is pressed over the neck of the bottle the skirt 39 elastically flexes to allow the first annular rim 32 to pass over the second annular rim 35 after the first annular passes over the second annular rim the elasticity of the skirt forces the second annular rim back toward the neck the first and second locking edges are then positioned together and prevent the cap from being removed additionally the flexible skirt 39 extends into the groove 38 and the shape of the groove 38 holds the edges of the skirt in place to provide more holding power returning to fig1 slide housing 22 is housed within the cavity between valve walls 11 and 18 of housing 17 slide housing 22 is slidable along its longitudinal axis between a completely open position fig1 and a completely closed position fig2 in the completely closed position the product passageway 12 is not aligned with the feed tube 9 and air passageway 14 is not aligned with the air orifice 13 as illustrated in fig2 in the completely closed position slide housing 22 completely seals off feed tube 9 and air orifice 13 slide housing 22 is slideably removed within valve walls 11 and 18 of housing 17 a rim 23 on housing 17 restrains the inward and outward movement of the slide housing slide housing 22 includes a stem portion 24 stem portion 24 is integrally molded with the slide.