Protego DA-CG Deflagration Flame Arrester, Endurance Burning Proof, End Of Line, ATEX

DA CG Explosion Group: IIA1, D / IIA, C / IIB1, C / IIB2, C / IIB3

• Provides protection against deflagrations and stable and unstable detonations
• low number of FLAMEFILTER discs due to shock absorber technology
• modular design enables individual cleaning and replacement of the FLAMEFILTER discs
• different design allow scalable pressure loss over the area of the FLAMEFILTER
• maintenance-friendly design
• available in large nominal widths
• advanced design for higher operating temperatures and pressures
• bi-directional operation, as well as any flow direction and installation position
• installation of temperature sensors possible
• minimal pressure loss resulting in low operating and lifecycle costs
• cost-effective spare parts

Function and Description

The PROTEGO DA-CG series of detonation arresters was mainly developed for the North American market and optimized to meet the demands of the US Coast Guard. The devices are symmetrical and offer bi-directional flame arresting for deflagrations and stable and unstable detonations.

The effective shock absorber (1) greatly reduces the speed of incoming detonations. This leads to improved flame extinguishing in the narrow gaps of the FLAMEFILTER

 (3). The flame arrester essentially consists of two housing parts with an integrated shock absorber and the PROTEGO flame arrester unit (2) in the center. The PROTEGO flame arrester unit is modular and consists of several FLAMEFILTER discs and spacers firmly held in a FLAMEFILTER casing. The number of FLAMEFILTER discs and their gap size depends on the arrester‘s intended use.

By specifying the operating conditions, such as the temperature, pressure, explosion group, and the composition of the fluid, the optimum in-line detonation flame arrester can be selected. Type PROTEGO DA-CG flame arresters are available for explosion groups IIA to IIB3 (NEC group D to C MESG ≥ 0.65 mm).

The standard design can be used at an operating temperature of up to +60°C / 140°F and an absolute operating pressure acc. to table 3. Devices with special approvals for higher pressures and higher temperatures are available upon request.

The flame arresters have been approved in accordance with the American Standard 33 CFR part 154 and are accepted by the US Coast Guard. 

*The FLAMEFILTER is also avaiable in the materials Tantalum, Inconel, Copper etc when the listed housing and cage materials are used. Special materials upon request.

Pmax = maximum alowable operating pressure in bar / psi absolute, higher operating pressure upon request.

Higher operaring temperatures upon request.