Abstract: A barrel valve assembly for a fluid distribution manifold. A barrel valve body has an off-axis passage with substantially linear walls therethrough, allowing for a substantially linear relationship between fluid flow through the body and angular rotation of the barrel valve within the manifold. The barrel valve thus requires a smaller working environment for the valve assembly, providing benefits in terms of assembly size and weight.

Abstract: A plug that contacts both an upstream seat and a downstream seat based on a upstream spring creating first forces on the upstream seat and a downstream spring creating second forces on the downstream seat. The first forces may be in a downstream direction and the second forces may be in an upstream direction. Additionally, the upstream chamber and the downstream chambers may be dependent pistons that are configured to create dynamic forces acting upon the plug.

Abstract: Various valves capable of preventing distortion are disclosed. The valve comprises a metal member configured to have at least two sub metal members and a main body. Here, the sub metal members are included in the main body, and the main body is formed of plastic.

Abstract: A ball valve that includes a ball comprising an integrally formed single-component body that defines an external surface; a fluid passage extending through the body, the fluid passage defining an internal surface; and a plurality of internal chambers formed within the body, each internal chamber of the plurality of internal chambers being spaced from the external surface and being spaced from the internal surface; wherein when the ball is subjected to one or more stresses, a stress concentration is created within a release-by-milling zone of the single-component body, the release-by-milling zone being adjacent to the plurality of internal chambers. The ball is at least partially manufactured using an additive manufacturing process.

Abstract: A tap for producing and disconnecting a fluidic connection between at least two connector parts. The tap includes one connecting and disconnecting element, a manual actuating element for rotating the connecting and disconnecting element. The manual actuating element and the connecting and disconnecting element are coupled mechanically. The tap includes a main body having at least one connector part and an interior space for receiving the connecting and disconnecting element, the interior space includes a contact surface for being brought into contact with the connecting and disconnecting element.

Abstract: The sealing member includes a first sealing part and a second sealing part and a joining part connecting together the first sealing part and the second sealing part. The first sealing part extends to surround a peripheral edge of the first opening hole on the main body inner peripheral surface side. The second sealing part extends to surround a peripheral edge of the second opening hole on the main body inner peripheral surface side. The joining part is placed at a position where a mutual interval between the first sealing part and the second sealing part is the smallest in the circumferential direction. Each of the first joining end portion and the second joining end portion of the joining part is pressed outward in the valve radial direction by the valve body outer peripheral surface to be resiliently deformed.

Abstract: In one embodiment, a vacuum-actuated surgical grasper includes a suction head adapted to interface with patient tissue, a suction tube connected to and in fluid communication with the suction head, and a handle connected to the suction tube, the handle comprising an internal passage in fluid communication with the suction tube through which fluid from the suction tube can flow and a pivotable actuation lever that controls this flow through the passage.

Abstract: A valve structure with an elastic anti-leakage member includes a spool, a seat, and a switch. The spool body has at least one inner notch formed on the side of the spool body, and the inner notch has at least one elastic anti-leakage member installed in the inner notch. The spool is contained inside the seat, and the elastic anti-leakage member is located in the inner chamber of the inner notch and has a surface elastically abutting the internal cavity wall of the inner chamber.

Abstract: The invention concerns a disposable container (1), intended to contain at least one liquid component to be sprayed and having a bottom (3), at least one peripheral side wall (2) extending from the bottom (3) to an open end spaced apart from and facing said bottom (3), which is provided with a closable vent device (6), characterised in that the closable vent device (6) comprises an aperture (7) forming an air passage, provided in the bottom, and a rotary valve (8) mounted on an outer surface (3a) of said bottom (3) in the extension of the aperture (7), in order to close and open the air passage.

Abstract: According to various embodiments, a toilet bowl fill valve includes a valve body that has a cavity. A valve may be inserted into the cavity of the valve body. A handle may be integrated with the valve, and the handle may facilitate manual adjustment of the valve. The valve body attached directly to a body of a toilet fill valve.

Abstract: A connector for transferring fluid and method therefor. The connector may have a first port and a second port which may be coupled together at a main channel with a valve element therein controlling fluid flow through the first port. The first port joins the main channel to provide a fluid path around the valve element and through the second port.

