Groth Biogas Equipment Click on desired biogas equipment to view features, specs, options and download documents. Digester Cover Equipment 8800SDV Safety Diverter Valve 61T Gauge Hatch – Locked Down Hinged Cover 8200 Roof Manhole Cover Flame Control 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 Gas Control Equipment 8110 Back Pressure Check Valve 8170 Well Type Manometer 8330 Sediment Trap 8600 Foam Separator 8500 Flame Trap Assembly 8450 Drip Trap – Automatic 8490 Electrically Actuated Drip Trap 8460 Manual Drip Trap 8530 Thermal Shutoff Valve Relief Valves 8800 Pressure Vacuum Valve and Flame Arrester 8820A Pressure Vacuum Valve & Flame Arrester Pipe-Away 1200A Biogas Pressure Vacuum Relief Valve 1220A Biogas Pressure Vacuum Relief Valve with Pipe-Away 2300A Biogas Emergency Relief Valve – Weight Loaded 12E-TWW-0 Biogas Pressure Vacuum Relief Valve Vent to Atmosphere 12F-TWW-0 Biogas Pressure Vacuum Relief Valve with Pipe-Away Waste Gas Burners 8392B Waste Gas Burner Flame Front Ignition Technology 8391 Waste Gas Burner- Candlestick, Auto / Manual Ignition