A closure valve used in a fluid dispensing assembly. The closure valve contains a housing, poppet, sleeve, and a biasing member. The closure valve provides simplified sealing structures for preventing product leakage and spill. The sealing structures being integrally molded sealing structures....http://www.google.fr/patents/US6916007?utm_source=gb-gplus-shareBrevet US6916007 - Closure valve apparatus for fluid dispensing
