Introduction To LKB UltraPure

The Alfa Laval LKB UltraPure Butterfly Valve is either controlled remotely by means of an pneumatic actuator or manually by means of a handle. For pneumatic operation, an actuator converts axial piston motion into a 90celcious rotation of the shaft. The actuator torque increases as the valve disc comes into contact with the seal ring of the butterfly valve to secure proper closing of the valve seat. The actuator comes in three standard versions: normally closed (NC); normally open (NO); and, air/air activated (A/A). Two actuator sizes, 85 mm and 133 mm, cover all valve sizes and are available in two versions, LKLA and LKLA T (T for mounting of indication or control unit on the actuator). For manual operation, the handle mechanically locks the valve in open or closed position. Handles are available in two positions, four positions, regulating 90celcious position, and multi-position. The valve can be supplied either with welding connections or clamp connections and can be mounted with indication units for feedback on the valve position (open or closed).