A backflow preventer, a hose coupling of a hydrant and a hydrant
AssigneeVonroll Infratec (Investment) AG
InventorChristoph FLURY
Life of this patent
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Abstract
A backflow preventer adapted for installation in an inner conduit of a hose coupling of a hydrant is disclosed. The backflow preventer contains a non-return device having a closing body, a seal seat, and a resetting device. The resetting device is adapted to resiliently pretension the closing body into sealing engagement against the seal seat.
Claims20
A backflow preventer (12;112;212) adapted to be installed in an inner conduit of a hose coupling (10;110;210) of a hydrant, wherein the backflow preventer (12;112;212) contains a non-return device (14;114;214) comprising a closing body (16;116;216), a seal seat (18;118;218) and a resetting device (20;120;220), wherein the resetting device (20;120;220) is adapted to resiliently pretension the closing body (16;116;216) into sealing engagement against the seal seat (18;118;218).
Dependencies are inferred from the claim text.