End-of-line deflagration flame arresters are designed for unconfined flame propagation, also referred to as atmospheric explosion or unconfined deflagration. They simply bolt or screw onto the process or tank connection. These designs incorporate well-established but simple technology. Most use a single element of crimped wound metal ribbon that provides the Heat Transfer needed to quench the flame before it gets through the arrester element.
The main points of concern when selecting an arrester for end-of-line applications are as follows: