The sanitary mixer valve has an adjustable control disc (2) for a fixed valve seat disc (1) which has water passage openings. A central passage (12) is provided in the valve seat disc and an overflow passage (20) is formed in the control disc and selectively brought to overlap with through-passages constructed in circular ring cut-out form. The through-passages (10,11) which are allocated for the feed of hot and cold water are each separated by a land (13), whereby both lands are positioned so that in a center mixing position with a fully open throughflow one side wall (21) of the overflow passage is in contact with a first side wall (130) of the two lands.

The residual pressure valve comprises a rubber tube (2) which acts as a valve seat and holds the gas control component (1) under tension. The control component has chambers (1H1, 1H2) at each end which are connected by vertical channels (K1A, K1B, K2A, K2B) to control chambers (SA, SB) on its lower side. These are separated by a radial partition (ZW).

The assembly has a valve adjusting unit (16) moved between adjusting positions using an electromagnetic actuator (14). A valve adjusting lever (18) is coupled with the unit (16) via a slide that is supported in the unit (16). The actuator has an anchor section (40) that is supported in a coil arrangement and is displaced in an axial direction during excitation of the arrangement. A guide sleeve (60) made of a soft-magnetic material is fixed in the arrangement. An outer surface of the section is coated with friction-resistant material Teflon(RTM: Polytetrafluoroethylene). An independent claim is also included for an electromagnetic actuator for a valve arrangement.

The dosing valve has a collection chamber (11) which is varied in volume by actuating the membrane (16), and which discharges into a valve output line (8). Enlarging the volume induces fluid by suction from the valve input line (7) only. Reducing the volume closes the first non return valve (13). The dosing piston (20) and membrane are operated together for discharge.

The invention relates to a shut-off fitting comprising a housing which is connected to an adjacent pipeline in a pressure tight manner, the diameter of said pipeline defining a tubular passage in the housing. Said fitting also comprises at least one closing body which can be displaced between an open position and a closed position. The inventive shut-off fitting is characterized in that the at least one closing body can be displaced by an articulated mechanism, by means of an actuator which can be vertically displaced in relation to the flow direction, in such a way that it is arranged outside the tubular passage in its open position. The closing body has a contour which is adapted to the contour of the tubular passage, in the open position, and is located on the tubular passage in a radially sealing manner.

The present invention concerns a means for controlling and/or measuring the flow of a running fluid, wherein the throttling of the flow is controlled utilizing the fluid's own differential pressure arising from the flow. The valve comprises a cover provided with a flow aperture, a main valve disc and control means consisting of a cylinder volume/piston assembly, the movement of said piston being connected to the main valve disc, and wherein the cylinder volume has been connected by a first opening (d1 min ) to the high pressure side and by a second opening (d2 min ) to the low pressure side so that the ratio of the areas of the openings is adjustable. The means comprises at least one sensing member by the aid of which the position of a part of the cylinder volume/piston assembly moving axially in the direction of the flow is measured; a data processing unit, to which the signal from the sensing member is conveyed after appropriate processing; a memory unit, in the first part of which have been stored data concerning the characteristic curve of the valve or equivalent, from which based on the signal from said sensing element, with the aid of the data processing unit, the variations of volumetric flow and or pressure can be calculated, and in the second part of said memory unit being stored the desired values of the volumetric flow and/or pressure, with which the calculated values mentioned before are compared; and at least one actuator by the aid of which the ratio of areas of the openings (d1 min , d2 min ) is adjustable for realizing the desired volumetric flow and/or pressure.

A valve stem ( 100 ) for use with a metered dose dispensing valve, said valve stem having a central longitudinal axis and comprising a first stem portion ( 101 ), a second stem portion ( 102 ) and a disk seal ( 112 ), said disk seal being disposed between the first and second stem portion along the longitudinal axis of the valve stem and said disk seal extending radially outwardly from the central longitudinal axis of valve stem so as to be capable of forming a fluid-tight seal with a portion of an internal wall of said valve.