| http://www.w3.org/ns/prov#value | - BRIEF DESCRIPTION OF THE DRAWINGS Further objects, features and advantages of the invention will become apparent to those skilled in the art from the following description thereof when taken in conjunction with the accompanying drawings in which: FIG. 1 presents the valve apparatus of the present invention, in exploded view, FIG. 2 is a partly cross-sectional side view of the site of one closing p
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