KF Flange Manual High Vacuum Butterfly Valves: Overview, Technical Performance & Key Component Materials

The KF Flange Manual High Vacuum Butterfly Valve is used to connect or cut off the gas flow in vacuum pipelines. The valve plate of the valve body adopts a clamping structure to clamp the sealing ring of the valve plate, achieving a better sealing effect. In addition to being used in vacuum conditions, it can also be used in low-pressure conditions. The applicable media of the KF Flange Manual High Vacuum Butterfly Valve are pure air and non-corrosive gases.

Technical Performance

• Applicable Range: 10⁵～1.3×10⁻⁴Pa

• Valve Leak Rate: ≤1.3×10⁻⁴Pa·L/S

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

• Air Supply Pressure: 0.4～0.6MPa

• Installation Direction: Arbitrary

Key Component Materials

• Valve Body, Valve Bonnet, Valve Stem: Carbon Steel or Stainless Steel

• Sealing Elements: Nitrile Rubber, Fluororubber