Does Zhejiang butterfly valve need oil? The company has obtained some authorized range of three eccentric metal seal butterfly valves that have been involved in manufacturing for several years, but because of the popularity of its Boffin and other butterfly valves, there is no need to continue to operate in this range of valves.
、 Parameters that should be paid attention to when purchasing electric butterfly valves Many people know that electric butterfly valves are one of the electric valves and electric control valves, which are widely used in the temperature and pressure control of automatic production pipelines. The main connection methods are: flange type and wafer type. They are important execution units in the field of industrial automation control. In order to better understand electric butterfly valves, Now let's talk about the five characteristics of electric butterfly valve: 1. The electric butterfly valve has simple structure, small volume, light weight, low material consumption, small installation size, fast opening and closing, 90 ° reciprocating rotation, small driving torque, etc. It is used to cut off, connect and regulate the medium in the pipeline, and has good fluid control characteristics and closing sealing performance. Electric butterfly valve 2. The electric butterfly valve can transport mud, with the least liquid accumulated at the pipe mouth. Good sealing can be achieved under low pressure. Good adjustment performance. 3. The streamline design of the butterfly plate of the electric butterfly valve makes the fluid resistance loss small, which can be said to be an energy-saving product. 4. The valve stem of electric butterfly valve is of through stem structure, which has good comprehensive mechanical properties, corrosion resistance and scratch resistance after quenching and tempering treatment. When the electric butterfly valve is opened and closed, the valve stem only rotates rather than moves up and down. The packing of the valve stem is not easy to be damaged and the sealing is reliable. It is fixed with the taper pin of the butterfly plate, and the extended end is designed to prevent the valve rod from collapsing when the connection between the valve rod and the butterfly plate is accidentally broken. 5. The connection modes of electric butterfly valve include flange connection, wafer connection, butt welding connection and lug wafer connection. Drive forms include manual, worm gear drive, electric, pneumatic, hydraulic, electro-hydraulic linkage and other actuators, which can realize remote control and automatic operation.