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Discharging glycol pressure relief valve

    1. Check system pressure and temperature. Make sure they are below the relief valve settings before attempting discharge.
    2. Locate the relief valve discharge pipe. Verify it is non-obstructed and directed to a safe drainage location.
    3. Slowly lift and open the relief valve lever or turn the handwheel to begin discharging glycol.
    4. Open valve fully and allow system pressure to vent and glycol to drain out completely.
    5. Once discharge slows to a trickle, slowly close the relief valve lever or handwheel. Close it completely once all pressure has vented.
    6. Monitor system pressure and temperature as it re-pressurizes. Repeat discharge process if pressure becomes excessive again.
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