Abstract: A three piece full port ball valve for use with a form for producing a cast concrete article is provided wherein the housing of the valve has been modified by creating openings through the valve housing to access the flow opening in the ball member for clearing concrete slurry therefrom after the form has been filled. Additional openings in the housing at other locations can be created for cleaning around the ball member and the inside of the housing.
Type:
Grant
Filed:
January 25, 2002
Date of Patent:
May 18, 2004
Assignee:
Naams, LLC
Inventors:
Alma L. Staskiewicz, William S. Long, III