UTMATNINGSPUMP FOR MONTERING PA BEHALLARE OCH FORSEDD MED VENTILORGAN BILDANDE EN ENHET

摘要

A pump for dispensing a product from a retail package is molded of plastic. The reciprocable member includes a piston having a flexible skirt. The inlet and outlet valves are resiliently deflectable margins on either end of a unitary valve member. The vent passage and the outlet passage are closed when the pump is at rest.