Abstract: In an example, a selection valve of a fluid supply system is disclosed. The selection valve selectively couples a source of pressurized air to one of first and second fluid supply cartridges, in the fluid supply system, to provide fluid to a printhead, the one of first and second fluid supply cartridges being coupled to the source of pressurized air at a time and other fluid supply cartridge being vented to the atmosphere. The selection valve includes a sleeve to provide interconnections with the source of pressurized air, the first and second fluid supply cartridges, and the atmosphere. Further, the selection valve includes a core disposed rotatably inside the sleeve to selectively couple the one of first and second fluid supply cartridges to the source of pressurized air and the other fluid supply cartridge to the atmosphere for switching the pressurized air between the first and second fluid supply cartridges.

Abstract: A ceramic lined valve comprising: •i) a valve body (20) having an end connection (50) for coupling the valve in fluidic communication with a fluid flow conduit; •v) a flow control member (22) within the valve body; characterized in that the ceramic lined valve further comprising: •vi) a lining (30) within the valve body comprising a single piece of ceramic, wherein the lining extends from the flow control. member to the end connection, the lining defining a valve seat abutting the flow control member, and •vii) a ceramic covering (40) forming a coupling face of the end connection, separate from and juxtaposed to the lining.

Abstract: A valve structure with an elastic anti-leakage member includes a spool, a seat, and a switch. The spool body has at least one inner notch formed on a side of the spool body, and the inner notch has at least one elastic anti-leakage member installed in the inner notch, and the seat has an inner chamber with an internal cavity wall. The spool is contained in an inner of the seat, and the elastic anti-leakage member installed in the inner chamber of the inner notch of the spool body has a surface elastically abutting against the internal cavity wall of the inner chamber of the seat to achieve a good water anti-leakage effect.

Abstract: An automatic ring valve comprising a valve seat provided with a plurality of gas flow passages arranged according to at least one annular row, at least a shutter comprising at least one ring-shaped portion for selectively closing and opening the gas flow passages, wherein the ring-shaped portion of the shutter comprises a fiber-reinforced matrix, at least one contrasting member for contrasting an opening movement of ring-shaped portion of the shutter, wherein the ring-shaped portion of the shutter comprises continuous fibers, at least some of the fibers developing for at least 360° of the annular development of the ring-shaped portion.

Abstract: A medical personal-services suction handle includes a hand-graspable housing and a primary suction pathway disposed through the hand-graspable housing and having a suction line port at one end and an intake port at an opposing end thereof. An on/off valve disposed at least partially within the primary suction pathway has a user-manipulable interface by which the on/off valve selectively opens the primary suction pathway and occludes the primary suction pathway. A user-engageable pneumatic pathway serves, when selectively engaged, to pneumatically couple the primary suction pathway to a secondary external port in the hand-graspable housing such that suction is applied via the primary suction pathway to both the intake port and the secondary external port. By one approach the secondary external port comprises a thumb-control port.

Abstract: A stopcock for a channel that guides a flux medium in a medical endoscope, the stopcock having a housing accommodating a plug rotatable about an axis in a conical seat penetrated by the channel, wherein the housing has a bearing collar adjacent to the conical seat in the direction of the axis, in which bearing collar a handle body is mounted to be rotatable about the axis, the handle body supporting a handle outside the housing and rotationally coupled to the plug displaceable in direction of the axis and resiliently supported relative thereto, wherein the handle body has a radially elastic detent device engaging a circumferential inner groove of the bearing collar to be locking in direction of the axis, wherein the plug is arranged and configured bring the detent device out of engagement with the bearing collar upon displacement in direction of the axis into an unlocked position.

Abstract: A method of refurbishing a damaged valve is disclosed that generally includes receiving a valve housing having generally collinear inlet and outlet ports in the side walls thereof and an interior annular face about each of the inlet and outlet ports, the housing comprising a first metal with a yield strength and the side walls having a predetermined thickness, creating an annular groove about an interior annular face of the inlet port, creating an annular groove about an interior annular face of the outlet port, and placing a second metal within each of the annular grooves, the second metal having a yield strength, wherein the yield strength of the first metal is less than the yield strength of the second metal.

Abstract: An automated torch for generating and sustaining a flame is provided that includes a head, the head including a burning chamber, the burning chamber being open to the atmosphere and weather elements to expose the flame to the atmosphere and weather elements, a pole, a valve, a programmable computer module, the module configured to convert a low voltage to a high voltage, the module further configured to actuate a valve, the module still further configured to control the rotation of the valve to vary the amount of fuel introduced into the burning chamber to modify the aesthetics of the flame, a sleeve nut, the sleeve nut configured to be adjustable to control the amount of air introduced in the burning chamber to modify the aesthetics of the flame, at least one fuel supply tube, a diffuser assembly and an igniter. The igniter positioned within the burning chamber and the igniter including an anode and a cathode.

