MPD™ Pulley – Auxiliary – Descent Control

Go from lowering to raising without changing hardware.

  • A variable-friction descent control device for rescue systems and rappels.
  • Incorporates high efficiency pulley with an integral rope-locking mechanism (ratchet) for a haul system
  • The built-in becket allows cleaner rigging and more efficient pulley systems
  • The MPD allows main line and belay line rigging to be mirror images of one another
  • One device functions as both a lowering brake and as a ratcheting pulley for raising
  • It’s ideal for confined space operations because it converts rapidly to a retrieval line
  • Meets BCCTR Rescue Belay Competency Criteria**
  • More than nine years of research and development went into our patented Multi-Purpose Device (MPD), which features major innovations in advanced technical hardware for rope rescue professionals.

The MPD’s high-efficiency pulley, with an integral rope-grab mechanism, means it can be used as a lowering device on the main line and belay line systems and be quickly changed over to a raising system without switching out or replacing hardware. The combination of essential features into a single device simplifies on-scene rigging, expediting the rescue. The revolutionary MPD increases user safety with:

  • Reduced Weight
  • Fewer Components
  • Faster Rigging
  • Quick Changeovers
  • Simplified Training
  • Lower Risk

The 13mm version is designed for use with 12.5mm-13mm rope.  Rope used for certification rounded up to 13mm per NFPA 1983.  11mm model is designed for and tested with 11mm rope.

The MPD comes with a padded Cordura nylon storage bag and User’s Manual.

** The British Columbia Council of Technical Rescue (BCCTR) Belay Competency Drop Test specifies a 1-meter drop onto 3 meters of kernmantle rescue rope with less than 1 meter of additional travel and less than 15 kN peak force.  For a general use rated device, a 280-kg load and a 12.7-mm rope are generally used.  For a light use device, a 200-kg load and an 11.1-mm rope are used.