mounting bracket which is installed under the hood of an automobile at a conveniently accessible location. Detent means is provided to lock the manual lever in a valve closed position. The shipping package containing the apparatus in kit form may be utilized to receive the dirty oil.

Abstract: A valve assembly suitable for use as a draincock in an automobile radiator. The valve elements can be preassembled and installed in a stamped opening in a radiator tank by simple snap-in action. The assembly includes three elements: (1) an insert, (2) a threaded plug, and (3) a gasket that forms a seal between the plug and wall of the radiator tank.