Description
Detonation Flame Arrester – Group D Gases
Model: 7658A
Description
The Groth Model 7658A Deflagration & Detonation Flame Arrester inhibits flame propgation in gas piping systems. The design makes it ideal to protect liquid storage tanks containing NEC Group D (IEC Class IIA) gases.
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
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: Pre-ignition system pressure up to 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: Pre-ignition system temperatures -4 to 140°F (-20 to 60°C)
Options
Factory installed thermocouples for flame sensing
Other materials available
Sensor ports
Large inspection and cleaning ports
Swing bolts for fast element removal
Technical Documents for Download (PDF)
ATEX Examination Certificate (Flame Arrester Model 7658)
General Arrangement Drawing 7658A
IOM for Model 7658AS Stable Detonation
IOM for Model 7658AU Unstable Detonation
Flame Control
Model 7658A Data Sheet
