US 9,073,740 B2 · Filling valve

Abstract

The invention discloses a valve including a valve body with a valve inlet and a valve outlet. The valve body is joined to a bellows between the valve inlet and the valve outlet, the bellows having an annular side wall formed in a concertina formation with inner and outer corners wherein the side wall has a non-constant thickness along its length, the side wall being thicker at the outer corners and thinner at the inner corners. The bellows further has an annular mounting base for attachment to the valve body. The valve body has an annular flange from which extends an upstanding collar, wherein the mounting base is clamped between the valve body and the collar. The mounting base has a width being wider than a gap formed between the valve body and the collar so that the mounting base is compressed when clamped between the valve body and the collar.

Claims21

Dependent claims

A valve including a valve body with a valve inlet and a valve outlet;

a bellows being joined at one end externally to the valve body between the valve inlet and the valve outlet;
a plug located transversally inside the bellows, wherein the bellows has an annular side wall formed in a concertina formation with inner and outer corners and wherein the side wall has a non-constant thickness along its length, the side wall being thicker at the outer corners and thinner at the inner corners, the plug being adapted to seal against the side wall when the bellows is fully expanded or partially compressed, the plug further being adapted to be spaced apart from the side wall when the bellows is compressed by more than 40%.

Dependencies are inferred from the claim text.

Filling valve

Life of this patent

Filling valve

Life of this patent

Abstract

Claims21