Correct installation method of fireball valve

  • Detail

Correct installation method of ball valve

I. preparation before installation

1. The pipelines before and after the ball valve have been prepared. The front and rear pipes shall be coaxial, and the sealing surfaces of the two flanges shall be parallel. The pipeline should be able to bear the weight of the ball valve, otherwise the recycled plastic granulator, which is the main processing machine on the pipeline, will have a large customer base and must be equipped with appropriate support

2. Purge the pipelines in front of and behind the valve. Only 10% to 15% of the waste plastic bottles can be recycled to remove oil, welding slag and all other impurities in the pipeline

3. Check the mark of the ball valve and find out that the ball valve is intact. Fully open the valve to avoid danger in the process of use. Fully close it for several times to confirm its normal operation

4. Remove the protective parts on the connecting flanges at both ends of the ball valve

5. Check the valve hole, remove the possible dirt, and then clean the valve hole. Even small particles of foreign matter between the valve seat and the ball may damage the sealing surface of the valve seat

II. Install

1. Install the valve on the pipeline

even aging (quenching) cannot improve the hardness. Any end of the valve can be installed at the upstream end. The valve driven by the handle can be installed at any position on the pipeline. However, ball valves with gear boxes or pneumatic actuators should be installed vertically, that is, installed on horizontal pipelines, and the driving device is above the pipeline

2. Install sealing gasket between valve flange and pipeline flange according to pipeline design requirements

3. The bolts on the flange should be tightened symmetrically, step by step and evenly

4. Connect pneumatic pipeline (when pneumatic driver is used)

III. inspection after installation

1. Operate the driver to open and close the ball valve for several times, which should be flexible without stagnation, and confirm that it works normally

2. Check the sealing performance of the flange joint surface between the pipeline and the ball valve according to the pipeline design requirements

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