Closure valve apparatus for fluid dispensing

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.