An actuator assembly includes, a main body, a perimeter compressor, an actuator shaft, an actuator, and a sealing member. The perimeter compressor is slidable between a retracted position and an extended position. The actuator shaft extends through the main body and the perimeter compressor and is operably coupled with a proximal end of the actuator shaft to facilitate movement of the actuator shaft between the extended position and the retracted position. The sealing member includes an inner and outer portion. The inner portion is releasably coupled with the distal end of the actuator shaft and is configured to interface with the valve body. Sliding the perimeter compressor into the extended position facilitates sandwiching of the sealing member between the perimeter compressor and the valve body. Sliding the perimeter compressor into the retracted position facilitates releasement of the sealing member therefrom.

The present disclosure provides a valve (123), comprising a channel body (1231) defining a bent channel space, an elastically flexible membrane (1233), which separates a control space (Sc) from a flow space (Sf) in the channel space, a control connection (1232), providing a fluid connection to the control space (Sc), The control space (Sc) is provided at a radially outermost portion (Co) of the channel space, as per a channel bending radius (Ro), such that the membrane (1233) is flexible between an open position, whereby a cross section of the flow space (Sf) is substantially that of the channel, and a closed position, whereby the membrane substantially seals against a radially innermost portion (Ci) of the channel, as per the channel bending radius (Ri). Use of the valve in a separator is disclosed, as well as a separator comprising such valve and a method of cleaning a separator body.

Fluid distribution valve (11), particularly for a vehicle screen wash system, characterized in that it comprises a body (41) defining a duct (43) for the passage of fluid and comprising at least one fluid inlet (45) and at least one fluid outlet (47, 49), a membrane (53) housed in the duct and configured to be deformed under the action of a magnetic field between a first position of at least partial closure of the duct and a second position of at least partial opening of the duct, and means (51) for generating a magnetic field within the duct in order to cause the membrane to deform.

A single-use centerbody assembly for a valve includes: a centerbody, including: a process surface and a back surface; at least one inlet orifice disposed in the centerbody, and at least one outlet orifice disposed in the centerbody separate from the at least one inlet orifice; a peripheral surface extending between the process surface and the back surface; an inlet fitting extending from the peripheral surface; and an outlet fitting extending from the peripheral surface; a control diaphragm facing the process surface, a perimeter of the control diaphragm being bonded to the centerbody so as to define a seal that blocks the passage of fluid; and a backside diaphragm positioned facing the back surface, a perimeter of the backside diaphragm being bonded to the centerbody so as to define a seal that blocks the passage of fluid.

A flow control apparatus and a program are disclosed herein. A flow control apparatus includes a piezoelectric element coupled to a valve element configuring a flow regulating valve and that works the valve element to regulate a flow, a driving circuit that applies a voltage to the piezoelectric element to drive the piezoelectric element, an accepting means for accepting a target flow, and an output means for outputting a signal corresponding to the voltage applied to the piezoelectric element to the driving circuit, to change the flow so as to coincide with the target flow. When the target flow is changed, the output means transiently outputs a signal corresponding to a voltage value different from a target voltage value corresponding to the target flow after the change, and then the output means outputs a signal corresponding to a voltage change converging at the target voltage value.

A diaphragm valve includes a valve body, a diaphragm, a bonnet, an operation mechanism, and a fixing mechanism. The fixing mechanism includes a clamping member for integrally sandwiching and fixing, from both right and left sides, circumferential edges of both the bonnet and the valve body. A circular pressing member for pressing a circumferential edge of the diaphragm from above is interposed between the diaphragm and the bonnet and has convex portions and concave portions. The convex portions fit into notches provided at the circumferential edge of the diaphragm or the valve body, and the concave portions are fitted by protrusions provided at the circumferential edge of the diaphragm or the valve body.

The invention concerns a circuit comprising a bag (11) comprising two flexible films (45, 46) and a press (10) comprising a first (14) and a second (13) shell clamping the bag to form pipes having a passage and edges (41); the first shell comprising a valve (20) which comprises a movable member (24) and a pad (31), which pad has a resting configuration in which a second face (33) of the pad is concave and locally delimits a channel (18) and a pinching configuration in which the second face (33) is convex; said movable member and said pad being configured so that, when said valve is in closed position and said pad in pinching configuration, said passage is pinched by said movable member against said second shell channel and said edges (41) are pinched flat by said movable member against said second shell (13).

The present disclosure provides a valve (123), comprising a channel body (1231) defining a bent channel space, an elastically flexible membrane (1233), which separates a control space (Sc) from a flow space (Sf) in the channel space, a control connection (1232), providing a fluid connection to the control space (Sc), The control space (Sc) is provided at a radially outermost portion (Co) of the channel space, as per a channel bending radius (Ro), such that the membrane (1233) is flexible between an open position, whereby a cross section of the flow space (Sf) is substantially that of the channel, and a closed position, whereby the membrane substantially seals against a radially innermost portion (Ci) of the channel, as per the channel bending radius (Ri). Use of the valve in a separator is disclosed, as well as a separator comprising such valve and a method of cleaning a separator body.

A valve having a streamlined fluid flow space is disclosed. The valve includes a main body and an opening-closing member, a fluid flow space through which fluid flows is formed inside the main body, the opening-closing member opens or closes flow of the fluid. Here, the fluid flow space has a streamlined shape from an inlet in a direction from the inlet to the opening-closing member or from an outlet in a direction from the outlet to the opening-closing member.

Example embodiments relate to microfluidic devices for controlling pneumatic microvalves. One embodiment includes a microfluidic device for independently controlling a plurality of pneumatic microvalves. The microfluidic device is couplable to a pressure source. The microfluidic device includes a first substrate. The microfluidic device also includes a flexible membrane covering the first substrate. Additionally, the microfluidic device includes a second substrate covering the flexible membrane. Further, the microfluidic device includes one or more fluidic channels at least partially defined in the first substrate. In addition, the microfluidic device includes a pressure couplable to the pressure source and branching into a plurality of pressure channels. Still further, the microfluidic device includes at least one pressure control switch per pressure channel.