1), Check the preparation work before installation

1. Make sure the installation site pipeline is coaxial and the two flanges on the pipeline should keep parallel; confirm the pipeline could support the ball valve's weight. If not, an appropriate support needs to be equipped on the pipeline before installation.
2. Confirm whether there is impurity and welding slag, etc or not in the pipeline. For it must be clean.
3. Check the ball valve's nameplate and do full open and full close operation on ball valve for several times. Check it could be normal operation and excellent without damage.
4. Wash and examine the valve inside is clean after removing protected cover both ends of the valve. For the ball valve's sealing face is ball shape, even a tiny sundry could damage the sealing face.

2),Installation
1. Any part of the ball valve could be fixed at the upstream ends and the hand lever ball valve could be fixed at any position of pipeline. If the ball valve needs to be equipped with actuator (gearbox or electric, pneumatic actuator), the actuator must be vertical. The valve import and export should be in a horizontal position.
2. The flanges and pipeline flanges are designed according to pipeline, which need to equip packing seal.
3. The bolts on the flange should be screwed down symmetrically, gradually, uniformly.
4. If the valve adopts electric actuator, pneumatic actuator or hydraulic actuator, please equipping the air supply and main supply according to instruction.

3),The inspection after installation
1. Finishing the installation, please start the open and close operation several times and you should do it flexibly so that the stress will be uniform and the operation will be normal.
2. According to pipeline pressure design, test the performance of ball valve and pipe flanges' junction surface after pressure opening.

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