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In order to meet the requirements of industrial applications such as high and low temperature, strong erosion, and long life, metal-sealed butterfly valves have been greatly developed in recent decades.
The structure of the stop valve is simpler than that of the gate valve, and it is more convenient to manufacture and maintain.the sealing surface is not easy to wear and scratch, and the sealing performance is good. There is no relative sliding between the valve clack and the valve body sealing sur
1. Clarify the purpose of the valve in the equipment or device, determine the valve's working conditions, applicable medium, working pressure, working temperature, etc. 2. Clarify the nominal diameter and connection method of the pipeline connected to the valve: flange, thread, welding, etc. 3
1. Pay attention to the storage environment of the valve. It should be stored in a dry and ventilated room, and both ends of the passage should be blocked.2. The valve should be inspected regularly, the dirt on it should be removed, and anti-rust oil should be