Abstract: A service valve assembly that is designed to minimize leakage by reducing the number of leakage paths from the valve assembly. In addition, the service valve assembly is designed to permit connection to many different refrigeration systems and has higher flow capacity. The valve assembly is engageable by current servicing tools so that purchase of new service tools is not required. In the valve assembly, the service connection is designed as part of the shut-off valve and communicates with the condenser side port. Therefore, initial processing through the condenser side port and subsequent processing through the evaporation side port occur through the combined service connection and shut-off valve structure. Once installed, the described valve assembly has one leak path versus two leak paths in known valve assemblies.

Abstract: A plug valve including a valve body having an inlet port, an outlet port and a central chamber extending between the inlet port and the outlet port. The valve also includes an inlet seal segment within the central chamber and includes a bore extending therethrough and aligned with the inlet port. An outlet seal segment is disposed within the central chamber having a bore extending therethrough and aligned with the outlet port. A plug member is disposed in the central chamber and is moveable between an open position, to facilitate fluid flow through the plug valve, and a closed position, to block fluid flow through the plug valve. First and second side segments are disposed between and interlocked to the inlet and outlet seal segments to encircle the plug member. The side segments are tensioned to preload the seal segments against the plug member to prevent the flow of fluid between the seal segments and the plug member.

Abstract: A flow diverter device includes a valve body component defining therein two inlet channels and an outlet channel; and a rotatable diverter component comprising an exterior side wall and defining therein a connecting channel in the form of an annular slot positioned around a portion of the exterior side wall. The rotatable diverter component is rotatably received by the valve body component and being movable between a first position where the connecting channel fluidly connects one of the inlet channels with the outlet channel only and a second position where the connecting channel fluidly connects the other of the inlet channels with the outlet channel only.

Abstract: The invention provides a hard seal plug valve, comprising a valve body, wherein a tapered plug is arranged in the valve body, a bonnet is arranged at an upper part of the valve body, a drive valve rod penetrates the bonnet, an elastic hold-down mechanism is sheathed on the drive valve rod and arranged on a plug bearing seat, the plug bearing seat is connected with the tapered plug, and the plug bearing seat is held down when the elastic hold-down mechanism extends; and the hard seal plug valve characterized in that a telescopic mechanism is sheathed on the drive valve rod, the plug bearing seat is pushed upward when the telescopic mechanism extends, a valve rod bearing seat is arranged at the bottom of the drive valve rod, ends of the valve rod bearing seat pass through a planetary reduction mechanism, and the tapered plug is connected with the planetary reduction mechanism and rotates with the drive valve rod by the planetary reduction mechanism.

Abstract: A valve capable of restraining a valve element having a flow-path hole from unintentional rotation to close the valve is provided midway of a flow pipe, including the valve element and a holding member holding the valve element while permitting rotational movement thereof and having inlet and outlet ports. The valve element makes rotational movement between a first position for bringing the ports into communication with each other through the flow-path hole and a second position for blocking the communication. The flow-path hole has inlet and outlet openings facing respective inlet and outlet ports, in the first position. The inlet opening has a shape capable of embracing an outer edge of a valve-element-side opening of the inlet port facing the valve element and a size greater than that of the outer edge of the valve-element-side opening circumstantially of the rotational movement of the valve element.

Abstract: A rotary valve that includes a rotor and a casing which rotatably accommodates the rotor. The casing includes an inflow side opening through which a fluid flows in from the outside to the rotor accommodating space and two outflow side openings through which the fluid flows out from the rotor accommodating space to the outside, at a position opposite to an outer circumferential surface of the rotor. The rotor is formed in a cylindrical shape having an internal space. An end surface of the rotor is provided with an end surface side opening which communicates with the internal space. The outer circumferential surface of the rotor is provided with a rotor outer circumferential opening and a rotor outer circumferential blocking surface which are configured to open and close the outflow side openings of the casing.

Abstract: A split valve includes: an upper valve body having a spherical surface abutting on a seat surface of a discharge port to block the discharge port and a hollow on a lower surface; a lower valve body that blocks a receiving port by causing a spherical surface to abut on a seat surface of a receiving port and has a protrusion fitted to the hollow of the upper valve body on its upper surface, a shaft that rotates the lower valve body, an air supply/discharge mechanism that supplies/discharges an air pressure into/from a chamber defined by the protrusion and the hollow.

