The LH-ALF is a one-way locking Pulley, designed for use in material handling applications only. The one-way brake will engage to arrest and hold the load should the user let go of the control rope, but there is no restriction to hauling speed. The LH-ALF is fitted with a load becket and should be used with a single pulley, in order to achieve a 2:1 Mechanical Advantage.
The LH-ALF has been designed for material handling (not recommended for use with people). The LH-ALF has brake pawls on one side only which means that there is no restriction on hauling speed/movement (on the normal two-way locking R-ALF device, unintentional locking can occur when hauling too quickly).
The one-way locking LH-ALF is therefore ideal in a setting where a user needs to haul quickly, such as when unloading materials from a supply vessel at an offshore wind turbine.
The LH-ALF can be used in a 2:1 hauling system (SWL 250kg) and is available as kit:
PR433 LH-ALF 
RP063 Medium Aluminium Prussik Pulley 
KH400 Atlas Scaffold Karabiner (Anchor Connector) 
KH411 Aluminium Oval Karabiner (Supersafe) 
The above kit is supplied in a carry bag, with sufficient rope to achieve a 30m (96ft) Height of Lift as standard. Other Heights of Lift and bespoke kits are available- please contact us for further information.