A device for selectively storing and mixing two liquids. The device comprises a first interior portion for storing a first liquid, a second interior portion for storing a second liquid, and a valve intermediate to the first and second interior portions. The valve moves between at least two positions, a first position preventing the first and second liquids from mixing, and a second position allowing the first and second liquids to mix. The valve includes a first member protruding from a first side and a second member protruding from a second side.

A rotary control valve that includes a valve body, a valve shaft disposed within a bore of the valve body, a first valve seat disposed within the valve body, a first control element carried by the valve shaft, and a first pressure labyrinth at least partially defined by the first control element. The first control element is movably disposed in the first opening between a closed position, in which the first control element sealingly engages the first valve seat, thereby closing the first opening, and an open position, in which the first control element is spaced from the first valve seat, thereby opening the first opening. When the first control element is in the closed position, the first pressure labyrinth is configured to cause a pressure drop in fluid flowing therethrough, thereby minimizing an internal leak rate of the rotary control valve.

A frictionless rotary valve comprising: a valve body to be connected within a gas meter, the valve body comprising: a seal, fixedly attached near an outlet of the valve body; and a valve disc, having a ball bearing attached to the valve body; and a gear mechanism comprising: a worm wheel engaged with a worm, wherein the worm wheel is attached to a second end of the valve disc; a drive gear connected to the worm, wherein a rotation of the drive gear in a clockwise direction rotates the worm wheel in an anti-clockwise and moves the valve disc in a closed position; a worm wheel stop, for restricting a movement of the worm wheel in the anti-clockwise direction and driving the worm wheel in a vertically upward direction; and a linear guide attached to the worm wheel.

A valve member is mounted on a shaft to pivot within a fluid passage. A control selectively moves a piston in a linear direction to control a position of the valve member in the fluid passage. The piston causes a roller pin to move as the piston moves linearly. The roller pin is mounted in crank collars of a crank shaft such that movement of the roller pin causes the crank collars to rotate crank shaft rotating position, and the valve shaft. The roller pin is mounted within the crank collars by bearings. The bearings each have an outer race associated with a crank collar, an inner race associated with the roller pin, and bearing members separate the inner and outer race. There is a spring bias resisting movement of the inner races relative to said roller pin. An anti-ice system is also disclosed.

A motor-driven throttle valve for an exhaust duct and having: a tubular duct, which is designed so that exhaust gases can flow through it; a throttle shutter, which is arranged inside the tubular duct and is mounted so as to rotate around a rotation axis; a first shaft, which is mounted so as to rotate around the rotation axis and supports the throttle shutter; an electric actuator, which is provided with a second shaft and is designed to rotate the shaft around the rotation axis; a support bearing, which supports the shaft in a through manner and is arranged on the outside of the tubular duct; and a spring, which applies to the shaft an elastic force, which axially pushes the shaft and, at the same time, is configured to transmit a rotary motion around the rotation axis from the second shaft of the electric actuator to the first shaft supporting the throttle shutter.

A damper device and a total heat exchanger including the same are provided in the present application, including: a damper plate, including an air port cover plate, and a rotating shaft disposed at the air port cover plate and extending along a diameter direction of the air port cover plate; and a damper plate fixing base configured to fix the damper plate inside the damper plate fixing base and including a fixing groove formed opposite to the rotating shaft and configured to fix the rotating shaft, the fixing groove including a recess disposed opposite to the rotating shaft and formed by further being recessed from at least a part of the outer circumference of the fixing groove. According to the above technical solutions of the present application, the damper device can ensure performance without reducing the air volume under low temperature conditions, and can also suppress icing of the damper device.

An exhaust-gas flap device, including for the exhaust-gas flow of an internal combustion engine, has a flap pipe and a flap plate that is supported in the interior of the flap pipe on a pivot shaft. The pivot shaft is rotatable about a pivot axis (A). The pivot shaft has first and second axial end regions and is supported rotatably on the flap pipe by respective first and second bearing assemblies. The pivot shaft is configured, in the first axial end region, for coupling to a drive element of a pivot drive. The pivot shaft is, in at least one of the axial end regions, in contact with vibration-damping material that is supported relative to the flap pipe.

A butterfly valve includes a valve body having at least a surface formed of resin material and being formed therein with an internal flow passage, a valve stem rotatably supported by the valve body, a valve element connected to the valve stem to be rotatably supported by the valve body and placed in the internal flow passage, and bushings externally fitted around the valve stem. The valve body is provided with bearing holes each rotatably supporting the valve stem via the corresponding bushing and the bearing holes each have an opening being open to the internal flow passage. Each bearing hole and the corresponding bushing have shapes such that a gap is formed between inner peripheral surfaces of the bearing hole and an outer peripheral surface of the corresponding bushing in a region adjacent to the opening.

A butterfly valve includes a valve body, a valve stem rotatably supported by the valve body, a valve element rotatably supported by the valve body, and a bushing externally fitted around the valve stem. The valve element is configured by a core member and a contour member formed of a resin material and surrounding the core member to define a contour of the valve element, the valve element is formed with valve-stem holes that support the valve stem via the bushing, the contour member has a stem hole component forming inner peripheral surfaces of the valve-stem holes, and the bushing and the valve stem have shapes such that a gap is formed between an inner peripheral surface of a portion of the bushing located inside the stem hole component and an outer peripheral surface of a portion of the valve stem located inside the stem hole component.

A butterfly valve includes a valve body, a stem, a disc, and a stopper. The valve body has a first through hole, a second through hole and a flange. An axial central line of the second through hole and an axial central line of the first through hole are perpendicular to each other. The flange radially extends from a surface surrounding the first through hole and extends into an inner side of the first through hole. The stem is accommodated inside the second through hole and extends into the first through hole. The disc is formed on a surface thereof with a first engaging portion while the stopper is formed with a second engaging portion. The first engaging portion and the second engaging portion are respectively embedded with a first part and a second part of the stem. The stopper is rotated by the stem and abuts against the flange when the disc closes an open end of the first through hole and continues to rotate.