Abstract: A spray gun includes a gun body, a rotary plug and a button. The gun body has a valve seat extending between an inlet passage and an outlet passage thereof. The plug is accommodated in a chamber of the valve seat and has a fluid path, with the plug rotatable between an open position where the fluid path joins the inlet passage and the outlet passage and a closed position where the plug separates the inlet passage from the outlet passage. The button has two lobes joined to opposite ends of the plug. An elastomeric seal ring is sleeved around the plug. A backup ring adjacent to the seal ring is sleeved around the plug. The seal ring and the backup ring are held between a shoulder of the valve seat and the respective lobe of the button.

Abstract: A unisex ball valve coupling includes an interface end that engages an interface end of a mating coupling half assembly. A valve of the coupling has a valve body, which has an open position in which fluid flow is permitted through the internal passage and a closed position in which the valve body closes off fluid flow through the internal passage. A valve shaft rotates with the valve body between the open position and the closed position. The valve shaft has a first surface. A blocking member is movable from a blocking position to a non-blocking position within the body portion. In the blocking position, the blocking member engages the first surface of the valve shaft to secure the valve body in the closed position and, in the non-blocking position, the blocking member does not engage the first surface of the valve shaft to permit opening of the valve.

Abstract: An actuated rotary valves for reciprocating compressors used in oil and gas industry, the valve including a stator with a stator opening, a rotor with a rotor opening, and an actuation mechanism. The actuation mechanism is configured to receive a rotation motion and to actuate the rotor to perform first an axial translation moving away from the stator and then a rotation. The actuation mechanism includes an outer shaft configured to receive the rotation motion, and an inner shaft inside the outer shaft and configured to rotate the rotor. The outer shaft is configured to rotate a predetermined angular displacement while pushing the rotor away from the stator before engaging the inner shaft to rotate together with the rotor.

Abstract: Reciprocating compressors used in oil and gas industry having actuated rotary valves with sealing profiles between a rotor and a stator thereof and related methods are provided. An actuated rotary valve includes a stator having a stator opening, and a rotor having a rotor opening. At least one of the rotor and the stator has a sealing profile extruding from a surface of the rotor or of the stator towards an interface there-between, the sealing profile surrounding a respective one of the rotor opening or the stator opening.

Abstract: A dual flow gas valve suitable for gas grills that allows a user to select the valve for use with gases of different heating values and to select one of a high flow position and a low flow position for each gas. The gas valve includes a body and an input passageway communicating with the body. In one embodiment, a rotational member in the body defines a first port communicating the input passageway with an interior chamber. The rotational member defines an additional passageway external to the rotational member. The rotational member may be rotated to a first position to activate high flow through the rotational member or may be rotated to a second position to activate the external, low flow, passageway.

Abstract: A dome valve selectively dispenses a silicon product from a chamber of a vessel. The dome valve comprises a valve body defining a pass-through channel in communication with the chamber of the vessel to allow the silicon product to exit the vessel. The dome valve also comprising a valve seat defining an opening through which the silicon product enters the pass-through channel. The dome valve further comprising a domed body having a semi-hemispherical configuration. The domed body has a sealing surface. The domed body is rotatable between a closed position and an open position for allowing the selective dispensing of the silicon product from the vessel.

Abstract: A valve with a dual rotational valve member is provided. The valve includes a first valve member and a second valve member. An actuation arrangement is operably positioned between the first valve member and the second valve member to rotate the first valve member in a first direction and the second valve member in a second direction opposite the first direction. This counter-rotation of the first and second valve members selectively aligns or misaligns a pair of flow ports of the first valve member with a pair of flow ports of the second valve member. When the pairs of flow ports are aligned, the flow path of the valve allows for straight through flow of a fluid through the valve thereby decreasing turbulence, back pressure, and noise.

Abstract: A valve includes a housing with a cavity having at least one connector fluidically connecting the cavity to an outside of the housing and a plug that is movable within the housing. The plug is movable at least between a first position that substantially occludes fluidic communication between the cavity and an outside of the housing through the at least one connector and a second position that allows fluidic communication between the cavity and the outside of the housing through the at least one connector. The valve also includes a septum in operable communication with the housing that is sealingly penetrable by a fluid transfer device, wherein the fluid transfer device is capable of moving the plug between at least the first position and the second position.

