ABS System Components

The ABS® TwinBag system is a technically advanced product that consists of several components. Here you can familiarize yourself with the individual components and learn what functions they serve.

1. ABS TwinBags

Each of the two airbags has a volume of 85 liters when inflated. They are inflated simultaneously but have separate closure and suction valves. If one of the airbags is damaged, the other one will remain inflated for a sufficient length of time. The internal pressure is about 0.1 bar.

2. The Cartridge

The cartridges contain only non-hazardous, non-flammable gases found in the atmosphere. Internal pressure 300 bar (carbon cartridge 340 bar). The cartridge must only be pierced inside the puncture unit of the ABS-system. Handling the closure of the cartridge can cause an explosion. Serious risk of injury and death, even for bystanders! The cartridge is designed for temperatures of between -40 °C to +50 °C. Empty cartridges can only be refilled by ABS. Exchanges for a full cartridge can only be made with an ABS dealer. Avoid impacts, such as dropping the cartridge. Depending on the model, the cartridges comply with the following guidelines:

  • Steel cartridge Europe: EC directives
  • Steel cartridge North America: DOC and TC certified
  • Carbon cartridge: EC directives

3. The Piercing unit

The piercing unit, into which the cartridge is screwed, is housed in a compartment at the top of the backpack. The piercing unit consists of a needle that pierces the cartridge when the system is activated. Make absolutely sure that it stays clean and that no objects can penetrate it. Therefore, always close the cover. A screwed-in cartridge can be unscrewed from the puncture unit at any time. The cartridge will only be opened when the attached handle is pulled. We generally recommend that you always keep the cartridge screwed in.

4. The TwinBag compartments

The TwinBags are packed in two airbag compartments on each side of the backpack. They are protected during normal use of the backpack. If the ABS system is activated, the two Velcro fasteners are opened by the pressure of the inflating TwinBags and the airbags pop out of the sides.

5. The Fill and outlet valve

Fill and outlet valves are located on both airbags. They suck the ambient air into the airbag automatically when the ABS system is activated. The outlet valve is located in the center of the fill and outlet unit under a red plastic cap. Air can be let out of the airbag by pressing the outlet valve. The net cover over the fill and outlet unit prevents snow from entering the airbag while it is being inflated.

6. Handle plate with protective flap and coupler

The handle plate is normally attached to the left shoulder strap of the backpack. The coupler, to which the activation handle is attached, is located here. The coupler is covered by the protective flap to keep it clean and protect it against snow and ice. The Velcro fastener secures the activation handle when there is no danger of an avalanche. For left-handed users, a handle plate is also available on the right shoulder strap.

7. The activation handle

The activation handle includes a pressurized capsule. The capsule is released by attaching the handle to the coupler on the strap of the backpack and by pulling the activation handle. The explosion pressure travels through the pressure tube to the piercing unit. The full cartridge is pierced at this point by the needle and the cartridge medium travels through the pressure tubes to the two airbags, where it inflates the airbags with the help of the fill and outlet unit. Filling time about 2-3 seconds. The pressurized capsule in the activation handle can only be released once. This is why both the activation handle and cartridge must be returned and replaced by a dealer.

8. Height adjustment

The activation handle must be ideally positioned for easy accessibility. The height of the mounting on the activation handle can therefore be adjusted. The correct position of the activation handle is between the chest and shoulder. In order to adjust the height, open and unfold the Velcro fastener, attach the handle plate to the appropriate plastic grommet and attach the Velcro fastener.

9. Lep strap, shoulder strap - The ABS carrying system

The entire carrying system of the backpack is extremely important, because the ABS system will only be of any use in an emergency if it is kept on your body. The carrying system has been tested and meets the TÜV requirements for extreme operational demands. The carrying system consists of:

  • the shoulder strap
  • the chest strap
  • the hip strap
  • and a leg strap

It is very important that all of these straps be properly fastened and adapted to your body size.

10. Hip strap with handle pocket

The hip strap is equipped with a safety fastener. For maximum support and perfect fit of the hip strap. The hip strap includes a small zip compartment in which the activation handle can be stored when it is not attached.