The invention relates to a valve actuator having an actuator housing and an actuator element, in particular a pneumatic piston or a control diaphragm, that is movably mounted within the actuator housing. In an assembly state of the valve actuator, at least one first contour of the actuator element engages in at least one second contour which is fixed relative to the actuator housing in such a way that a rotation of the actuator element about an actuating axis is blocked in at least one direction of rotation.

Systems, methods, and apparatuses for irrigating a tissue site are described. The system can include a tissue interface and a sealing member configured to be placed over the tissue site to form a sealed space, and a negative-pressure source fluidly coupled to the sealed space. The system includes an irrigation valve having a housing, a piston disposed in the housing, a fluid inlet to fluidly couple a fluid inlet chamber to a fluid source, and a fluid outlet to fluidly couple a fluid outlet chamber to the sealed space. A piston passage extends through the piston and fluidly couples the fluid inlet chamber and the fluid outlet chamber, and a biasing member is coupled to the piston to bias the irrigation valve to a closed position. The negative-pressure source is configured to move the piston between the closed position and an open position to draw fluid to the sealed space.

A fluid control device, capable of acquiring data related to an internal operation of a device, is provided. The Fluid control device V includes a bonnet part installing sensors for detecting the internal operation of the fluid control device and a valve body containing the bonnet part inside, and the valve body has a recess for containing the bonnet part and a slit, leading a communication cable connected to the sensors to the outside, opening one end on an opposite side of a base where a flow path is formed, and penetrating from an outside to the recess.

Provided is an actuator including a ball-type thrust amplifier therein that controls a valve in which a high-pressure fluid flows, and having less wear between members and a long lifespan. This actuator for a valve includes a thrust amplification mechanism therein, in which the thrust amplification mechanism includes a disk, a ball presser, a stem, and a plurality of balls that are sandwiched by and in contact with an upper surface of the disk, a tapered surface of the ball presser, and a tapered surface of the stem and disposed to move outward as the stem moves downward, the surfaces of the parts constituting the thrust amplification mechanism are coated with grease containing an additive, and the additive of the grease includes at least chloroalkane.

An operation information collection system for a fluid control device configured as an operation information collection module includes a detected value acquisition unit acquiring a detected value of a state change or a device operation able to detect opening/closing operations from the fluid control device, a calculation processing unit calculating a rate of change of detected values separated by a predetermined time based on the detected value, and an operation information registration unit registering the rate of change of the detected values separated by the predetermined time to an operation information storage unit as an operation information of the fluid control device.

An actuated valve assembly includes a valve body (110) having a valve seat (112) disposed between inlet (111) and outlet (113) passages, and a fixed orifice (115) restriction provided in at least one of the inlet and outlet passages, a valve element (120) assembled with the valve body and axially movable between a closed position and an open position, and an actuator (130) assembled with the valve body and connected with the valve element for axial movement of the valve element between the closed and open positions. A ratio of the maximum seat annulus flow coefficient associated with the valve seat and valve element to an orifice flow coefficient associated with the fixed orifice restriction is between about 2:1 and about 8:1.

A manifold body includes at least first and second valve body segments each comprising an upper perimeter wall portion defining a valve cavity and a lower base portion defining one or more flow ports, a unified leak test port, a first branch leak test passage extending from the unified leak test port to an outer peripheral portion of the valve cavity of the first valve body segment, radially outward of an outer seal surface in the valve cavity, and a second branch leak test passage extending from the unified leak test port to an outer peripheral portion of the valve cavity of the second valve body segment, radially outward of an outer seal surface in the valve cavity.

A pneumatic-hydraulic control valve includes a valve base and a valve stem movably disposed in the valve base. A first inner oil guiding hole of the valve stem communicates with a first outer oil guiding hole of the valve base. A second inner oil guiding hole of the valve stem does not communicate with a second outer oil guiding hole of the valve base when the valve stem is closed, and communicates with the second outer oil guiding hole of the valve base when the valve stem is opened. Further, the valve stem has a first stressed portion for bearing a fluid closing force and a second stressed portion for bearing a fluid opening force. The outer diameter of the first stressed portion is larger than that of the second stressed portion. Thus, the present invention reduces a valve opening force without affecting the sealing effect.

An insert safety valve includes a valve body having a valve member, and a control fluid conduit fluidically connected to the valve body. The insert safety valve being responsive to a control fluid at a first pressure to shift the valve member and open the valve body to a fluid flow and at a second pressure to add the control fluid to the fluid flow.

A device of a blow-moulding apparatus for moulding hollow bodies, in particular a stretch blow-moulding machine, is disclosed. The device includes a housing block with a through-bore, at least one valve with a movable piston and with a valve chamber, a first channel which runs in the housing block and which connects the valve chamber to the through-bore, a second channel which connects the valve chamber to an external line, and a cover for fastening the valve to the housing block. The valve connects the first channel and the second channel to one another and separates them from one another. The second channel runs at least partially in the cover and/or at least one part of the valve chamber is arranged in the cover and surrounds the piston. The device is small and compact and the valves may be replaced in a simple manner.