Abstract: A thermoplastic or elastomeric single use high purity full flow pinch valve can be used for high purity applications, such as biotech applications. The valve mimics the performance of a traditional valve with the added feature of being able to be gamma irradiated at a cost that allows it to be discarded after a single use. The valve can be considered as a single use valve can be practically considered as completely disposable.

Abstract: An actuator stem assembly configured to provide bi-directional movement of a stem in relation to a plug to isolate external forces exerted upon the stem from misaligning the plug. The actuator stem assembly includes a stem, an intermediate slider, and a plug. The stem is configured to slidingly engage the intermediate slider in a manner sufficient to allow translation in a first direction. The intermediate slider is configured to slidingly engage the plug to allow translation of the intermediate slider in a second direction. The first and the second directions are perpendicular to one another, thereby allowing for bi-directional movement of the stem.

Abstract: The invention relates to a valve with a valve housing, in particular for controlling the liquid flow in a plant for central heating. The valve comprises an insert part with valve parts for controlling a liquid flow through the valve: a first part and a second part being mutually rotatable. The first and the second parts are provided with complementary through-flow openings that combine to define a common opening area and are configured such that, upon mutual rotation of those valve parts, a larger or a smaller total opening area is provided. The valve comprises a closure part which is disposed such that, upon axial displacement, it is capable of completely or partially closing off the total opening area through the through-flow openings.

Abstract: The invention relates to a valve combination for regulating the rate of flow or the differential pressure in liquid-conveying heating and cooling systems, consisting of a housing (2) provided with a feed pipe (10), a discharge pipe (11) and a connection pipes (6) arranged between them and a regulator (3) which is arranged axially in the connection pipe (6), wherein the regulator (3) keeps the differential pressure constant at a preset value by means of a first flow regulator (4) also arranged axially in the connection pipe (6) and can be adjusted by an actuating part (8) which projects from the housing (2) and acts on a second seat (24), and by means of a presettable second flow regulator (5) which is arranged axially or coaxially thereto, wherein the flow cross section (9) is adjustable, which is characterized in that, when an actuator (29) that acts on the actuating part (8) is installed, the flow cross section (9) is adjustable by means of a handle (7) not covered by the actuator and that, when the actuato

Abstract: An O-ring has a shape including a first portion that is arranged side by side with a suction port in an axial direction, a second portion that is arranged side by side with a suction port, and a third portion that connects these portions. The first portion and the second portion are arranged to be displaced from each other in the axial direction. The third portion is arranged to extend in a direction different from a circumferential direction between the suction port and the suction port when a pump body is viewed in a radial direction. Thus, the suction ports can be located closer to each other in the axial direction. Therefore, the axial direction length of the pump body can be reduced, and size reduction of a rotary pump device can be achieved.

Abstract: An article of laboratory glassware for directing the flow of chemical materials is described. The article includes a glass manifold having a plurality of input ports and at least one output port, and a plurality of stopcocks. Each stopcock has an inlet port and an outlet port connected by a passageway through the plug. Each of the stopcock output ports is connected to one of the manifold input ports, and each of the stopcock input ports is connected with one end of a hollow glass tube, and the other end of the hollow glass tube is connected to a female ground glass joint. The output ports of the manifold are terminated to a male ground glass joint. Each plug is rotated by an electrical motor or a servo, and sensed by a sensor. The rotation of each rotating plug is controlled by a computer.

Abstract: Provided is a control valve trim, including a plug having a plurality of sections arranged in series along a longitudinal axis, wherein each of the plurality of sections has a diameter that is greater than the diameter of the preceding section, and a plurality of slots in the surface of each of the plurality of sections, and a liner, wherein the plug is disposed internal to the liner.

Abstract: The valve includes a female part having a closed, transverse, proximal end wall, and a tubular wall integral with a flange part, a lateral opening being formed on the proximal section of the tubular wall, a male part having a tubular wall forming, on the proximal side, a closing/opening part having an open, transverse, proximal end; the closing/opening part has an external shape and an external dimension that fit the internal shape and internal dimension of the proximal receiving part of the female part. The sealing elements include three ring seals separated from one another in an axial direction, supported by the upper surface of the tubular wall of the male part and engaging with the female part, a proximal seal to the fluid product, a distal seal to external contaminants, and an intermediate seal to the fluid product and to external contaminants between the proximal and distal seals.

