A rocker valve for opening or closing a fluid connection includes a valve chamber into which at least one opening feeds, a pivotally mounted rocker switch, and a membrane surface located between the rocker switch and the opening. By pivoting the rocker switch, the opening can be fluidically opened or closed relative to the valve chamber. The rocker valve further includes a sealing element that is located between the membrane surface and the opening when the rocker switch closes the opening relative to the valve chamber.

A gas chromatograph that includes a metering chamber, two separating devices and a multiport valve unit having switching functions for metering, straight separation, cutting and backflush, where the multiport valve unit is formed as a multiport diaphragm valve.

A diaphragm valve for gas analysis applications is provided. The valve includes a valve cap provided with a plurality of process conduits extending therethrough, a valve body engageable with the valve cap and having a body interface provided with a recess, a diaphragm positioned between the valve cap and valve body and having a process groove for circulating fluid therein, the process groove engaging the recess, a plunger assembly provided within the valve body, the plunger assembly comprising a plurality of plungers movable between a closed position wherein the plunger engages the diaphragm, and an open position wherein the plunger is spaced from the diaphragm, and an actuating assembly comprising a gas inlet to allow the injection of actuating gas therein, the actuating assembly comprising a purging system for purging a region located between the diaphragm and the body interface, whereby the actuating gas is used for purging the region.

A foil transducer for a valve, including at least one firmly arranged holding part, at least one displaceable force transmission part, an electroactive foil composite structure and at least two electrodes. The electroactive foil composite structure has an actuating direction in which the electroactive foil composite structure is extended on actuation. The actuating direction lies in a plane spanned by the electroactive foil composite structure.

A diaphragm valve, in particular for fluid media, has a valve body, a diaphragm and a valve drive, by the actuation of which the diaphragm can be acted upon. The valve body and the diaphragm are permanently connected to form a unit in that the diaphragm is clamped in a circumferential edge portion between the valve body and a counter piece and is riveted thereto. Further proposed is a method of manufacturing such a valve.

A micro-valve includes an orifice plate having a first surface, a second surface and an orifice extending from the first surface to the second surface. An actuating beam is disposed in spaced relation to the orifice plate. The actuating beam includes a base portion and a cantilevered portion. The base portion is separated from the orifice plate by a predetermined distance. The cantilevered portion extends from the base portion such that an overlapping portion thereof overlaps the orifice. The actuating beam is movable between a closed position and an open position. The micro-valve also includes a sealing structure including a sealing member disposed at the overlapping portion of the cantilevered portion. When the actuating beam is in the closed position, the cantilevered portion is positioned such that the sealing structure seals the orifice so as to close the micro-valve.

The present disclosure provides a water heating system for efficient heating of water for immediate use that fits either to industrial applications or household applications. The water heating system is suitable to be combined with a solar heating unit and it can be operated on electric power or on gas-based heating units for providing hot water to multiple consumers for household or industrial utilization. Furthermore, the system can be stand-alone, operating without any additional water heating system and can provide an immediate stream of hot water, e.g. it can be installed within a water supplying appliance. The water can operate in two modes: (1) heating for immediate use of hot water; and (2) heating water to be contained in a reservoir for later use. The system uses a two (bi) directional flow valve.

A device for regulating the flow of a fluid id formed with a valve housing having at least two valve ports. A first fluid path that extends between the at least two valve ports is formed in the valve housing. A first valve seat is assigned to the first fluid path. A first closing element is arranged to be coupled to the first valve seat to block or release the first fluid path, and an electromagnetic actuating unit for actuating the closing element. The actuating unit has a, first electromagnet and a second electromagnet that are coupled to the closing element via a coupling mechanism. The first and second electromagnets additively act on the closing element to displace the closing element between at least two positions.

A device for controlling fluid media, such as a directional control valve, includes a molded part made from an elastomeric material in which at least one line section is formed. The line section connects at least two connections to one another, between which at least one flow path extends. The device or valve has a control unit that includes an actuator coupled to at least one blocking element. The at least one blocking element is displaced by the actuator between a blocking position and a release position. In the blocking position, the at least one blocking element deforms the at least one line section in order to block the at least one flow path.

A recess 22 provided in a passage block 20; a diaphragm covering the recess 22 to form a valve chest 21 in which a fluid flows; an inflow port 23 opened at the recess 22 and allowing the fluid to flow into the valve chest 21; an NC outflow port 24 and an NO outflow port 25 opened at the recess 22 and allowing the fluid to flow out from the valve chest 21; by oscillating the diaphragm, the diaphragm is closely fitted to any one of a first valve seat 24b formed by an opening 24a of the NC outflow port 24 and a second valve seat 25b formed by an opening 25a of the second outflow port 25, to allow the fluid in the valve chest 21 to flow out from the other outflow port. The recess 22 has a first inclined portion 81 and a second inclined portion 82 having a depth gradually increasing from the first valve seat 24b and the second valve seat 25b toward the inflow opening 23.