Valve and use thereof in a fire-extinguishing system

A valve, comprising:

• a valve housing which has a fluid inlet chamber and a fluid outlet chamber,
• a valve seat which is arranged between the fluid inlet chamber and the fluid outlet chamber, and a closure body which is movable back and forth between a release position and a blocking position,
• wherein the closure body abuts against the valve seat in a fluid-tight manner in the blocking position, and wherein the fluid inlet chamber and the fluid outlet chamber are connected to one another in a fluid-conducting manner in the release position,
• wherein the valve seat and the closure body each have a sealing surface, which are opposite one another in the blocking state, and
• an elastically deformable sealing element which is arranged between the sealing surfaces in the blocking state and which completely stretches over one of the sealing surfaces,
• wherein the closure body has a main body, which is mounted pivotably on the valve housing, and a valve disk, wherein the sealing element has a retaining section which is clamped between the main body and the valve disk, and
• wherein an annularly encircling thickened part is formed on the retaining section.

A valve, comprising:

• a valve housing which has a fluid inlet chamber and a fluid outlet chamber,
• a valve seat which is arranged between the fluid inlet chamber and the fluid outlet chamber, and a closure body which is movable back and forth between a release position and a blocking position,
• wherein the closure body abuts against the valve seat in a fluid-tight manner in the blocking position, and wherein the fluid inlet chamber and the fluid outlet chamber are connected to one another in a fluid-conducting manner in the release position,
• wherein the valve seat and the closure body each have a sealing surface, which are opposite one another in the blocking state, and
• an elastically deformable sealing element which is arranged between the sealing surfaces in the blocking state and which completely stretches over one of the sealing surfaces,
• wherein the closure body has a main body, which is mounted pivotably on the valve housing, and a valve disk, wherein the sealing element has a retaining section which is clamped between the main body and the valve disk, and
• wherein the main body has a mounting surface which faces the valve disk, and the valve disk is coupled pivotably to the main body such that the valve disk can be deflected through an angle value relative to the mounting surface.