The ALF is a uniquely designed locking pulley system combining an inertia reel/speed sensitive locking system into a grooved pulley wheel. This provides a simple mechanical method of protecting multiple workers in height safety and rescue scenarios or a climb assist system for workers on towers, masts, wind turbines and construction. The unit can be rigged in a continuous loop system, using a large single prussik pulley.
The R-ALF Pulley is the latest innovation in Rescue, Confined Space working and Work Suspension Systems. The R-ALF Pulley has an over-speed brake built in so that the Pulley will lock on and hold when a fall occurs. The load rated Becket Eye on the R-ALF means that it can be used in combination with Prussik Pulleys to create a 3:1 or 5:1 Mechanical Advantage System.
The unique design of the R-ALF (design patent applied for), means that an internal brake is not required and therefore it is capable of several thousand cycles and many arrests (minimum 12 monthly service intervals apply).
Uses AS/NZS 4142.3 or EN1891 compliant 11 mm static rope.
H x W x D (mm)
|ALF||VISC RP430 ALF||1205 g||210 x 139 x 45||140 kg|
|RALF with becket||VISC RP431 R-ALF||1243 g||240 x 139 x 45||250 kg||CE 0120; ANSI Z359:4:2007|