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The Grigri works by pinching the rope when it is moving quickly (like in a fall), making it an assisted braking belay device.This function distinguishes it from traditional belay devices such as a Sticht plate or an ATC, whose braking mechanisms depend entirely on the user controlling the rope in a specific manner to increase or decrease friction.
In 1975, the Petzl corporation was born as Fernand Petzl established the first company headquarters in Crolles, France. “This was the beginning of Petzl manufacturing.”. [2] The initial workshop was approximately 7,200 square feet (670 m 2), and located at the base of Dent de Crolles “Tooth of Crolles” close to Grenoble. Two years after ...
Aquarium filters are critical components of both freshwater and marine aquaria. [1] [2] [3] Aquarium filters remove physical and soluble chemical waste products from aquaria, simplifying maintenance. Furthermore, aquarium filters are necessary to support life as aquaria are relatively small, closed volumes of water compared to the natural ...
A flashback arrestor or flash arrestor is a gas safety device most commonly used in oxy-fuel welding and cutting to stop the flame or reverse flow of gas back up into the equipment or supply line. It protects the user and equipment from damage or explosions.
[2]: 52 [6] A major development in arresting gear was the constant runout control valve, which controls the fluid flow from the engine cylinder to the accumulator and is designed to stop all aircraft with the same amount of runout regardless of mass and speed. The aircraft's weight is set by each arresting gear engine's operator.
Changes to the design including updates to the handle, the bobbins and the carabiner slot. This version also saw Petzl shift the intended use of the Stop to recreational only use. The 2019 version of the Stop is no longer certified for Industrial use and Petzl now sell products such as the Petzl Rig and Petzl I'D S [3] for Industrial use instead.
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