The present invention relates to a valve (1) intended for positioning in the urethra (2) or similar of a patient in the upper part (2A) of the urethra, which exhibits means for emptying the patient's urine bladder (5) or similar through the valve (1). The valve (1) is so arranged as to be positioned in the urethra (2), etc., and to be withdrawn from it with the help of a tool capable of being accomodated in the urethra, etc., and activated from the outside (10) of the patient's body, and the val...

The invention relates to a valve with a housing, a valve seat and a setting member which is provided in the housing and has a seal, the sealing surface of which comes into contact with the valve seat in the closed position of the setting member, and wherein during the adjustment the valve seat is retained on the housing so as to be displaceable relative to the sealing surface. During the adjustment the valve seat is also movable in an angular range in such a way that the valve seat rests flat on...

The invention concerns a valve comprising a circular frame (1) whose inner edge narrows to form flexible areas (3) connecting the frame to triangular vanes (2). The areas (3) form articulations about which the vanes pivot when the valve opens or closes. In the closed position, the vanes bear against one another and the assembly adopts a pyramidal position. The valve can be produced by the injection of plastics. The entire valve may be produced in a single part.

A valve comprises a valve housing (2) with a valve inlet (11), a valve outlet (12) and a passage (66) extending through the valve housing (2) from the valve inlet (11) to the valve outlet (12). A valve seat (5) is provided in the passage which comprises a valve sealing surface (50). Further, the valve comprises a blocking element (3) adapted to be moved at least partly into the valve seat (5) for blocking the passage by abutment on the valve sealing surface (50), the blocking element being moved...

A valve comprising a valve housing (10), having a valve seat (18) therein, a valve member (16) moveable via a valve spindle (15) between positions spaced from and seated on the valve seat. The valve member is required to lap a plurality of times on the valve seat to compensate for any variation of tolerance between the valve member and the valve seat resulting from build up of medium or erosion. The valve spindle extends outwardly from the valve housing and a pair of pillars (28) extend from the...

A valve for metering a fluid including a small upper plate, a small middle plate and a small lower plate. The small middle plate has a closing element with a diaphragm region surrounding the closing element. The stroke of the closing element is limited in an axial direction by the small upper plate and by a valve seat of the small lower plate. As a result, very accurate metering of the fluid is possible. The valve is especially suitable as an injection valve for injection systems of mixture-comp...

An improved valve of the flapper plate type is disclosed, the valve comprising at least one flexible member for connecting the flapper plate and the arm actuating the flapper. The flexible member absorbs impact energy and allows restricted three dimensional movement of the flapper plate. The seals for the flapper plate and the seat comprise electrically conductive sealing materials.

A valve assembly for automatic venting of excess suction or pressure in a fluid conduit such as a sewage drain line. An elastomeric diaphragm is drawn by a stressed stem against a valve plate having a passageway therethrough which is normally closed by the diaphragm. A predetermined differential pressure across the diaphragm will lift the diaphragm away from the plate to open the passageway.

The present invention, in one embodiment, has a valve body within which is mounted a stem support; a plunger with a stem which is movably mounted for movement in the stem support to move a rounded head of the plunger to sealingly contact a sealing surface within the valve body thereby preventing flow through the valve; a piston recess in the stem which receives and holds a top portion of a piston; the piston (or some part connected thereto or formed integrally thereof) held immobile by one or mo...

Valve comprising a valve stem and a valve disc. The peripheral edge of the valve disc in the closed position comes to rest in a sealing manner against the valve seat of the corresponding valve housing. Between this sealing peripheral edge and the valve stem the valve disc is partially made of elastically yielding material. The position of the valve stem guide is such that it is possible to move the valve further in the direction of closure after the peripheral edge rests against the valve seat. ...