Valve for controlling a fluid flow

A valve comprising:

• (a) a closure element having at least one sleeve section, the at least one sleeve section having a longitudinal axis and the at least one sleeve section having a first seal device and a second seal device spaced at a first distance from the first seal device along the longitudinal axis;
• (b) a valve housing comprising a fluid inlet, a fluid outlet, and a fluid space enclosed between the fluid inlet and the fluid outlet, the valve housing comprising a first counter-seal device and a second counter-seal device spaced from the first counter-seal device by the first distance;
• and
• (c) an actuator, the actuator having stationary parts and movable parts with respect to the valve housing;
• wherein the closure element is movable along the longitudinal axis by the actuator to open and close a fluid connection between the fluid inlet and the fluid outlet;
• wherein at least the movable parts and the closure element are arranged entirely within the fluid space;
• wherein at least one double-seal seat is formed by the first seal device, the first counter-seal device, the second seal device, and the second counter-seal device;
• wherein in order to close the fluid connection, the first seal device is in sealing contact with the first counter-seal device along a first closed sealing line and the second seal device is in sealing contact with the second counter-seal device along a second closed sealing line;
• wherein a first area enclosed by the first closed sealing line in projection along the longitudinal axis and a second area enclosed by the second closed sealing line in projection along the longitudinal axis have a ratio between 6/10 and 10/6;
• wherein at least two devices of the group of the first seal device, the second seal device, the first counter-seal device and the second counter-seal device comprise a seal produced from an elastic material;
• wherein said two seals are independent components from each other, and
• wherein the valve has at least two double-seal seats.

A valve comprising:

• (a) a closure element having at least one sleeve section, the at least one sleeve section having a longitudinal axis and the at least one sleeve section having a first seal device and a second seal device spaced at a first distance from the first seal device along the longitudinal axis;
• (b) a valve housing comprising a fluid inlet, a fluid outlet, and a fluid space enclosed between the fluid inlet and the fluid outlet, the valve housing comprising a first counter-seal device and a second counter-seal device spaced from the first counter-seal device by the first distance;
• and
• (c) an actuator, the actuator having stationary parts and movable parts with respect to the valve housing;
• wherein the closure element is movable along the longitudinal axis by the actuator to open and close a fluid connection between the fluid inlet and the fluid outlet;
• wherein at least the movable parts and the closure element are arranged entirely within the fluid space;
• wherein at least one double-seal seat is formed by the first seal device, the first counter-seal device, the second seal device, and the second counter-seal device;
• wherein in order to close the fluid connection, the first seal device is in sealing contact with the first counter-seal device along a first closed sealing line and the second seal device is in sealing contact with the second counter-seal device along a second closed sealing line;
• wherein a first area enclosed by the first closed sealing line in projection along the longitudinal axis and a second area enclosed by the second closed sealing line in projection along the longitudinal axis have a ratio;
• the ratio being one of the following group:
• between 6/10 and 98/100, between 6/10 and 97/100, between 6/10 and 96/100, between 6/10 and 95/100, between 6/10 and 94/100, between 6/10 and 93/100, between 6/10 and 92/100, between 6/10 and 91/100, between 6/10 and 9/10, between 6/10 and 89/100, between 6/10 and 88/100, between 6/10 and 87/100, and between 6/10 and 85/100;
• wherein at least two devices of the group of the first seal device, the second seal device, the first counter-seal device and the second counter-seal device comprise a seal produced from an elastic material;
• wherein said two seals are independent components from each other, and
• wherein the sleeve section, in so far as more than one double-seal seat is present, has between respectively adjacent double-seal seats at least one circumferential through-opening, via which an inner side and an outer side of the sleeve section are in fluid connection.

A valve comprising:

• (a) a closure element having at least one sleeve section, the at least one sleeve section having a longitudinal axis and the at least one sleeve section having a first seal device and a second seal device spaced at a first distance from the first seal device along the longitudinal axis;
• (b) a valve housing comprising a fluid inlet, a fluid outlet, and a fluid space enclosed between the fluid inlet and the fluid outlet, the valve housing comprising a first counter-seal device and a second counter-seal device spaced from the first counter-seal device by the first distance;
• and
• (c) an actuator, the actuator having stationary parts and movable parts with respect to the valve housing;
• wherein the closure element is movable along the longitudinal axis by the actuator to open and close a fluid connection between the fluid inlet and the fluid outlet;
• wherein at least the movable parts and the closure element are arranged entirely within the fluid space;
• wherein at least one double-seal seat is formed by the first seal device, the first counter-seal device, the second seal device, and the second counter-seal device;
• wherein in order to close the fluid connection, the first seal device is in sealing contact with the first counter-seal device along a first closed sealing line and the second seal device is in sealing contact with the second counter-seal device along a second closed sealing line;
• wherein a first area enclosed by the first closed sealing line in projection along the longitudinal axis and a second area enclosed by the second closed sealing line in projection along the longitudinal axis have a ratio between 6/10 and 10/6;
• wherein at least two devices of the group of the first seal device, the second seal device, the first counter-seal device and the second counter-seal device comprise a seal produced from an elastic material;
• wherein said two seals are independent components from each other, and
• wherein the first and/or the second seal device of the at least one double-seal seat and/or the first and/or the second counter-seal device of the at least one double-seal seat have the seal, which is arranged in a groove-shaped depression.

A valve comprising:

• (a) a closure element having at least one sleeve section, the at least one sleeve section having a longitudinal axis and the at least one sleeve section having a first seal device and a second seal device spaced at a first distance from the first seal device along the longitudinal axis;
• (b) a valve housing comprising a fluid inlet, a fluid outlet, and a fluid space enclosed between the fluid inlet and the fluid outlet, the valve housing comprising a first counter-seal device and a second counter-seal device spaced from the first counter-seal device by the first distance;
• and
• (c) an actuator, the actuator having stationary parts and movable parts with respect to the valve housing;
• wherein the closure element is movable along the longitudinal axis by the actuator to open and close a fluid connection between the fluid inlet and the fluid outlet;
• wherein at least the movable parts and the closure element are arranged entirely within the fluid space;
• wherein at least one double-seal seat is formed by the first seal device, the first counter-seal device, the second seal device, and the second counter-seal device;
• wherein in order to close the fluid connection, the first seal device is in sealing contact with the first counter-seal device along a first closed sealing line and the second seal device is in sealing contact with the second counter-seal device along a second closed sealing line;
• wherein a first area enclosed by the first closed sealing line in projection along the longitudinal axis and a second area enclosed by the second closed sealing line in projection along the longitudinal axis have a ratio between 6/10 and 10/6;
• wherein at least two devices of the group of the first seal device, the second seal device, the first counter-seal device and the second counter-seal device comprise a seal produced from an elastic material;
• wherein said two seals are independent components from each other, and
• wherein the valve has one of the following group:
• three double-seal seats, four double-seal seats, and five double-seal seats.