SOMAS MTV - Procedure to Evaluate a Leakage on a Butterfly Valve with Gear; Installed in a Pipeline

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Edition: 2021-04 Original document - Mi-205 EN
6.2.2 Procedure to evaluate a leakage on a butterfly valve with gear
installed in a pipeline
1. Open the butterfly valve entirely, to flush out existing particles on the sealing areas.
2. Make sure that no impurities was clamped between the seat and the disc.
3. Close the butterfly valve.
1 End position bolt “open” position 2 End position bolt “closed” position
Fig.6-3 End position bolts on gear actuator