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Product category: Gas Blenders


The Acme Model FMP-350 Gas Blender is designed to mix two or more non-reactive gas streams and achieve accuracy to within 2% of its components. This unit is best utilized for low pressure/low flow and explosion proof applications.

Flow CapacityAverage max flow rate of 350 SCFH (flowmeter/gas dependent)
Inlet Pressure0-200 PSIG
Outlet Pressure0-150 PSIG
Accuracy± 2% (60-80º F)
ConnectionsSupply gas inlets 3/8" FNPT Blend Outlet: 3/4" FNPT
Surge Vessel Size30 gallon, painted carbon steel
Weight140 lbs
Dimensions60 1/2"H x 14 1/2"W x 14 1/2"D
ControlsAutomatic, actuated by supply gases.
Regulating gas to blender is customer's responsibility.

Design Features

  • Brass construction with carbon steel tank
  • All pneumatic (non-electric) controls suitable for use in Class 1, Division II Hazardous Locations
  • Visual flowmeters for component gases
  • Weatherproof
  • Construction to mix 3 or 4 component blends
  • Automatic shutdown feature available
  • Inlet filters/regulators available
  • Dust Cover Enclosure (optional)

System Operations

Supply gas streams are monitored by built-in flowmeters, each equipped with an integral flow controller. Since accurate mixing depends on constant fixed flows at the flowmeters, varying blended gas demands must be met by the use of an accumulator or surge tank. By varying the flow rates, blends may be obtained in numerous varieties until the limits of the flowmeters are reached. The unit is equipped with direct reading scales to simplify blending.

Although pressure downstream of the blender may vary, the gas flow controllers maintain constant flows through the meter. Constant pressure is achieved by regulating the upstream flows.

Once the desired proportions are established, the Model FMP-350 will assure consistent blends on a start-stop basis.

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