How to start the test run record of pneumatic air volume butterfly valve?

2、 Replace valve seat and seal
1. Keep the valve in the half open position, flush and remove the possible risk substances in the valve body. 　　
2. Close the butterfly valve, remove the connecting bolts and nuts on the flanges at both ends, and then completely remove the valve from the pipeline. 　　
3. Disassemble the drive equipment in sequence - actuator, joint bracket, lock washer, valve rod nut, butterfly spring piece, wear plate, valve rod packing. 　　
4. Remove the body cover connecting bolts and nuts, separate the valve cover from the valve body, and remove the valve cover gasket. 　　
5. Acknowledging that the ball of the pneumatic butterfly valve is in the "off" position, it can be taken out of the valve body and then the valve seat. 　　
6. Push the valve rod down from the middle hole of the valve body until it is completely taken out, and then take out the O-ring and the lower packing of the valve rod. Attention: Please operate carefully to prevent scratching the valve stem surface and the sealing part of the valve body stuffing box

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Now the pneumatic butterfly valve is more compact. When a device is too large, you will find that it will cause great problems both in purchase, transportation and installation. But if this item is very small. At this time, you don't need to worry about how you transport when you buy, or how complicated the project is when you install it. You will feel better when you use it.

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