Flame Control Equipment Click on desired biogas equipment to view features, specs, options and download documents. 8800 Pressure Vacuum Valve and Flame Arrester 8820A Pressure Vacuum Valve & Flame Arrester Pipe-Away 7622 Flame Check 8500 Flame Trap Assembly 8400 Pressure Relief and Flame Trap Assembly 7618 Biogas Flame Arrester Vertical Installation 7628 Biogas Flame Arrester Horizontal Installation 76C-UF Flame Arrester