DESCRIPTION HHQD-200 Carburetor HHQD-200 is a double diaphragm air-valve carburetor/mixer. It offers a 90° air inlet to provide low overhead clearance, and is available with several Air Horn and throttle valve options. This unit is available for LPG Vapor, Natural Gas, Digester/Landfill Gas applications as low as 500 BTU for with air flow requirements up to 468 CFM (221 L/s). The HHQD-200 is also available for feedback applications with the ’FB’ designation. The 200 mixer provides a convenient 1/4” balance port at the air inlet. Additional low speed idle mixture control can be obtained to lean air/fuel mixtures through the use of optional shims. All DG model mixers reduce air flow by 30%. SPECIFICATIONS Fuel Type ..........................................LPG Vapor, Natural Gas and Digester/Landfill Gas (550-2,500 BTU) Inlet Pressure ....................................-1.5” w.c. (-0.37 kPa) Operating Temperature.....................-40°F to +250°F (-40°C to +121°C) Mounting Position..............................Vertical Diaphragm Material...........................Hydrin (Standard), Silicone (Optional) HP/kW ...............................................292 hp (217.7kW) @ 468 CFM (221 L/s) and 2,500 BTU per cubic foot with 2.0” in Hg manifold depression |