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As of 2001, Petzl had approximately 600 products. [4] Later in 2002, the QUARK ERGO was developed and designed to be the first leashless, angled ice axe. [2] In 2004, Petzl's first fall arrest device for work at height was developed. In 2006, the Petzl corporation introduced new general director Pascal Bonino, and the Petzl Foundation was also ...
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.
A gas non-return valve (NV), which: prevents dangerous gas mixtures. ensures the gas only flows in the intended direction. and a flame arrestor (FA), which: cools the flame to below the ignition temperature of the gas or gas mixture. prevents flashback. In addition to these two basic safety functions a flashback arrestor can also have a:
Safety net Safety line. Fall arrest is the form of fall protection which involves the safe stopping of a person already falling. It is one of several forms of fall protection, forms which also include fall guarding (general protection that prevents persons from entering a fall hazard area e.g., guard rails) and fall restraint (personal protection which prevents persons who are in a fall hazard ...
Positioning a manual valve to neutral exhausts the air pilot pressure, closing the two-way valves, and trapping oil on both sides of the cylinder to lock it in position. [ clarification needed ] Standby and emergency systems: compressor systems requiring standby or purge gases capability are pressure controlled by the shuttle valve.
Centrifugal type spark arresters employ stationary vanes, baffles, or other devices to trap large particles by centrifugal force. These spark arresters are typically found on heavy agricultural and construction equipment (tractors, combines, bulldozers, etc.), but some have been developed for motorcycles and other all-terrain vehicles.
A level control valve or altitude control valve is a type of valve that automatically responds to changes in the height of a liquid in some storage system. A common example is the set of ballcocks in a flush toilet , where each stage of the flush cycle is actuated by the emptying or filling of the tank.
The first patented detonation flame arrester was developed by Nicholas Roussakis et al., U.S. patent 4,909,730 and was issued on March 20, 1990. Its need was initially driven by new environmental legislation, namely the Clean Air Act of the USA. Regular flame arresters had been around for years, but they had very limited applications.