Emission Control Systems and Components



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AGV 50 Pilot - Low NOX Pilot Fuel Valve

The AGV 50 Pilot Valve is a gas metering valve that was specifically designed to meet the demanding requirements of a pilot valve in a Dry Low Nox application. These applications place additional demands on a fuel system because of the nature of the combustion process in a low NOx environment.

The precise flow requirements in Low NOx combustion systems create problems with fuel flow because the turbine is running lean. The Pilot Valve application is demanding because of the high back pressure and low fuel flow. The Pilot valve is designed to operate only in a subsonic mode. If the valve were allowed to operate in a supersonic mode, different flow equations would need to be worked out to produce appropriate fuel flow and sometimes these resulting conditions can be difficult to anticipate.