The working medium of the low-temperature ball valve is mostly flammable, explosive, and highly permeable substances. The minimum operating temperature can reach -269 ° C, and the maximum use pressure is 10MPa. The working conditions are relatively harsh. Therefore, the design, manufacturing, and inspection of the low temperature valve are very different from the normal temperature valve. Low-temperature valve refers to a valve that can be used under low-temperature conditions. Generally, valve valves with a working temperature below -40 ° C is called a low-temperature valve. Low -temperature ball valve is one of the indispensable important equipment for industrial industries such as petrochemical, air separation, and natural gas.
Ballow valve: The valve is driven by the valve stem and the valve of the rotation movement is driven by the valve stem. Ball valve: The fluid resistance is small, and its resistance coefficient is equal to the pipe segment of the same length. Simple structure, small size, light weight. The cover material of the ball valve is widely used in the cover materials of the ball valve, and it has been widely used in vacuum systems. It is easy to operate and quickly and close. From full opening to full level, it only needs to rotate 90 ° to facilitate long -distance control.
Features of ball valves: wear resistance; because the valve core of the hard sealing ball valve is alloy steel spraying welding, and the sealing ring is alloy steel pile welding, so the hard sealing ball valve will not cause too much wear when switching. The sealing performance is good; because the sealing of the hard sealing valve is artificial grinding, it can not be used until the valve core and the sealing ring are completely matched. So his sealing performance is reliable. The switch is light; because the bottom of the sealing ring of the hard sealing ball valve is tightly hugged with the sealing ring and the valve core, the switch is very light when the external force exceeds the pre -tightening force of the spring