Wafer, Lug, (80mm - 1200mm) Double Flange, Gate The Tri Lok metal seated valve is fully rated to ASME B16.34, and complies with API 609. Tri Lok is torque-seated. Torque must be continually applied by an actuation device (manual gearbox or power valve actuator) to the valve stem to ensure the valve seals against the line pressure.
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Stray Electric Current Considerations When the Tri Lok valve is used near sources of high current or magnetic radiation, a secure bonding to earth ground should be made so as to prevent ignition due to inductive currents or a rise in temperature due to these currents.
Installation, Operation and Maintenance Manual INSTALLATION Tri Lok is designed to be installed between ASME B16.5, B16.47 flanges. When the valve is open, a portion of the disc may protrude into the pipe. Wafer, lug and some double flange configurations will protrude on both sides of the valve.
ACTUATION AND TRAVEL STOP SETTING INSTRUCTIONS Tri Lok is a quarter turn, metal-seated triple offset valve. There is no mechanical stop in the valve at the “closed” position. When installing ANY type of actuator on a Tri Lok valve, the following general instructions should be followed closely.
CAUTION The Tri Lok valve must be in the closed position to be removed from the line to prevent damaging the disc seal ring. When handling the valve, care should be taken not to scratch the seal ring, seat and gasket faces on both sides of the valve.
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