bus diesel cng

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