## How to operate swing check valve lever?
1. **How should the swing check valve lever be positioned before operation?**.
Before operating the swing check valve lever, make sure it is in the fully open position. This means that the lever should be in the vertical position, aligned with the pipe.
2. **What is the correct way to close the swing check valve lever?**.
To close the swing check valve lever, simply push the lever to a horizontal position, perpendicular to the pipe. This will indicate that the valve is fully closed.
3. **What precautions should be taken when operating the swing check valve lever?**.
When operating the swing check valve lever, make sure to do so slowly and steadily. This will prevent any sudden changes in pressure within the pipeline.
4. **How can you ensure the swing check valve lever is fully closed?**.
To ensure that the swing check valve lever is fully closed, visually inspect the position of the lever. It should be in a horizontal position, perpendicular to the pipe, indicating that the valve is closed.
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