Described are isolation valves, and chamber systems incorporating and methods of using the isolation valves. In some embodiments, an isolation valve may include a valve body and a flapper assembly. The valve body may define a first fluid volume, a second fluid volume, and a seating surface. The flapper assembly may include a flapper disposed inside the valve body having a flapper surface complimentary to the seating surface. The flapper may be pivotable within the valve body to a first position such that the flapper surface may be away from the seating surface to allow fluid flow between the first fluid volume and the second fluid volume. The flapper may be pivotable within the valve body to a second position such that the flapper surface may be proximate the seating surface to form a non-contact seal to restrict fluid flow between the first fluid volume and the second fluid volume.

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.

A valve device has a valve element, a housing and a rotary shaft. The housing has an opening and a seal member having a cylindrical shape and arranged along the opening. The valve element is rotated by the rotary shaft in an opening direction for opening the opening and in a closing direction for closing the opening. The seal member has a first side in the closing direction and a second side in the opening direction. The seal member has a first projection protruded from an inner surface of the seal member on the first side in the closing direction and a second projection protruded from an outer surface of the seal member on the second side in the opening direction. A first end and a second end of the second projection in a circumferential direction are not connected with other parts of the seal member.

A valve body includes an arm inserted portion that accommodates a part of a valve arm. A relation of hx<h1 is satisfied, provided that: a surface of the valve body that is in contact with a valve seat when an opening/closing valve closes a passing hole is a sealing surface; the valve arm and the opening/closing valve are in contact with each other on a contact surface when the opening/closing valve closes the passing hole; a surface of the contact surface that is the closest to the sealing surface is a valve-closed contact surface; hx is a size of thickness from the sealing surface to the valve-closed contact surface; and h1 is a size of thickness of the valve body.

A heat recovery device extends between an inlet and an outlet for exhaust gas, and includes a valve delimiting a direct passage for gas between the inlet and the outlet. The valve comprises a valve body housing a gate movable between a closing off position and a released position. A heat exchanger has an exchanger inlet upstream of the gate and an exchanger outlet downstream of the gate. The valve comprises a tube partially extending inside the valve body up to a mouth edge at a distal end, with the mouth edge extending in a plane. The gate has a plane contact surface configured to come in a direct contact with the mouth edge when the gate is in the closing off position.

A unitary inlet port assembly for use as a closable air inlet port for an inflatable heating blanket or garment. The inlet port assembly has a port panel on the outside of blanket, having an inlet opening configured for receiving an air hose nozzle. A closure panel that is disposed within an interior portion of the inflatable heating blanket or garment, and is hinged an edge of the port panel. A latch extends from an outer-facing surface of the closure panel, to register with the inlet opening of the port panel when pivoted to a closed position. At the closed position, the outer-facing surface of the closure panel confronts and engages the inside surface of the port panel to close the air inlet port. The latch is configured to engage the annular rim of the port panel to hold the closure panel in the closed position.

Described are isolation valves, and chamber systems incorporating and methods of using the isolation valves. In some embodiments, an isolation valve may include a valve body and a flapper assembly. The valve body may define a first fluid volume, a second fluid volume, and a seating surface. The flapper assembly may include a flapper disposed inside the valve body having a flapper surface complimentary to the seating surface. The flapper may be pivotable within the valve body to a first position such that the flapper surface may be away from the seating surface to allow fluid flow between the first fluid volume and the second fluid volume. The flapper may be pivotable within the valve body to a second position such that the flapper surface may be proximate the seating surface to form a non-contact seal to restrict fluid flow between the first fluid volume and the second fluid volume.

A supporting member supporting a valve body includes a supporting member body having a semispherical bottom portion that makes contact with the top face of the valve body and a securing recess that is provided in the center and at a predetermined axial location to adjoin a through hole provided in the valve body, and a securing member including an engaging portion that has a form of a shaft having a predetermined diameter made of an elastic material and protrudes from a proximal end and a securing projection that swells out from a predetermined axial location of the shaft portion to fit into a securing recess provided in a through hole in the supporting member body.

A turbocharger (10) has an improved wastegate valve assembly (32) wherein a valve member (35) moves freely within a lever arm (34A), and therefore, is displaceable sidewardly across the opening (28) of the wastegate port (28). The valve member (35) and associated seat (36) respectively have male and female forms so as to sealingly engage with each other when the valve body (35) is in the closed position. As such, the valve member (35) can move freely as it engages the seat (36) to provide a tight uniform seal therebetween. Additionally, the seat (36) may be formed as an insert which fits within the wastegate port (28) and is also free floating in the direction extending across the port (28) which further assists in self-centering of the valve member (35) and seat (36).

The present disclosure discloses a magnetic floor drain, comprising a floor drain body and a sealing cover. A straight-through water outlet is provided at a lower part of the floor drain body. A locating surface is provided at one side of the water outlet. At least one fixed magnetic block is provided on the locating surface and all the fixed magnetic blocks are provided in an interval arrangement. One side of the sealing cover is connected flexibly to the locating surface through a hinge structure. At the same time, a movable magnetic block is provided at the hinged side of the sealing cover. Centers of the fixed magnetic block and the movable magnetic block are both located on the axis of the hinge structure. The present disclosure provides an adjustable draining which is simple and useful, convenient to assemble and few accessories needed.