LKB Butterfly Valve

Butterfly valves are relatively straightforward on/off routing valves with a substantial opening area and low flow resistance. Where hygiene standards are important, these are ideal for use with low and medium-viscosity liquids.

Full range, full spectrum

The Alfa Laval LKB butterfly valve range consists of modular units designed to meet the full spectrum of requirements at working pressures from full vacuum to 10 bar. All valves are FDA-compliant, designed for use in a wide range of stainless steel pipe systems, and can be built to comply with virtually any installation standard.

Reliable performance

LKB butterfly valves come with several features that ensure reliability 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 lockable handle for manual operation of 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; special double-spring design enables 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.

Product Benefits

Full range, full spectrum
Reliability performance
Manual or automated control

How it works

The Alfa Laval LKB Butterfly Valve operates either by means of a pneumatic actuator from a remote location or manually by means of a handle. The actuator comes in three standard versions: normally closed (NC), normally open (NO), and air/air activated (A/A).

For pneumatic operation, an actuator converts axial piston motion into a 90° rotation of the shaft. The actuator torque increases as the valve disc comes into contact with the butterfly valve seal ring to secure proper closing of the valve seat.

For manual operation, a handle mechanically locks the valve in open or closed position. Two-position, four-position, regulating 90°-position, and multi-position handles are available. Manual butterfly valves can also be mounted with indication units for feedback on the valve position (open/closed).

Save water with ThinkTop

Do something good for the environment and save up to 95% in CIP liquid when cleaning your valves. Innovations like ThinkTop sensing and control units make more efficient use of resources while safeguarding process hygiene. Add ThinkTop to your valves to optimize your processes.

Save water with ThinkTop

Part of a broad valve range

Alfa Laval offers a comprehensive range of valves intended for hygienic applications in the dairy, food, beverage,home care, personal care, biotechnology and pharmaceuticals.

For a broader valve range, explorer the different product categories: ball valves, control/check valves, diaphragm valves, double seal valves, double seat valves, regulating valves, safety valves, sample valves, shutter valves and single seat valves.

Ten top tips - Valves

Here are some tips and service videos to show how you keep your hygienic valves in tip top condition

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Food Logic

Alfa Laval's hygienic equipment combines high performance with gentle handling to preserve sensitive ingredients. Keeping up with the food industry trends and addressing four key challenges; supplying food products to consumers at a competitive price, getting the most from raw materials, reducing waste and emissions, and delivering safe and hygienic food products.

Product catalogue

Alfa Laval's hygienic equipment product catalogue "Close at hand" includes product leaflets, performance curves, links to animations, brochures and price lists for ordering purposes.

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