Is the pneumatic disc valve closed or leaking? Why?

1, pneumatic butterfly valve in the process of use, should always be kept clean, transmission thread must be lubricated regularly, found fault, should immediately stop using, find out the reason to clear the fault.

2, packing gland bolts should be tightened evenly, should not be pressed into a bent state, so as not to impact the valve stem movement or cause leakage.

3. When installing, the valve can be directly installed on the pipeline according to the connection mode. In general, it can be installed anywhere in the pipeline, but it needs to be easy to operate and maintain. Note that the medium flow direction of the stop valve should be upward under the longitudinal disc, and the lifting check valve can only be installed horizontally.

4. When the pneumatic butterfly valve is in use, it can only be fully opened or closed, and it is not allowed to adjust the flow rate to avoid erosion and accelerated wear of the sealing surface. There are reverse sealing devices in the gate valve and the upper threaded globe valve. When the handwheel is rotated to the highest position and tightened, the medium can be prevented from leaking out of the packing.

5. When opening and closing the handwheel of pneumatic butterfly valve, please do not use lever or other tools to avoid damaging the valve. Turn the handwheel clockwise to close, and vice versa.

6. Before installation, carefully check whether the pressure and diameter of the valve target meet the use requirements, eliminate the defects caused by transportation, and eliminate the dirt of the valve parts.

7. Valves stored for a long time should be inspected regularly, and the exposed machined surface should be kept clean and free of dirt. When stored, the ball valve should be closed at both ends, and the pneumatic butterfly valve and channel should be closed at both ends. It should be stored neatly in a ventilated and dry place indoors, and it is forbidden to pile up or store it in the open air.