Abstract: The fluid control device of the present invention combines a flow sensing unit in series with a control valve. The flow sensing unit is of the displacement piston type and the flow rate is electronically sensed. A single action poppet valve assembly facilitates the use of a self contained power supply for use in remote locations. A microprocessor monitors parameters including pressure, flow rate, temperature and flow volume, and is enabled to activate the control valve to the open or shut positions based upon any combination of the monitored parameters.

Abstract: A check valve wherein the housing has an inlet and a seat at one end and an outlet at the other end. The other end can receive a removable and reinsertable cage which serves to confine a selected one of several spherical and/or otherwise configurated valving elements to movements between a sealing position of engagement with the seat to seal the inlet from the outlet and an inoperative position in which the housing, the selected valving element and the cage define a path for the flow of a fluid from the inlet toward, through and beyond the outlet. The inserted valving element is biased against the seat by a spring or by the fluid when the pressure of fluid at the outlet exceeds the pressure of fluid at the inlet.

Abstract: A suction inlet pump, useful with pumper firetrucks, has a floating valve element which is normally biased closed by a spring. The motion of the floating valve is also positively determined by a cam engaging a shaft extending from the floating valve element and aligned with the cam. The cam is moved from a first position that positively holds the floating valve element completely closed to a second position which allows the floating valve element to fully open. By selectively positioning the cam between the completely closed and fully opened positions, the amount of water entering the valve may be selected so that the valve functions properly for the particular use to which it is put. The suction inlet valve includes a lockable operating handle which is used to rotate and position the cam. An indicator on the exterior of the valve housing indicates the position of the cam.

Abstract: A pressure responsive valve assembly for use in a decanting apparatus for a wastewater treatment reactor. The valve assembly includes a cylindrical valve plate, a valve member support structure, a valve spring, and a valve member comprising a valve stem and a valve head. A discharge passageway extending through the valve plate has a frusto-conical valve seat located therein. The valve head also has a frusto-conical design having an angle of divergence smaller than that of the valve seat so that when the valve head is biased against the valve seat by the valve spring, the valve seat sealingly engages a peripheral edge of the valve seat. The valve member support structure maintains the valve member in proper alignment with the valve seat and in engaging relationship with the valve spring.

Abstract: The valve is intended to contain a given residual pressure in the cylinder and is mounted in the cylindrical bore (16) of a connection piece (14) designed to be connected either to a circuit for using the gas, or to a circuit for filling or rinsing the cylinder. It comprises a closing member which is urged in the direction of its closure onto a seat (22) under the action of a spring (26) and counter to the action of the pressure of the gas in the cylinder. In order to permit the filling of the cylinder, the closing member is axially displaceable inside a bush (40) which is removably engaged in the said bore (16) while the spring (26) rests on an element designed to be secured either to the connection pieces (14) so as to keep the valve in the operative position, or to the said bush (40) so as to permit the axial disengagement of the valve together with the bush (40) and the said element.

Abstract: A check valve of the type having a valve body and a valve pin mounted to slide in the valve body includes on its exterior surface a raised annular ridge. This ridge defines at least one pair of wrench flats and has first and second annular shoulders, each on a respective side of the ridge. The first shoulder is shaped to retain a quick disconnect coupler in position on the valve body. The overall length of the valve body can be reduced because the same annular ridge defines both the wrench flats and the shoulder that retains the quick disconnect coupler.

Abstract: An improvement is obtained in the valve body construction of a check valve which is insertable into the interior of a flexible hose, which valve body comprises a valve body portion having one of an inlet port and an outlet port, and a valve end piece having the other of the inlet and outlet ports, wherein the valve end piece is formed with annular grooves extending in the circumferential direction thereof along the opposite sides across a joint surface between the valve body portion and the valve end piece. With this advantageous construction, there will be no burrs extending outwardly from the joint surface when assembled by welding the mating members.

Abstract: A check valve wherein a tubular housing confines a reciprocable valving element which is biased by a spring so that it normally engages a seat between the inlet and the outlet of the housing. The valving element is guided by a plastic core which is installed in the housing and has axially parallel guide members for the head of the valving element. One end of each guide member is integral with an annular stabilizing section which is received in a complementary internal socket of the housing, and the other end of each guide member is integral with an annular main section which is coupled to the housing by male and female detent members. The main section surrounds a sleeve-like bearing which guides a shank of the valving element.

Abstract: The present invention relates to a retention valve for liquid-bearing conduits, comprising a containment body provided with threaded sleeves for connecting to conduits, and, in its interior, with valve means suitable for cutting off the flow of a liquid. The containment body is provided in two parts of pressed sheet metal; the valve is characterized by small dimensions and an increased passage cross-section with satisfactory mechanical characteristics.

Abstract: Apparatus for streamlining a tractor-trailer truckcomprises an inflatable balloon bag member at an end of the trailer. Supporting attachments for the bag automatically lock when the bag member is inflated but may be easily disconnected once the bag is deflated. The attachments are hinged for loading door clearance, a top attachment being hinged forwardly of the end for swinging the deflated bag to one side of the trailer. A belt timber reenforces the bag between the attachments, the bag being otherwise self-supporting. Both front and rear bag members cooperate to significantly reduce aerodynamic drag and fuel consumption on long hauls.

Abstract: A steam injection valve for continuously injecting steam into viscous food products such as relishes, sauces, jams and jellies which are continuously pumped through a steam injection zone. The valve has a sanitary irrotational, interlocking valve stem-valve sleeve construction without substantial internal crevices and which has very low maintenance and may be readily assembled and disassembled.

