Alfa Laval LKB Butterfly Valve

Product Benefits

  • Max. product pressure: 1000 kPa (10 bar)
  • Min. product pressure:  Full vacuum
  • Temperature range: -10°C to + 140°C (EPDM)
  • However max. 95°C when operating the valve (All seals)
  • Product wetted steel parts:  1.4307 (304L) or 1.4404 (316L)
  • Disc:  1.4301 (304) or 1.4404 (316L)
  • Other steel parts:  1.4301 (304)
  • Rubber grades: Q, EPDM, FPM, HNBR1) or PFA1)
  • Bushes for valve disc:  PVDF
  • Finish:  Semi-bright
  • LKB-F (DIN) with HNBR and LKB-F (DIN & ISO) with PFA are supplied with an EPDM flange seal.

Technical Data

LKB butterfly valves come with several features that ensure reliable performance. A highly polished stainless steel disc with surface smoothness down to Ra<0.8 µm and bearing bushes clipped onto the disc stems prevent metal-to-metal abrasion and ensure smoother disc movement.

The stem diameter provides particularly low flow resistance, ensuring gentle product treatment for low and medium-viscosity products. In addition, Alfa Laval seal technology provides greater thermal stability, better chemical resistance and improved tensile strength.

Manual or automated control

Alfa Laval LKB butterfly valves can be complemented with a lockable handle for manual operation with an actuator and in combination with either a valve indication unit or Alfa Laval ThinkTop valve sensing and control units.

For manual operation: Alfa Laval provides a complete range of handles, including a multi-position lockable handle.

For automated operation: A selection of different actuators is available; a special double-spring design enables the application of maximum torque to the valve disc at breakaway and seal positions. This makes it easy to integrate these valve units into larger systems operated from a central point, and/or to operate them automatically for maximum efficiency.


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