Spray dispenser

摘要

A spray dispenser is provided, the spray dispenser comprising a container for holding a liquid to be dispensed and a dispensing assembly for extracting liquid from said container, the dispensing assembly comprising a pressure-relief valve for release of excessive pressure in the container and a filter arranged to permit egress of gas through the filter, inhibit egress of liquid from the container and to inhibit ingress of contaminants into the container through the pressure relief valve. A dispensing assembly for use is a spray dispenser is also provided.

主权项

1. A spray dispenser comprising a container for holding a liquid to be dispensed and a dispensing assembly for extracting liquid from said container, the dispensing assembly comprising a pressure-relief valve for release of excessive pressure in the container, wherein the valve is selected from the group consisting of a swing valve, a ball check valve and a duckbill valve, a filter housing removably coupled with the dispensing assembly, and a filter arranged in the filter housing to permit egress of gas from the container through the filter and through the pressure-relief valve, the filter inhibiting egress of liquid from the container through the filter, the pressure-relief valve being closed in the absence of excessive pressure to inhibit ingress of air and contaminants into the container wherein:
the filter is in a gas flow path between the interior of the container and the pressure-relief valve, or the pressure-relief valve is in a gas flow path between the interior of the container and the filter.