Quad Pawl Technology for Manual Chain and Lever Hoists

"Safe just became safer."

Quad Pawl (QP) Technology is a patented safety innovation engineered for manual chain hoists and lever hoists. Developed to enhance safety, durability, and operational performance, it introduces a step change in the reliability of manual lifting equipment used in demanding environments—onshore, offshore, and subsea.

Unlike conventional hoists that use twin pawl mechanisms, QP hoists incorporate four independent pawls, designed to engage sequentially with the ratchet gear. This delivers increased resilience to failure, finer load control, and a higher level of fail-safe operation.

How QP Technology
works in
Manual Hoists

In a manual hoist, pawls are small but critical components that engage with a ratchet gear to control the load. If a pawl fails to engage, the load can slip - posing serious safety risks.

Quad Pawl Technology addresses this by:

  • Using two sets of dual pawls mounted on the pawl stand, doubling the engagement points from two to four.

  • Ensuring at least two pawls are always engaged with the ratchet gear at any time, even if springs or individual pawls fail.

  • Operating in an offset configuration, which reduces the distance between engagement points - enabling smoother, finer adjustment during lifting or lowering.

Additionally, the pawl springs are enclosed within the brake chamber, protecting them from dirt, moisture, and corrosion, thereby increasing reliability in harsh or subsea environments.

QP Technology – Key Benefits for
Manual Hoist Applications

  • Enhanced Safety
    Built-in failure redundancy ensures hoist functionality even with multiple pawl or spring failures. Critical for safety intensive lifting tasks in offshore, construction, or confined space environments.

  • Precision Load Control
    Finer movements between pawls allow more accurate positioning of loads, crucial for rigging components like motors, valves, flanges, and pipe sections.

  • Subsea Proven
    QP lever and chain hoists, such as the SS-L5 QP and SS-C4 QP, are certified for multi-immersion use, eliminating the need for disposable single-immersion hoists.

  • Lightweight and Durable
    Designed with high-performance materials for lower weight and improved handling without compromising load rating or safety. Lower physical strain for riggers and logistics crews handling the hoists on deck or in confined areas.

  • Reduced Project Costs
    Reusability and durability result in cost savings per mobilisation by reducing replacement frequency and extending service life.

  • Sustainable Lifting Solution
    Fewer hoists discarded after one use = lower environmental impact and improved operational sustainability.

Certified and Trusted

Quad Pawl-equipped hoists are available in SS-L5 QP Lever Hoists, WH C4 QP,
SS-C4 QP, and SS-C4 QP Ultra Low Headroom Chain Hoists as well as
SS-C4 QP ROV Chain Hoists for subsea remote operation.

These hoists meet or exceed global lifting standards:

 Chain Hoists Lever Hoists
 BS EN13157: 2004 + AI:2009 BS EN13157: 2004 + AI:2009
 ASME B30.16-2014 ASME B30.21-2014
 AS1418.2-1997 AS1418.2-1997
 SANS 1594: 2007 SANS 1636: 2007
 NORSOK R-002: 2017 NORSOK R-002: 2017

 

A New Benchmark for Manual Hoist Safety

Lifting operations are among the most safety-critical activities in heavy industry. The Quad Pawl system represents a major step forward in protecting personnel, equipment, and payloads by delivering the highest level of fail-safe assurance available in manual hoisting equipment.