Check valve and use thereof in a fluid system

Abstract

A check valve includes: a housing having a main body, which has an inlet opening, a valve body, which has a passage having an outlet opening and which is at least partly arranged in the main body and is axially movable relative to the main body, a valve element, which is at least partly arranged in the valve body for axial movement relative to the valve body and which has a through-opening, a valve member, which is arranged in the valve body between the outlet opening and the valve element and has a sealing element and a valve stem, which is axially movable relative to the valve body, a preloading element, which is designed to preload the valve member toward the valve element with a preload force, wherein the check valve also includes: a further preloading element, which is designed to preload the valve element toward the valve member with a preload force of the further preloading element, and/or another preloading element, which is designed to preload the valve body toward the inlet opening with a preload force of the other preloading element, wherein the valve element includes a sealing seat, which surrounds the through-opening and faces the sealing element, and in a closed position of the check valve the sealing element abuts the sealing seat and closes the through-opening.