초록 ▼

A plastic vent valve (1) for containers for transporting and storing liquids has a cylindrical valve housing(2) which is made as a threaded plug (3) and is screwed onto a screw cover (8) for closing an opening of a plastic inner container of a palletized container. The valve has a valve membrane (4)

A plastic vent valve (1) for containers for transporting and storing liquids has a cylindrical valve housing(2) which is made as a threaded plug (3) and is screwed onto a screw cover (8) for closing an opening of a plastic inner container of a palletized container. The valve has a valve membrane (4), a surge disk (5), a surge cover (6), and a sealing cap (7).

대표청구항 ▼

[ I claim:] [1.] Plastic vent valve for containers for transporting and storing liquids, and adapted to be inserted into a screw cap or a screw plug for closing an opening of a container, the valve having a cylindrical valve housing comprised of a threaded plug for screwing into a corresponding thre

[ I claim:] [1.] Plastic vent valve for containers for transporting and storing liquids, and adapted to be inserted into a screw cap or a screw plug for closing an opening of a container, the valve having a cylindrical valve housing comprised of a threaded plug for screwing into a corresponding threaded hole of the screw cap or screw plug, and a valve opening which can be opened and closed by a valve membrane and a splash guard for the valve membrane to protect against the liquid stored and transported in the container, wherein the cylindrical valve housing has a central hub which is held by ribs, said ribs extending in a star shape from the hub outwardly to an annular collar and air passage openings being formed between said ribs, said elastic valve membrane constructed and arranged to open and close said air passage openings between said ribs, said valve membrane having a hat profile with a hat profile opening pointing towards the annular collar of said valve housing and in a closed position abuts with an annular edge of the annular collar of the valve housing, the collar forming a valve seat, a surge cover placed on an inner end of the hub and having an outside edge which forms with an inner end of the valve housing, a peripheral passage slot for air entering the container and which is used to hold the valve membrane to the hub, a surge disk with at least one passage opening for air inserted between the valve membrane and the surge cover and together with the surge cover forming a labyrinth seal for protection of the valve membrane against liquid penetrating into the valve housing, and retaining segments on an outer edge of the valve housing for securing a sealing cap, the outer edge of the annular collar having between the retaining segments, outside passage openings for air flowing into the container through the valve housing with the valve membrane opened.