What is inline flame arrestor?
Elmac’s series of In-Line Deflagration Flame Arresters are designed to prevent the propagation of flames in piping systems. By locating the arrester in close proximity to the potential source of ignition, any flame or explosion is confined to the immediate area.
What is the difference between a flame arrestor and a detonation arrestor?
Vent-Line/In-Line flame arresters may be installed at some maximum distance (specified by the manufacturer) from the end of a section of open vent piping. Detonation arresters are designed so that they may be installed anywhere in a flammable vapors piping system.
Where do you put a flame arrestor?
The flame arrestor is typically installed about 30 pipe diameters or 5 m upstream of the vent tip. Velocity flame arrestors must not be too far from the ignition source otherwise the flame that is traveling backward may accelerate such that its velocity is sufficient to pass through the arrestor.
What is the function of flame arrestor?
A flame arrester (also spelled arrestor), deflagration arrester, or flame trap is a device that stops fuel combustion by extinguishing the flame.
Why do you need a flame arrestor?
Flame arresters are installed on such equipment to prevent potential hazards associated with flammable and explosive materials. A flame arrester works by forcing a flame front through very narrow channels. Gas travels through the device, but the passages are so narrow that the flame can no longer be maintained.
Do I need a flame arrestor?
If the flame could occur from either direction then a bi-directional flame arrester is required. In-line flame arresters can be either deflagration or detonation arresters depending on the conditions under which they are to be used.
What is the difference between deflagration and detonation?
A deflagration occurs when a flame front propagates by transferring heat and mass to the unburned air–vapor mixture ahead of the front. A detonation occurs when the flame velocity reaches supersonic speeds above 600 m/s and generally in the 2000–2500 m/s range.
How does a detonation arrestor work?
How Detonation Flame Arresters Work. Flame arresters are passive devices with no moving parts. They prevent the propagation of flame from the exposed side of the unit to the protected side by the use of metal matrix creating a tortuous path called a flame cell or element.
What is a deflagrating explosive?
3.2 Deflagration and Detonation. Explosives are those substances that have their own supply of oxygen in their molecules. When they are initiated, they may either burn violently (deflagrate) or explode disastrously generating shock waves (detonate).
How does a backfire flame arrestor work?
An approved backfire flame arrestor on each carburetor or… An attachment to each carburetor or to the engine air intake that disperses flames caused by engine backfire to the atmosphere outside the vessel and does not endanger the vessel’s occupants.
Are flame arrestors directional?
These arresters are bi-directional, capable of stopping a flame or detonation approaching from either direction in long or complex piping runs such as those encountered in vapor recovery or manifolded tank systems.
Which is true of a carburetor backfire flame arrestor?
Because boat engines may backfire, all powerboats (except outboards) that are fueled with gasoline must have an approved backfire flame arrestor on each carburetor. Backfire flame arrestors are designed to prevent the ignition of gasoline vapors in case the engine backfires.