Special flange version of the LKB butterfly valve that makes it easy to remove the valve body without needing to dismantle piping set-ups. This in turn makes it easy to undertake repair, service and replacement with a bare minimum of disruption.
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. Alfa Laval LKB-F for flange connections to easily remove the valve body without dismantling piping setups. For both ISO and DIN.
LKB-F 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-F 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.
- Easy maintenance
- Robust design
- Modular with LKB valves
How it works
The valve consists of two valve body halves, valve disc, bushes for the stem and seal ring. The valve is assembled by means of screws and nuts. The handle is fitted onto the valve by means of a cap/block system and screw.
The standard Alfa Laval LKB-F butterfly valve range is designed either for automatic or manual operation.
Manual or automatic operation for LKB and LKB-F
The automated LKB butterfly valve is controlled from remote location by means of compressed air using a pneumatic actuator.
The actuator controls the axial movement of a piston, which rotates the shaft 90°. The torque exerted by the actuator increases when the valve disc contacts the valve sealing ring, to ensure effective closing. The actuator is available in three standard versions: normally closed (NC), normally open (NO) and air/air activated (A/A). Manual handle is available.
Part of a broad valve range
- Alfa Laval LKB Butterfly Valve
- Alfa Laval LKB UltraPure
- Alfa Laval LKB-F
- Alfa Laval Unique Control LKB
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
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.
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.
Download the product models in Neutral or Native CAD file formats. It is also possible to download 3D PDF files.
Visit the animations site and take a look inside a product to see and understand how it works.