Deflagration arrestors are safety devices designed to prevent the propagation of deflagration, which is a rapid combustion process that occurs at subsonic speeds. These devices are commonly used in industries that handle flammable gases or dust, ensuring that any combustion event is contained and does not escalate into a more dangerous explosion. Typically installed in pipelines or equipment, deflagration arrestors work by using a combination of barriers and cooling mechanisms to dissipate heat and pressure. This helps to extinguish flames and protect surrounding areas, making them essential for maintaining safety in facilities dealing with hazardous materials, such as chemical plants or grain silos.