Protego | Inline Flame Arresters - Deflagration
- Flame Arresters (or ‘flame arrestors’) are designed to allow the flow of gases, liquids, etc. and to prevent flame transmission.
PROTEGO® Flame Arresters are composed of individual FLAMEFILTER® (flame arrester discs), spacers, and a casing. The FLAMEFILTER® is made of wound, corrugated metal strips. The principle of flame quenching in small gaps is applied in PROTEGO® end-of-line flame arresters and PROTEGO® in-line flame arresters.
When a mixture ignites in a gap between two walls, the flame spreads towards the non-combusted mixture. The expansion in volume of the combusted mixture pre-compresses the non-combusted mixture and accelerates the flame. By heat dissipation in the boundary layer “s”, transferring it to the large surface of the gap length compared to the gap width “D”, and by cooling down the product below its ignition temperature, the flame is extinguished.
The gap width and the gap length of the flame arrester disc determines its extinguishing ability. The narrower and longer the gap, the greater the extinguishing effectiveness. The wider and shorter the gap, the lower the pressure loss. Experiments can determine the optimum solution between the two conditions.
- Inline Flame Arresters - Deflagration
Model: FA-E
Features:
• state of the art design for bio-, sewage- and landfill gas applications
• eccentric design prevents condensate build up
• offers a wide range of applications
• special design for elevated operating pressures available
• modular design enables each individual FLAMEFILTER to be replaced
• easy to maintain and the FLAMEFILTER® can be quickly removed and installed
• cost-efficient spare parts
• eccentric design eases installation close to floors and walls
• provides protection against deflagrations and endurance burning for explosion group I - methane (acc. to EN ISO 16852 Expl.gr. IIA1)
• bidirectional operation as well as any direction of flow and installation position
• endurance burning proof under atmospheric conditions up to DN 200 / 8” and therefore the installation of temperature sensors is not required
• installation of temperature sensors is possible
The PROTEGO FA-E-I series of in-line deflagration flame arresters are designed with an eccentric housing to automatically drain condensate build up in the housing. The PROTEGO FA-E-I in-line fame arrester was specially developed for bio-, sewage- and landfill-gas applications. The application as an endurance burning proof in-line device under atmospheric conditions without extensive temperature monitoring is of advantage. Due to its eccentric design and in contrast to conventional concentric flame arresters the device can be installed in pipelines that run close to floors or walls. When installing the deflagration flame arrester make sure that the distance between potential ignition sources and the location of the installed device does not exceed the L/D ratio (pipe length/pipe diameter) for which the device was approved. According to EN 12874, the installation limits are L/Dmax 50 for deflagration flame arresters for explosion group I - methane (acc. to EN ISO 16852 Expl.gr. IIA1).
Model: FA/CN
Features:
• design available for elevated operating temperatures and pressures
• compact design with easy access cover
• easy maintenance without disassembling of the pipeline
• modular flame arrester unit enables individual FLAMEFILTER to be replaced and cleaned
• modular design reduces spare parts cost
• bidirectional flame transmission proof design
• provides protection against deflagrations for group IIA and IIB3 vapours (NEC group D and C)
• lowest pressure drop results in low operating and lifecycle costs
The PROTEGO FA-CN in-line deflagration flame arrester is a compact design utilising an easy access cover for easy maintainability. The PROTEGO flame arrester unit can be removed and cleaned within moments without having to disassemble the pipe. When installing the deflagration flame arrester, make sure that the distance between potential ignition sources and the location of the installed device, does not exceed the L/D ratio (pipe length/pipe diameter), for which the device was tested. According to EN 12874 this device is approved for an L/D ratio of 50.
Model: DA-G
* different application possibilities
* modular design
* cost efficient spare parts the individual FLAMEFILTER can be quickly removed and installed
* threaded connection for direct mounting into pipeline
* bidirectional flame transmission proof design protects against deflagrations for all explosion groups
* use of temperature sensors for G ½" and 2" is possible
The compact design of the PROTEGO FA-G in-line deflagration flame arrester makes it the state of the art technology for installation in pipes with diameters of up to 2”. The devices are installed with minimal distance to the burner to protect fuel feed lines. When installing the deflagration flame arrester, make sure that the distance between potential ignition sources and the location of the installed device, does not exceed the L/D ratio (pipe length/pipe diameter), for which the device was approved. As per EN 12874 the L/D ratio is limited to L/Dmax 50 for deflagration flame arresters of explosion groups IIA and IIB3 (NEC groups D and C (MESG 0.65 mm)) and to L/Dmax 30 for explosion group IIC (NEC group B).
Model: FA-I & FA-I-PTFE
Features:
• optimised flow capacity
• different series allow increase of FLAMEFILTER size for given flange connection resulting in lower pressure drop across the device
• lowest pressure drop results in low operating and lifecycle costs
• option for integrated cleaning nozzles can be provided
• modular flame arrester unit enables each individual FLAMEFILTER to be replaced and cleaned
• modular design reduces spare parts cost
• bidirectional flame transmission proof design
• protects with deflagrations for explosion groups IIA and IIB3 (NEC groups D and C)
• design available for elevated operating temperatures and pressures
• available sizes from DN 50 / 2” to DN 1000 / 40”
In the development of the PROTEGO FA-I in-line deflagration flame arrester, a special effort was made to optimise the fluid dynamic flow characteristics. For a given flange connection size of the flame arrester, the FLAMEFILTER size can be chosen from series 1, 2 and 3 (see table 1) for the most adequate flow capacity. When installing the deflagration flame arrester, make sure that the distance between potential ignition sources and the location of the installed device, does not exceed the L/D ratio (pipe length/pipe diameter), for which the device was tested (see table 4).
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| For more details | Download product brochure from the resource section |
| For more details | Download product brochure from the resource section |
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