Patents Assigned to Parks-Cramer Company
  • Changeover valves with bypass and bent valving
    Patent number: 3935108
    Abstract: Changeover valves are provided for a dual filter system which are characterized by auxiliary bypass and vent valving to facilitate changing over from one filter to the other. The bypass valving allows a process fluid to fill the second filter while the first is still in service and without a substantial reduction in process fluid flow or pressure to downstream equipment; and the vent valving permits elimination of air or gases from the second filter before it is put into service.
    Type: Grant
    Filed: October 7, 1974
    Date of Patent: January 27, 1976
    Assignee: Parks-Cramer Company
    Inventor: Louis V. Forgues