In order to reduce the degree of wear between parts, for valves, some grease can be added to prevent metal surface corrosion, such as commonly used mechanical oil or materials that can stay on the surface of pneumatic ball valves for a long time. This can form a protective film on the surface of ball valves, so that the equipment can reduce the degree of corrosion in use, which is also a good way of protection, However, this will also reduce the speed of the equipment during operation.

There are many kinds of pneumatic butterfly valves. There are pneumatic rubber sealed butterfly valves suitable for normal temperature conditions, pneumatic metal sealed triple preference butterfly valves suitable for medium temperature and high temperature conditions, corrosion-resistant pneumatic fluorine lined butterfly valves, pneumatic rubber lined butterfly valves, pneumatic plastic butterfly valves, pneumatic sanitary butterfly valves commonly used in food and pharmaceutical industries, and pneumatic vacuum butterfly valves for vacuum applications. The medium is air Under the working condition of flue gas, pneumatic ventilation butterfly valve and pneumatic flue gas butterfly valve can be selected, and pneumatic powder butterfly valve is applicable to powder system, such as cement, flour and other materials.