1. The vacuum butterfly valve has undergone rigorous testing whether it is manual, pneumatic, hydraulic in the factory, and electrical components. Then test the user’s sealing performance. Both sides of the inlet and outlet should be evenly fixed. Close the butterfly valve. The pressure on the inlet side is on the outlet side. Observe that there is There is no air leakage. Before the pipe strength test, the optical disc should be opened to prevent damage to the sealing pair.
2. Despite strict inspection and testing, there are also individual products produced by automatic screw deflection during transportation, which need to be re-adjusted, pneumatic, hydraulic, etc., please read the complete driver manual.
3. The control mechanism has been started, when the electric drive butterfly valve factory, good tight stroke adjustment. In order to prevent the power connection direction from being wrong, when the power is manually opened to the half-open position, press the power switch in the direction of the indicator disc check valve, and the user can be turned off in the same direction.
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