Valve

A valve for controlling a fluid flow, comprising a valve housing, which is provided with a first fluid connection and with a second fluid connection and with a fluid channel extending between the first fluid connection and the second fluid connection, further comprising a valve member, which is located in the fluid channel and which is pivotally mounted with a pivot pin in the valve housing, and with a drive for introducing a movement onto an upper side of the valve member, the valve member comprising a carrier and a flexible membrane which is fixed by a sealing region to an underside of the carrier, which underside is oriented opposite to the upper side of the carrier and which flexible membrane is connected to the valve housing by a circumferential fastening region, wherein a deformation region of the flexible membrane is formed between the sealing region and the circumferential fastening region of the flexible membrane, wherein the sealing region is provided for a sealing abutment against a valve seat which is located opposite to the underside of the carrier in the fluid channel, wherein the deformation region is arranged between a first deformation plane and a second deformation plane, the first deformation plane and the second deformation plane each being aligned parallel to a pivot axis determined by the pivot pin and delimiting a deformation space, and wherein the pivot pin is accommodated at least partially in the deformation space,

• wherein an orifice of the valve seat determines an orifice plane and wherein a straight line which extends from an intersection of a central axis of the orifice with the orifice plane to the pivot axis of the carrier assumes an angle with respect to the orifice plane which angle is smaller than 30 degrees.

A valve for controlling a fluid flow, comprising a valve housing, which is provided with a first fluid connection and with a second fluid connection and with a fluid channel extending between the first fluid connection and the second fluid connection, further comprising a valve member, which is located in the fluid channel and which is pivotally mounted with a pivot pin in the valve housing, and with a drive for introducing a movement onto an upper side of the valve member, the valve member comprising a carrier and a flexible membrane which is fixed by a sealing region to an underside of the carrier, which underside is oriented opposite to the upper side of the carrier and which flexible membrane is connected to the valve housing by a circumferential fastening region, wherein a deformation region of the flexible membrane is formed between the sealing region and the circumferential fastening region of the flexible membrane, wherein the sealing region is provided for a sealing abutment against a valve seat which is located opposite to the underside of the carrier in the fluid channel, wherein an orifice of the valve seat determines an orifice plane and wherein a straight line, which extends from an intersection of a central axis of the orifice with the orifice plane to a pivot axis of the carrier, assumes an angle with respect to the orifice plane which angle is smaller than 30 degrees, wherein a first sealing section and a second sealing section are formed on the underside of the carrier and are located in a common sealing plane and wherein a protrusion is located between the first sealing section and the second sealing section, which protrusion projects above the common sealing plane and which defines a protrusion surface, wherein a distance between the protrusion surface and the pivot pin is at least 50 percent of a diameter of the pivot pin.