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 8860 Back Pressure Regulator 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