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Detonation Flame Arrester - Group D Gases

Model 7658A

Detonation Flame Arrester - Group D Gases

The Groth  Model  7658A Deflagration & Detonation Flame Arrester inhibits flame propagation in gas piping systems. The design of the Model 7658A Flame Arrester makes it ideal to protect liquid storage tanks containing  NEC Group D (IEC Class IIA) gases with a Maximum Experimental Safe Gap (MESG) equal to or greater than 0.90 mm.

Specifications

Size: 2" (DN50) x 5" (DN125) through 6" (DN150) x12" (DN300)

Material: Housing standard material: carbon steel or stainless steel • Flame element standard material: stainless steel

Pressure: Maximim Operational pressure 15.7 psia (1.08 bara)

Certification: Certified to ATEX Directive in compliance with EN ISO 16852:2010 Certificate #: IBExU12ATE X2160 X • Certified to USCG per 33 CFR Part 154 App. A Type II Certificate #: CSA LO 4000-5704 • Thermocouple is required for flame detection per the ATEX & USCG

Temperature: Operational Temperature Range -4 to 140 ºF (-20 to 60 ºC)

Features

• Vertical or horizontal installation
• In-line or end-of-line deflagrations
• Unstable detonations
• Burn Time tBT 10 minutes
• Bi-directional with respect to flow and ignition source
• Elements are easily removed in-line for cleaning and maintenance and are economical to replace if necessary
• Low pressure drop with multiple element sizes available for each flange size
• Thermocouple is required for flame detection per the ATEX & USCG codes

Options

• Factory installed thermocouples for flame sensing
• Other materials available
• Sensor ports
• Large inspection and cleaning ports
• Swing bolts for fast element removal

Dimensions

Detonation Flame Arrester - Group D Gases

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