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Ernst Flow Industries™ automatic ball check valves are recommended to help provide protection against physical 300 Series injury and loss of product if glass breakage should occur. 16633 Foltz Parkway, Strongsville, OH 44149 Tel 800-992-2843 www.ernstflow.com info@ernstflow.com...
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OPERATION Ernst Flow Industries™ ball check valves are designed to isolate the gauge glass from the vessel in the event of a gasket or glass rupture. The stem of a Ernst Flow Industries™ ball check valve has an extended needle feature to dislodge the ball check when needed. In the closed position, the needle portion of the valve stem extends through the valve seat and prevents the ball check from sealing against the ball check (backside) seating surface.
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COMMISIONING It is important to commission a gauge glass equipped with safety ball check valves properly to avoid false level indications. If the valves are opened too quickly, the ball checks will isolate the gauge before the level can equalize with that of the vessel. Step 1: Open the top isolation valve by rotating the valve handle counterclockwise 1/4 to 1/2 turn.
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