Patent ID: 6916007
Filing Date: 2005-07-12
Classification: B67D,F16L,Y10T

Abstract:
1. A closure valve comprising: a housing having first and second ends defining a flow passageway; a poppet member disposed within said flow passageway and retained within said housing; and a sleeve disposed within said housing and defining an opening in fluid communication with said poppet member and flow passageway of said housing; said sleeve being biased so that said closure valve is in a normally closed position and said sleeve being movable so as to actuate said closure valve to an open position, said sleeve including a flexible sealing member disposed about a circumference of said sleeve at said opening of said sleeve, said sealing member forming a fluid tight seal with said poppet member in said closed position, and said sleeve including a flexible sealing structure disposed about a circumference of said sleeve defined by an outer sidewall of said sleeve, said sealing structure forming a fluid tight seal with said housing, said sealing member and said sealing structure being integrally molded lip seals that respectively define a wall structure extending from each circumference in a direction substantially as said flow passageway, whereby said sleeve is a one-piece molded part.