The imported electric cryogenic butterfly valve is a kind of butterfly valve that can be used under low temperature working conditions, and the butterfly valve with a working temperature lower than -40 is usually called a cryogenic butterfly valve. It is mainly used in chemical plants such as ethylene and liquefied natural gas, and the output of liquid low-temperature media such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, liquefied petroleum products, etc., is not only flammable and explosive, but also gasified when the temperature rises, and the volume expands hundreds of times when gasified.
The imported electric cryogenic butterfly valve has the characteristics of simple structure, compact and lightweight, flexible and convenient operation. The disc plate is mounted on the top of the shaft and is fixed with a cylindrical pin;The disc-shaped sealing rings are fixed on the walls on both sides of the disc plate;The bolts are fastened to the disc plate by means of nuts and washers. The entire spherical and disc-shaped sealing surface is machined into an oblique conical surface and chamfered at the joint. The transmission mechanism is composed of gears and bearings, which are fixed on the workbench on the rotating shaft after self-alignment. The rotating device is composed of a worm gear reducer driven by an electric motor and a pulley.
The parameters of the imported electric cryogenic butterfly valve include:
DN:DN15 DN500(mm).
Nominal pressure: PN16 PN25
Design temperature: -196 550
Connection: clamp, flange.
Applicable media: LNG, LO2, LN2, LAR
Body Material: ASTM A351 CF8 CF3 CF8M CF3M
Seat Material: ASTM A182 F304 F316 F316L Combo RTFE or graphite.
Shaft Material: ASTM A276 F304 F316 F316L
The characteristics of imported electric cryogenic butterfly valves are mainly as follows:
Good low-temperature performance: with special materials and design structure, it can work normally at extremely low temperatures, ensuring the normal operation of the system.
Good corrosion resistance: It is made of materials with high corrosion resistance, which can operate stably for a long time in the working environment of corrosive media.
Good sealing performance: The two-way sealing structure is adopted, which has good sealing performance and can effectively prevent the leakage of the medium.
Easy to operate: The operation is light and simple, and can be operated manually or equipped with electric and pneumatic actuators for automatic control.
Small size, light weight, reliable performance, simple matching, large flow capacity, especially suitable for the medium is cleaner liquid and gas.