A mesh valve protection device includes at least one layer of mesh, wherein the mesh valve protection device is adapted to be positioned proximate an inlet of a valve assembly so that a fluid flow controlled by the valve assembly passes through the at least one layer of mesh of the mesh valve protection device before passing through the valve assembly.

A monolithic three-dimensional fluidic check device is presented. The monolithic three-dimensional fluidic check device comprises a housing surrounding a fluidic flow path and having a first opening at a first end of the housing and a second opening at a second end of the housing, and an elongated center body positioned within and extending along the fluidic flow path. The elongated center body is stationary relative to a flow of fluid.

A check valve supplies fluid to a system and includes a fluid barrier protects the sealing elements and surfaces of the check valve preventing degradation from any backflow of gas and debris from the system to which fluid is supplied.

A valve comprising a valve body including an inlet, an outlet and a mounting surface. A first valve actuator is connected to the valve body. A plurality of mounting holes are formed in the mounting surface. The plurality of mounting holes are asymmetric relative to the mounting surface.

A valve comprising a valve body including an inlet, an outlet and a mounting surface. A first valve actuator is connected to the valve body. A plurality of mounting holes are formed in the mounting surface. The plurality of mounting holes are asymmetric relative to the mounting surface.

A polymeric housing may have a channel defined therein. A first conductive trace may at least partially coincide with the channel. A first wire may have a first conductor surrounded by a first insulating jacket. The first conductor may be in electrical communication with the first conductive trace. A jacket bonding region of the first jacket may be welded to a housing bonding region of the housing. The jacket bonding region and the housing bonding region may be formed from a common type of polymer.

An internal combustion engine with an exhaust tract and with a secondary air system which has a secondary air conduit through which secondary air can flow in an injection direction. The secondary air can be introduced into the exhaust tract. A valve element is arranged in the secondary air conduit and has a first flow resistance along the injection direction and a greater second flow resistance along an opposite backflow direction, as a result of which a backflow taking place in the backflow direction can be limited. The valve element has a plurality of rotationally symmetrical impact bodies which are arranged consecutively along the injection direction and are connected to one another. The valve element is arranged in a length region of the secondary air conduit which is limited by a structural element of the internal combustion engine which is formed separately from the valve element.

Disclosed are a linkage control device and a blood gas analyzer adopting the linkage control device. The linkage control device comprises a power unit and a rotating component (4) provided with bosses (41, 42). The power unit generates power to drive the rotating component (4) to rotate. The linkage control device further comprises valve components (5, 6, 7, 8), a signal control unit, sensing switches, and sensing pins (43, 44, 45, 46). The valve components (5, 6, 7, 8) are matched with the bosses (41, 42) of the rotating component (4) in a pushing manner. The signal control unit controls the start or stop of the power unit. The sensing switches are connected to the signal control unit via signals. The sensing pins (43, 44, 45, 46) are arranged in pair with the sensing switches and are arranged on the rotating component (4).

Variable orifice valves comprising a first fixed plate, a second fixed plate and a movable plate between are described. The movable plate is connected to the first fixed plate and the second fixed plate by sealing elements. The movable plate is moved closer to or further from the first fixed plate by rotation of an actuator ring that rotates at least two rotary elements connected to the movable plate. A needle on the movable plate engages an opening in the valve to seal or open the valve to allow fluid flow. Methods of controlling flow of fluid through the variable orifice valve are also described.

Variable orifice valves comprising a first fixed plate, a second fixed plate and a movable plate between are described. The movable plate is connected to the first fixed plate and the second fixed plate by sealing elements. The movable plate is moved closer to or further from the first fixed plate by rotation of an actuator ring that rotates at least two rotary elements connected to the movable plate. A needle on the movable plate engages an opening in the valve to seal or open the valve to allow fluid flow. Methods of controlling flow of fluid through the variable orifice valve are also described.