REPLACEABLE VALVE SYSTEM

摘要

A replaceable valve system for a fluid dispenser having a container with an opening for slidingly receiving the valve system, including an outer slee ve having an inlet end and an outlet end and being slidable in the container op ening, the outer sleeve having a valve seat adjacent the inlet end thereof, a plung er slidable in the outer sleeve and having an internal passage for fluid flow f rom an inlet end to an outlet end, a one way valve positioned adjacent the inlet en d for permitting fluid flow from the plunger inlet end to the outlet end while blo cking fluid flow from the outlet end to the inlet end, an inner sleeve carried wit hin the outer sleeve, a first spring carried between the plunger and inner sleeve ur ging the plunger and inner sleeve away from each other, a second valve positioned wit hin the inner sleeve, a second spring positioned between the second valve and in ner sleeve urging the second valve into sealing engagement with the outer sleeve valve seat for blocking fluid flow from the outer sleeve into the container.