Válvulas de mariposa LKB
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
Catálogo de productos
Cómo funciona
La válvula de mariposa LKB de Alfa Laval funciona mediante un actuador neumático desde una ubicación remota o manualmente mediante una manija. El actuador viene en tres versiones estándar: normalmente cerrado (NC), normalmente abierto (NO) y aire/aire activado (A/A).
Para la operación neumática, un actuador convierte el movimiento axial del pistón en una rotación de 90° del eje. El par del actuador aumenta a medida que el disco de la válvula entra en contacto con el anillo de sello de la válvula de mariposa para asegurar el cierre correcto del asiento de la válvula.
Para la operación manual, una manija bloquea mecánicamente la válvula en posición abierta o cerrada. Hay manijas disponibles de dos posiciones, cuatro posiciones, regulación de 90° y posiciones múltiples. Las válvulas de mariposa manuales también se pueden montar con unidades de indicación para obtener información sobre la posición de la válvula (abierta/cerrada).