A, the preparation before installation

1, ball valve and pipeline prepared. Pipe should be before and after coaxial, two flange seal face should be parallel. Pipe should be able to bear the weight of the ball valve, otherwise pipe must comply with the support of the appropriate.

2, the valve and pipeline sweep clean, remove the oil pipe welding slag, and all the other impurities.

3, check the sign of ball valve, find out the ball valve intact. Place the full open full close several confirmed the normal work.

4, down on both ends of the connecting flange ball valves protect a.

5, check valve hole may have clear dirt, and then clean the hole. Seat and the ball even if only a small particles between the foreign bodies may also damage seat sealing surface.

Second, installation

1, the valve installed on the line.

The valve can be installed in any end the upstream. With the handle of the valve can be installed driver in the line of any position. But with gear box or pneumatic drive ball valve should be installed upright, that is installed in horizontal pipe runs, and drive in a pipe to the top.

2, valve and pipe flanges flanges according to the design requirements of pipeline between installed on the gasket.

3, flange bolts should be symmetrical, successive, even on tight.

4, links, pneumatic pipe (adopt pneumatic drive).

Three, after installation check

1, operation drive and shut the ball valve, several times, to be flexible and without sluggish acerbity, confirmed that they work.

2, according to the pipeline design requirements of pipeline and ball valve flange surface between the combination sealing performance examination.