Patents Assigned to Ply-Flow Engineering, Inc.
  • Piping system for hazardous fluids
    Patent number: 4723441
    Abstract: The leakage of hazardous fluid from the pipe sections or from between the pipe sections is monitored by butting concentric pipe section sets which define a cylindrical leakage collection and monitoring means to a special fitting which has a pair of seals and a passage to the collection means therebetween, so that leakage at the pipe intersections is collected and passed to the normal pipe-defined leakage collection and detection apparatus used to monitor pipe section leakage.
    Type: Grant
    Filed: November 7, 1985
    Date of Patent: February 9, 1988
    Assignee: Ply-Flow Engineering, Inc.
    Inventor: John M. Sweeney