Abstract: A knife gate valve including a knife valve gate, a gate actuation mechanism, operatively connected to the knife valve gate, a two-part sleeve and a valve body. The two-part sleeve includes an upstream section and a downstream section with the knife valve gate being selectively insertable therebetween. The valve body includes an upper casing section and a lower casing section pivotally connected to one another. The upper casing section and the lower casing section each include a concave cavity together defining a sleeve receiving channel of the valve body. The two-part sleeve is removably engageable in the sleeve receiving channel. The upper casing section and the lower casing section are pivotable between an operative configuration preventing removal of the two-part sleeve from the sleeve receiving channel and a maintenance configuration allowing insertion and removal of the two-part sleeve from the sleeve receiving channel.

Abstract: An axial flow regulator includes a lateral access port through a portion of the valve body that provides access to a valve seat assembly and/or other portions of the valve trim without having to remove or uncouple the outlet flange or the inlet flange from the adjacent pipe sections. The lateral access port may extend through an outlet flange portion of the valve body and is configured to allow a valve seat assembly to be laterally inserted into and removed from the outlet flange. A valve seat assembly which may be configured for installation in the axial flow regulator includes a pad holder and a support ring for the pad holder that is separable from the pad holder. The pad holder may have alignment struts projecting radially outwardly from a pad support body. The support ring may include strut receivers that slidably receive the alignment struts of the pad holder.

Abstract: A flap device for an internal combustion engine or an electric vehicle includes a flap body comprising a receiving opening, a duct housing configured to rotate arranged in the flap body, an actuator, a first bearing, a stub shaft arranged to project from the actuator through the duct housing to the flap body, a slide bearing arranged in the receiving opening of the flap body, and an axial pin arranged so as to be fixed in the duct housing on a side of the flap body opposite to the stub shaft. The stub shaft is supported in the duct housing via the first bearing. The axial pin supports the flap body via the slide bearing and projects into the receiving opening.

Abstract: A flow control valve in which corrosion is less likely to occur in the vicinity of a radial step portion in a gas passage of a housing and a method for manufacturing the same are provided. A flow control valve includes: a housing formed with a gas passage including a first cylinder member accommodating portion, a second cylinder member accommodating portion, and a radial step portion; a first cylinder member accommodated in the first cylinder member accommodating portion; a second cylinder member accommodated in the second cylinder member accommodating portion; and a valve body that is rotatably arranged inside the first cylinder member and the second cylinder member in the radial direction. The housing is formed of cast iron. At least surfaces of the first cylinder member and the second cylinder member are formed of a highly corrosion resistant material.

Abstract: A valve has a valve body provided on its inner peripheral surface with a seat ring, a stem arranged to extend in a direction substantially perpendicular to the axis of a flow passage defined in the valve body, and a valve element rotatably supported through a bush attached to the stem, and opens or closes the flow passage by pressing or separating the valve element against or from the seat ring in the valve body in accordance with the rotation of the valve element. The valve body is molded after the valve element, the seat ring, the stem, and the bush are placed in predetermined positions in a mold.

Abstract: A simplified variable orifice for a conduit furnishing a stream of particulate coal to a burner for a turbine in an electrical utility plant. Two plates are installed across the conduit, one of them being fixed and the other being variable in angular position relative to the first. A lockable mechanism is provided externally of the conduit to manually adjust the degree of blocking and to indicate the position of the movable plate.

Abstract: Collets for coupling rotary actuators to valves are disclosed. An example collet includes a plurality of flexible members configured to be coupled to an elongated member and each having an inner surface that forms at least a portion of a substantially rectangular bore configured to receive a rectangular shaft. The plurality of flexible members form an involute outer surface for engaging an involute inner surface of an opening of a lever. The opening of the lever is configured to cause the plurality of flexible members to be displaced toward an axis of the elongated member to cause the inner surface of each of the plurality of flexible members to engage one or more surfaces of the rectangular shaft.

Abstract: The present invention is related to a method for the production of a throttle valve connection piece housing and a throttle valve as molded injection parts. The throttle valve connection piece housing is provided with a throughflow opening which can be sealed by the throttle valve. Along a pivoting axis extending perpendicular to the longitudinal axis of the throughflow opening, the throttle valve is provided with a continuous shaft hole into which a throttle valve shaft can be inserted in a rotationally fixed manner, the two ends of the shaft protruding from the shaft hole in such a way that they protrude into coaxial bearing holes in the throttle valve connector piece housing which are coaxial to the shaft hole. When the throttle valve is in a closed position, the radial peripheral edge thereof rests on the inner wall of the throughflow opening. The throttle valve connector piece housing is produced together with the closed-position throttle valve as a single injection molded piece in an injection mold.

Abstract: A vane-type throttle valve assembly including a body having a passage therethrough and a pivotable shaft transverse of the passage and supporting a vane for variably restricting the flow of material through the passage. The shaft is disposed in opposing bores in the valve body. Each bore includes an access slot. The valve is assembled by inserting an integrated shaft and vane into the passage, engaging the ends of the shaft into the access slots, and translating the shaft ends in the access slots until the ends of the shaft are positioned in the bores. The shaft is retained in the bores by bushings inserted from outside the valve body. In a currently preferred embodiment, the access slots are formed over an angle from an axis of the bores, and the shaft ends are entered into the bores by rotating the shaft and vane about the passage axis.

