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William Ball Lock
The William carabiner by Petzl is a large, pear-shaped locking carabiner for belay stations and belaying with a Munter hitch An indispensable carabiner for all climbers.
The large capacity WILLIAM carabiner has a practical pear shape for attaching multiple items easily. Its shape and Keylock system make operating it easy, even with gloves.
Great functionality due to its capacity and its size:
- carabiner can be used to hold large amounts of gear,
- optimal shape for belaying with the Munter hitch,
Shape:
- shape suited to handling with gloves,
- asymmetrical pear shape to make opening and operating the locking system easy,
- Keylock system to avoid any involuntary snagging of the carabiner.
Available in three different locking systems to suit any situation
Technical Specifications
Material(s): aluminium.
Certification(s): CE EN 362, CE EN 12275
Major axis strength: 27kN
Open gate strength: 8kN
Minor axis strength: 8kN
Gate opening: 27mm
How do I choose the right carabiner?
Locking system
Carabiner locking systems can be manual or automatic. With manual systems (SCREW-LOCK), the sleeve must be screwed manually onto the gate to lock it.
It is recommended for carabiners that are only operated occasionally, like the main carabiner in a belaying station. Manual systems are also recommended for use in dirty environments where dust and dirt might interfere with the correct functioning of automatic locking mechanisms.
With automatic locking systems (BALL-LOCK, TRIACT-LOCK, TWIST-LOCK), the gate unlocks automatically. These systems are recommended for carabiners that are operated frequently, like carabiners linking a belaying or rappel system to a harness.
Ball-Lock System (BL) - Automatic locking system and triple action gate
- Shape
Advantages:
• Rapid auto-locking.
• Visual locking indicator.
Disadvantages:
• Sleeve must be unlocked every time carabiner is opened.
• Sleeve operation is fiddly especially with gloves, requires practice. A less "ambidextrous" system than others.
• Two hands are needed to insert a device into the carabiner.
- Safety
Advantages:
• Security of triple action locking (excluding rubbing and external pressure).
• Rapid auto-locking.
Risks:
• Chance of not locking properly when the carabiner closes (e.g. sling caught between the nose and the gate). The user must verify that the carabiner is properly closed and locked, even when using an auto-locking system.
Carabiner shape
The different shape of carabiners and making the right choice of carabiner shape will increase the ease of handling and safety for specific uses.
Carabiner shape has an impact on:
• major axis strength,
• load distribution,
• gate opening size, and capacity,
• strength in certain positions,
• ease of handling.
Another less obvious effect is the balance of the carabiner itself. For example, pear-shaped carabiners rotate more readily, which can result in poor positioning. D-shaped carabiners tend to stay in place better.
Petzl carabiners are available in three different main shapes, each designed for a specific use:
Asymmetrical D shape:
For attaching belaying and rappel systems, or for use at the end of a lanyard.
Pear shape:
For anchoring several ropes, slings or other devices, and to make rotating the knot easier when belaying with a Munter hitch.
Symmetrical oval shape:
For attaching belaying systems, pulleys, or gear. Prevents jerking when loading.
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