ISO Flange High Vacuum Butterfly Valves: Overview & Technical Parameters

The ISO Flange High Vacuum Butterfly Valve is used to connect or cut off the gas flow in vacuum pipelines. The valve plate of the valve adopts a clamping structure to clamp the sealing ring of the valve plate, and has the functions of fine-tuning the main seal and locking the valve opening and closing. The main applicable working media are air and non-corrosive gases.

Technical Parameters of ISO Flange High Vacuum Butterfly Valve

• Nominal Diameter: DN25-DN400

• Applicable Range (Pa): 10⁵~1.3×10⁻⁶

• Valve Leak Rate (Pa·L/S): ≤1.3×10⁻⁷

• Applicable Temperature: -25℃~80℃ (Nitrile Rubber, NBR); -30℃~150℃ (Fluororubber, FKM)

• Valve Body Material: Stainless Steel

• Installation Position: Arbitrary