Pneumatic butterfly valve how to maintain
pneumatic butterfly valveMaintenance:
1, butterfly valve in the use of the process, should always keep clean, the transmission thread is necessary to time smooth, found that the problem, should immediately stop using, find out the cause of the fault.
2. The bolts of the packing gland should be tightened evenly and should not be pressed into a crooked condition to avoid bruising and preventing the valve stem from moving or leaking.
3. When the equipment is installed, the valve can be directly installed on the pipeline according to the connection method. Under normal circumstances, the equipment can be installed in any direction of the pipeline, but it is necessary to facilitate the operation of maintenance. Pay attention to the medium flow direction of the stop valve, which should flow upward under the longitudinal valve flap. The lifting check valve can only level the equipment.
4, butterfly valve use, only for fully open or fully closed, not allowed to do conditioning flow, so as to avoid the sealing surface erosion, accelerate wear. The gate valve and the upper thread stop valve are equipped with reverse sealing equipment, and the handwheel is screwed to the upper position to prevent the medium from leaking from the packing.
5, butterfly valve open, close the application of hand wheel, do not use the lever or other tools, so as not to damage the valve. Clockwise rotation of the handwheel is closed, otherwise it is open.
6. Before the equipment, it is necessary to carefully check the pressure of the valve mark, whether the diameter meets the application requirements, eliminate the shortcomings formed during the transportation process, and eliminate the dust and dirt of the valve parts.
7, long-term storage of the valve, should be regular inspection, the exposed processing appearance must be kept clean, remove dust, storage ball valve should be blocked at both ends and in the open state, butterfly valve, the channel should be blocked at both ends and in a closed state, neatly stored in indoor ventilated boring place, prohibit stacking or open storage.
Pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve. Butterfly valve is a circular butterfly plate rotating with the valve stem to open and close, in order to achieve the enabling action of pneumatic valves, mainly to do the use of cut-off valves, can also be planned to have the function of conditioning or section valves and conditioning, butterfly valves are now used more and more in low-pressure large and medium-sized diameter pipelines.