A valve comprises a first rigid layer having a substantially planar first surface, a second rigid layer having a substantially planar second surface facing the first surface and a substantially planar third surface opposite the second surface and a flexible layer positioned between the first and second surfaces. A valve chamber is demarcated by a concave surface in the substantially planar first surface and one surface of the flexible layer and at least one first fluid passageway in the first ri...

A valve for regulating the flow of a liquid, for example in liquid chromatography, comprises a valve seat and a valve ball which are made of electrically conductive ceramic or glass material. Due to the electric conductivity, electrostatic charging is avoided which would otherwise attract dirt particles and lead to contamination and leakage of the valve. The valve is chemically inert and is not corroded by the solvents typically used in analytical chemistry.

The invention relates to a valve, in particular for the fluid circulation in a motor vehicle, having a housing (12) with at least one inlet (14) and at least one outlet (16, 18) that communicate with one another via a passage (20), and having a valve member (22), which is embodied as a movable flap (24) that monitors the passage (22), wherein the passage (20) has a chamber (26) in which the flap (24) is disposed and into which the at least one inlet (14) and the at least one outlet (16, 18) disc...

A valve (10) has a valve housing (12), at least one inlet conduit (14) and at least one outlet conduit (16), a movable lifting rod (28), one end of which discharges into an actuator (68), and at least one valve member (30), which is secured to the lifting rod (28) and cooperates with at least one valve seat (20). The at least one valve member (30) upon opening of the at least one outlet conduit (16) emerges from the valve housing (12) of the valve (10).

A valve for controlling the flow of granules from a first container to a second container, the valve, when in use, attached to the first container, comprising a movable valve member which is biased to a closed position and engagement means for engaging, in use, with a coupling unit attached to the second container, wherein, in use, the relative rotation of the valve to the coupling unit controls the extent to which the valve is opened.

A valve has a valve body, a valve sheet formed in the valve body which contacts the valve sheet in an axial direction, to thereby open and close the valve sheet with a knurling portion and a screwing action. A handle is combined with a handle combination unit formed in an upper portion of the valve body, so that a valve rod can ascend and descend. An oil storage chamber is located between the knurling portion and the screw, to maintain the ascending and descending of the valve rod. The angular s...

A valve (1, 8, 14) having a valve body (2) that is pressed against a valve seat (5, 11) by the pressure of a valve spring (3) supported against a valve cap (4, 10). The valve is held together in the area of the valve seat (5, 11) by an enclosure member (7, 9, 15) coated with an elastomer, and the enclosure member (9, 15) can also form the valve plate or seat.

The present invention is capable of engagement with a fluid port and capable of being open to create a fluid path, where the valve assembly includes a valve head for closing a fluid path to a port associated with a valve assembly, and a housing, and at least one engagement element formed integrally with the housing, wherein the valve assembly is characterized in that to open the valve assembly the valve head is driven into an engagement element deforming the valve head and creating the fluid pat...

A valve including a housing, a rotatable body which can turn inside the housing, and two sealing rings made of sealing material, preferably polytetrafluoroethylene or a similar plastic. The sealing rings are arranged in an axially spaced manner in the housing and rest against the spherical outer surface of the rotatable body and provide a sealing function. The valve is designed with at least one sealing ring having a sealing lip which lies essentially tangential to an outer surface of the rotata...

A valve that influences flow through a fluid connection includes a valve member that executes a motion in which the distance between a valve seat surface and the valve member varies. The valve member is in operative engagement with a damping arrangement that counteracts its motion.