Abstract: A check valve includes a housing with an inlet, outlet, and a predetermined size cavity. A spherical valve element is supported on a slidable stem which is supported by a support shaped like the valve element with a spring interposed therebetween to urge the valve element into a closed condition. A locking mechanism enables locking of the valve element in a fully open, fully closed, or unlocked free floating condition. In another aspect, the valve included a bleeder conduit to the inlet side. The invention is also the valve in combination with a fire engine pumper.

Abstract: A check valve particularly useful for water well applications. The valve components are positioned at the low pressure, downstream side of a flexible poppet. A flexible guide, shaped generally as an inverted top hat, snaps into place in an annular groove and responds to longitudinally directed forces from the water flow and a biasing spring to forcibly retain the guide in the groove. A stem affixed to the poppet slides within an aperture of the guide and restricts the poppet to generally longitudinal motion.

Abstract: A tire valve having a molded tubular plastic insert having a conical seat and adjacent the seat integrally molded inward radial ribs engaging and guiding a valve pin. To the pin is secured a valve element adapted to sealingly engage the seat. The insert is bonded within a molded rubber body.

Abstract: An improved boiler feed water deaerator is provided which includes a plurality of spray valve assemblies therein which are shielded to effectively eliminate undesirable valve chattering and vibrations resulting from the horizontal component of incoming feed water and turbulent water flow through the valves. The valves hereof include an elongated, tubular, open ended water flow-directing shield with a shiftable valve plug adjacent the outlet end thereof. The plug is secured to an elongated stem disposed axially within the shield, and support structure is provided for the stem adjacent the upper inlet of the shield for permitting reciprocation and limited pivoting movement of the stem and plug.

Abstract: A safety pressure relief device for a refrigerated liquified gas storage vessel having a large diameter valve seat mounted on the vessel, a valve closure movably mounted to engage the valve seat to close flow therethrough and to move away from the valve seat to relieve pressure in the vessel, a spindle extending through the seat and guided by a spider spanning the seat, a spring within the vessel biasing the valve closure toward the seat and means of preselected strength retaining the valve closure on the seat unitl a preselected maximum desired fluid pressure is reached within the vessel at which time such retaining means fails and valve closure moves to open position to provide large area relief of fluid pressure from the vessel.

Abstract: A guide for a poppet in a check valve includes an annular, cylindrical rim and a guide hub concentric therewith. At least one web extends radially from the guide hub to the rim. The outer periphery of the rim includes at least one projection defined at a position angularly spaced from the web. The projection is engaged by the inner periphery of the check valve such that the guide is held within the check valve, with a stem on the poppet extending through the guide hub. The guide hub includes at least one lug to engage the stem to prevent rotation of the stem relative to the check valve. The guide is formed of a smooth bearing material, and the rim thereof is capable of flexing, in the area where the projections are provided.

Abstract: A non-return valve having a guided obturator, guided at a stem portion and at a head portion within a guiding member situated within a chamber. The chamber has a shoulder portion which acts as a seat for the obturator head, and supports an annular flexible seal. The annular flexible seal is L-shaped, with a flexible lip which conforms to the contour of the edge of the obturator head. The obturator stem has a cruciform cross section.

Abstract: A pressure limiting valve having a valve disk which is pressed against a passage opening by the force of a spring braced against an abutment with the valve disk connected to a guide rod which passes through an opening of the abutment and movable relative thereto, the abutment and the guide rod being tilted relative to each other by means which apply a force eccentrically at the abutment and/or the valve disk.

Abstract: Improvements in a check valve are disclosed. The check valve contemplated is of the type used to halt fluid flow in a fluid-carrying pipe system, and comprises an annular seat adapted to be mounted in the fluid line, a head-mounting yoke, and a head carried by the yoke and adapted to slide axially into and out of fluid-sealing engagement with the seat. One improvement comprises a pair of valve sleeves extending, respectively, axially upstream and downstream of the valve seat; each valve has a mouth adapted for mating connection with adjacent fluid-carrying pipe structure. Each sleeve terminates adjacent the valve seat in a diagonal flange formation, and a clamp including a V-shaped collar fits over the sleeve flanges so as to urge the sleeves toward the valve seat and toward one another. A gasket having a U-shaped cross section provides a fluid-tight seal between the sleeves and seat.

Abstract: A valve is provided for operation within a substantially cylindrical conduit section having an internal threaded portion adjacent a radially inwardly extending shoulder. A cylindrical apertured valve guide having external threads adjacent one end and an internal circumferential groove adjacent the same end is disposed in threaded engagement with the internal threaded portion of the conduit with the end of the guide abutting said shoulder. An annular sealing gasket is disposed on said shoulder within said groove to provide a valve seat for a spherical shaped valve member which is provided with a cylindrical side portion which is slidable within said cylindrical guide. The valve member also has an axially extending stem extending through an aperture in the opposite end of said valve guide and a spring surrounds said stem to bias the valve member into engagement with the seat.

Abstract: A check valve having a body with an inlet and an outlet which are coaxially aligned and a valve element including a section of a sphere which is spring loaded urging the valve element towards and sealing against the inlet. The valve element is supported on a stem which is coaxially movable in the valve body. The body has a cavity of a cross-sectional area greater than the valve element by an amount at least as great as the area of the inlet whereby the valve avoids restricting the flow of fluid through the body. Locking means are provided for locking the valve element in the closed position.