Patents Assigned to Grove Valve and Regulator Company
  • Pressure surge relief system
    Patent number: 3972364
    Abstract: A pressure surge relief system including a valve which is opened to relieve the pipeline when line pressure overcomes a pilot chamber pressure. A pilot load duct with a variable orifice device therein connects the chamber to the pipeline. In the event of a surge, the orifice retards pressure build-up in the chamber so that it will be overcome by higher pressure in the pipeline. Pressure responsive means makes the orifice device more restrictive as pressure increases to produce a pressure lag at the control chamber even at lower velocities.
    Type: Grant
    Filed: March 6, 1975
    Date of Patent: August 3, 1976
    Assignee: Grove Valve and Regulator Company
    Inventor: Richard S. Brumm
  • Expansible tube valve
    Patent number: 3942756
    Abstract: An expansible tube valve having inlet and outlet body and closures with a generally cylindrical body enclosure between them. A flexible tube embraces a slotted core and integral enlarged beads around the ends of the tube are confined in accommodating annular recesses. Being so confined, the beads serve as retainer means for the tube ends and function also as body seals, being under moderate compression between cylindrical surfaces on the end closures and the interior of the body enclosure.
    Type: Grant
    Filed: October 21, 1974
    Date of Patent: March 9, 1976
    Assignee: Grove Valve and Regulator Company
    Inventors: Richard S. Brumm, Gary D. Parola
  • Cam locked ball valve
    Patent number: 3934606
    Abstract: A trunnion mounted ball valve with cam plates mounted on the stem axis. Cam followers on the seat rings engage in cam slots in the plates to move the seats positively into firm engagement with the ball at the open and closed positions thereof and retract them free of the ball as it is moved between those positions. The seats slide axially in slide rings which are threaded into the body around the flow passage. The valve ball, seat rings, and slide rings may be removed as a unit through the valve top opening.
    Type: Grant
    Filed: June 20, 1974
    Date of Patent: January 27, 1976
    Assignee: Grove Valve and Regulator Company
    Inventor: Raymond E. Matthews
  • Pipeline surge reliever with sanitary barrier
    Patent number: 3933172
    Abstract: In a pressure surge relief system wherein a valve opens to relieve the pipeline when line pressure overcomes a pilot chamber gas pressure and including an accumulator which transfers the pressure of the pipeline liquid to the gas in the pilot chamber, the improvement comprising a column of relatively inert fluid which isolates the elastomer components of the accumulator from the possibly corrosive pipeline fluid.
    Type: Grant
    Filed: February 24, 1975
    Date of Patent: January 20, 1976
    Assignee: Grove Valve and Regulator Company
    Inventor: Donald M. Allen