Abstract: A plug valve includes a valve body (10) and a valve stem (30) supporting a plug (32). A seat is formed on and is integral with the valve body. The seat includes a seating surface (16) above and below the passageway connecting the fluid inlet and the fluid outlet. The seating surface provides a seal with the plug. A method of forming the seat on the valve body is disclosed.

Abstract: A plug valve and stem sealing assembly capable of preventing leakage under demanding environmental and operating conditions while also improving the reliability of the valve seal. The valve includes a body, a flow-element, a bonnet and a self-adjusting stem sealing assembly. The body has a first port and a second port with a passage configured to flow a media extending between the first port and the second port. The flow-element is positioned between the first and second port and has a stem configured to actuate the flow-element between a closed position and an open position. The bonnet may be secured to the valve body and configured to secure the flow-element and stem sealing assembly in position. The self-adjusting stem sealing assembly is positioned adjacent to the stem and is configured to prevent media leakage from the valve.

Abstract: A plug valve including a valve body having an inlet port, an outlet port and a central chamber extending between the inlet port and the outlet port. The valve also includes an inlet seal segment within the central chamber and includes a bore extending therethrough and aligned with the inlet port. An outlet seal segment is disposed within the central chamber having a bore extending therethrough and aligned with the outlet port. A plug member is disposed in the central chamber and is moveable between an open position, to facilitate fluid flow through the plug valve, and a closed position, to block fluid flow through the plug valve. First and second side segments are disposed between and interlocked to the inlet and outlet seal segments to encircle the plug member. The side segments are tensioned to preload the seal segments against the plug member to prevent the flow of fluid between the seal segments and the plug member.

Abstract: A valve assembly includes a body structure having a proximal inlet tube and a distal outlet tube separated by a valve cylinder portion, a flow control valve situated in the valve cylinder portion, the flow control valve including a valve plug and an actuator shaft, and an actuation control pivotally mounted to the body structure, wherein rotational movement of the actuation control exerts an axial force against the actuator shaft to move the valve plug through the valve cylinder portion and open fluid communication between the proximal inlet tube and the distal outlet tube. A bead seating system includes means for establishing fluid communication between a container of pressurized fluid and a valve assembly, means for transferring rotational movement of a actuation control pivotally mounted on the valve assembly into an axial force, means for establishing fluid communication between the container and a bead seating tool via the valve assembly.

Abstract: Rotational multi-vane positive displacement valves, preferably for use with a solar air-conditioning system. Each valve has an outer cylindrical valve body housing having an inlet port and an outlet port and an inner rotational cylinder disposed within the outer cylindrical valve body housing. The inner rotational cylinder can be supported by a longitudinal shaft offset from a center position of the outer housing. The inner rotational cylinder has a plurality of spring loaded vanes along a substantial portion of its longitudinal axis equally spaced around a circumference of the inner rotational cylinder. The outlet port is preferably located at least 100 degrees in direction of rotation from the inlet port, when the inner cylinder has four vanes. The shaft can extend beyond the outer valve housing and is adapted for attachment to external appliances.

Abstract: A dual-flow valve includes an inner valve body defining a first flow path and an outer valve body circumscribing the inner valve body. The outer valve body and the inner valve body define a second flow path. The dual-flow valve includes a valve element disposed across the first flow path and the second flow path. The valve element has a first passage for selective flow alignment with the first flow path and a second passage for selective flow alignment with the second flow path. A dual flow swivel includes an upper and lower swivel body, with the lower body adapted to rotate relative to the upper body. Two separate flow paths extend through the swivel bodies allowing upwardly and downwardly directed flows through the swivel bodies.

Abstract: A duel fuel gas control valve controls the supply of gas (e.g., natural gas or liquid propane gas) to a gas grill. The duel fuel gas control valve is structured to control either natural or LP gas flow at the desired operating characteristics based on conventional gas supply characteristics and gas grill requirements. A restrictor mechanism, when in first and second configurations, respectively, restricts movement of the valve core to a first predetermined range for a first mode of operation (first type of gas supply) and to a second predetermined range for a second mode of operation (second type of gas supply).

Abstract: A rotating gate valve can be used to shear cables or tubing as it closes to obstruct flow. In embodiments, a valve body can have a flow passage and a lateral bore that is transverse to the flow passage. The gate can have a generally cylindrical shape and can rotate about the axis of the gate as it moves laterally to close a flow passage. The lateral and rotational movement can shear articles such as, for example, cables and tubing that extend through the flow passage.