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ISO KF

Caburn-MDC butterfly valves require only one-quarter turn rotation of the handle to go from fully open to the fully closed position. In the DN 16CF and DN 16KF flange series, a spring loaded ball bearing becomes seated in an indent providing a positive mechanical stop. All other size valves employ a roll pin stop method. These quick-acting butterfly valves feature an improved sealing action. The opening in the body of the valve has been machined at a slight angle to the plane of the flapper. The flapper is set to rotate slightly off-centre. On closure, this causes the sealing pressure to be applied more uniformly all around the 0-ring. A reliable, positive seal is made and the tendency of previous designs to roughen the surface of the 0 -ring and eject it from its groove is eliminated. Caburn-MDC butterfly valves are low outgassing. All internal surfaces are machined from solid stainless steel bar stock. The handle is made of aluminium. A small 0-ring on the stem prevents shaft leakage. The valves are offered with a choice of CF ultrahigh vacuum metal-seal flanges or ISO KF 0 -ring seal flanges.
Features
  • Quick open I quick close with positive locks
  • Positive Viton® 0-ring vacuum seal
  • Type 304 stainless steel valve body
  • High conductance
  • Choice of CF or KF Flange


CF



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Specifications
Material
 Flanges 304ss
 Knob Aluminum
 O-rings Viton® elastomer
Vacuum range 1.3x 10-8 m bar
Temperature Rating 150°C open/ 125°C closed
Weight and dimensions see table
For conversion tables click here

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