Patents Assigned to Water Technology Resources
  • Patent number: 9091367
    Abstract: A backflow capable ball check valve includes a valve body including a fluid flow passage and a ball seat within the fluid flow passage. A valve ball is within the fluid flow passage and is configured for seating on the ball seat. The valve ball is movable between a normal operation and backflow capable modes. A stem and saddle assembly is coupled with the valve body, and the stem and saddle assembly is configured to cup the valve ball. Movement of the stem and saddle assembly moves the valve ball from the normal operation mode to a backflow capable mode. In the backflow capable mode the stem and saddle assembly positions the valve ball away from the ball seat with the saddle cupping the valve ball in surface to surface contact, for instance according to pivoting at a movable joint.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: July 28, 2015
    Assignee: Water Technology Resources
    Inventor: Matthew L.T. Waldor