IMPCO CT425M-2 Mixer



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The Model 425 carburetor is a single-diaphragm air valve carburetor/mixer. It offers a down draft air inlet that can be used for remote air filtration or open-element type air filters. Available with a silicone diaphragm and a tamper resistant configuration, the Model 425 is also suitable for feedback applications.


Fuel Type LPG (Vapor) or Natural Gas

Inlet Pressure 8.0” Water Column vaporized LPG/Natural Gas Vapor

Operating Temperature -40°F to +250°F (-40°C to +121°C)

Mounting Position Vertical

Diaphragm Material Hydrin (standard) or Silicone (optional)

HP/kW Rating 287 HP (214 kW) at 460 CFM (217.1 L/s) and 1.5” in Hg manifold depression

333 HP (248 kW) at 533 CFM (252 L/s) and 2.0” in Hg manifold depression

Weight 2.913 lbs