Our flame arresters comply with ISO 16852 standards, as set out in the ATEX Directive 94/9 / CE. There are different types of flame arresters depending on the gas and the type of explosion. To ensure the integrity of the equipment to be protected, it is crucial to correctly select the type of flame arrester. For your correct choice you must know:
The gas group of the mixture IIA, IIB or IIC
The origin of the possible ignition point and the distance to the flame arrester
Direction of the advance or the recoil of the flame
IN LINE DEFLAGRATION FLAME ARRESTERS
The flame arresters capable of extinguishing a flame front confined in a gallery, which moves at a lower speed than sound, belong to this category. Therefore, this equipment must withstand significant mechanical and thermal energy. The maximum distance allowed between the ignition point and the extinguisher is 50 times the diameter of the pipe, and 30 times for the IIC (hydrogen) groups.
IN LINE DETONATION FLAME ARRESTERS
When a deflagration is propagated through a pipe, its pressure and temperature increase until it reaches the autoignition temperature, at which time in addition to the advance of the flame a detonation occurs. They belong to this category the flame arresters capable of extinguishing a flame front, confined in a gallery, which moves at a speed greater than that of sound, thus having the character of a detonation. The mechanical and thermal energies in this case are more critical, and must withstand high solicitations.
IN LINE ECCENTRIC FLAME ARRESTERS
In-line eccentric flame arresters are horizontally installed, designed to prevent condensation on flammable gases that can condense at the lowest points of the installation. They can be both explosionproof and antidetonating.