Abstract: A valve assembly includes a valve body with an access opening in which a linearly installed but pivotally operated gate-like valve-stopping mechanism is disposed, said mechanism including a support structure or cartridge with a pivotally moveable valve-stopping element or isolator (e.g., a butterfly element). A method for hot tapping a pipeline with a valve assembly as described above proceeds by (i) connecting the valve body to a line to be tapped, (iii) connecting a hot-tapping machine to the valve body, (iv) connecting a bonnet holding the valve-stopping mechanism to the valve body over the access opening, (v) hot tapping the line, (vi) advancing the valve-stopping mechanism into the valve body interior, and (vii) disconnecting the hot-tapping machine from the valve body with the valve-stopping element pivoted to the first position where it stops fluid communications. The gate-like valve-stopping mechanism can replace a gate in an insert valve (IV) or a repair-under-pressure (RUP) valve.

Abstract: The invention relates to a method for producing a throttle valve unit for installation into a flow conduit through which a gas flow passes. A flap shaft of the throttle valve unit is affixed to a stamped insert part inside a fastening region. The stamped insert part, which includes an insert border, is molded into a housing. At the same time as the stamped insert part is molded into the housing, the flap shaft affixed to the stamped insert part is molded-in inside the fastening region. A planar region of the stamped insert part connected to the flap shaft is cut out from this stamped insert part.

Abstract: A control valve assembly comprising at least two control valves which may be used, for example, to throttle the air intake of an internal combustion engine. The assembly is provided with a centrally arranged, force-transmitting shaft (32). The control valves are formed by blades (15) in frames (16) produced by an assembly injection molding process. The control valve blades (15) can be molded onto the force-transmitting shaft (32). The resulting assembly can be mounted or installed as a unit. Alternatively, instead of using a single continuous shaft, shaft projections can be injection molded on the valve blades, which terminate in lugs which engage in a rotationally secure manner in sockets in an adjacent valve assembly so that the two assemblies rotate together as a unit. The resulting control valve assembly is easy to install and advantageously takes up only a little space.

Abstract: Couplers for joining actuators to valves are configured to allow their affixment to different makes and models of actuators and valves, thereby allowing an off-the-shelf S coupling solution and avoiding the need to specially construct a coupler which is only adapted to connect whatever valve and actuator that are desired for coupling. The couplers include a shaft/stem bore which accommodates the torque-transmitting components of the valve and actuator to be coupled, and sets of affixment holes surround the shaft/stem bore, with these affixment holes being arrayed in patterns matching those of different common valves and actuators. Thus, a coupler may affix to different valves or actuators provided the appropriate affixment holes are chosen. The couplers may be formed as single-piece or multi-piece units.

Abstract: In a throttle body, a cylindrical body member is made of resin, and a core is made of a material different from the body member and insert molded in the body member. A notch is provided on an outer surface of the body in a peripheral direction, in a proximity of the core. The body member is readily split at the notch when external force is applied to the body member during a dismantling. Therefore, the core is readily removed from the body member. Alternatively, the body member can be constructed of a first body having a hook and a second body having a hook-receiving portion. Both the first and second bodies are connected to each other through the hook and the hook-receiving portion, and the core is held between both the first and second bodies. Thus, the core is readily removed from the body by unhooking the hook.

Abstract: An improved air outflow valve having a cable assembly that enhances its reliability. In a particular embodiment, the cable assembly couples the diaphragm to the control arm of the air outflow valve and includes a retainer and a cable. The retainer has a cavity to slidingly accept the end of the cable when the valve is operated in a manual mode. Thus, bending or kinking of the cable is substantially inhibited or prevented, resulting in improved valve reliability. The improved cable assembly also is available as a retrofit kit and a method of retrofitting an existing valve is also provided.

Abstract: A damper attaching structure which enables a damper provided with a thin rotational shaft to be assembled inside a casing or the like by employing an opening formed in the casing, is obtained by providing a concave groove which is formed in the inner surface of wall member and which is continuous from a casing opening; a positioning plate provided at the base of a damper thin shaft on the damper side thereof; a shaft hole which opens at the concave groove and which is larger than the cross section of the damper thin shaft; and a shaft fixing member which is provided on a lever, and which has an engaging hole into which the damper thin shaft is inserted and which engages the damper thin shaft member to enable torque transmission, and rotatably inserted into the shaft hole.

Abstract: Disclosed herein is a throttle return spring assembly for use in an electronic throttle unit having a throat and a valve rotatably fixed within the throat to close and open the throat. The throttle return spring assembly includes a shaft extending along a rotation axis and connected to the valve for opening and closing the throat of the throttle. A return spring has a first leg connected to the shaft and a second leg extending axially into an opening of a guide. The guide allows rotation of the return spring about the rotation axis and restricts lateral translation of the return spring. The guide has an arcuate inner radial wall defining a catch projecting radially inward. The return spring is wound by rotating the second leg to follow the arcuate surface and engage the catch. A special winding tool having a radial slot which engages the second leg can be piloted about the end of the shaft to wind the return spring.