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Around-The-Pump Proportioner

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The Darley Around-The-Pump Proportioner is a simple and inexpensive way to add foam capability to all discharges of a truck.
Grouped product items
Product NameSKU QTY
Proportioning Kit Down to 1/2% at 100-1400 GPM
$2,079.95
AM152
Proportioning Kit Down to 1% at 60-400 GPM
$1,348.95
G365
The Darley Around-The-Pump Proportioner is a simple and inexpensive way to add foam capability to all discharges of a truck.

  • It allows for different flow requirements separately or in any combination.
  • A portion of the truck output goes through an eductor and back to the inlet side of the pump.
  • A metering valve is adjusted for the correct foam percentages based on the total discharge.
  • This system offers several advantages when compared to an inline eductor:
  • Variable Flow Rate-the discharge rate can be adjusted for the specific application.
  • The rate is infinitely variable up to the maximum flow of the unit.
  • Variable Pressure-the system operates at any pressure above 120 psi.
  • The pump operation is the same with foam or water.
  • No Back Pressure Restrictions-the unit is not affected by hose length or elevation loss.
  • No Nozzle Restrictions-the unit operates with any size or type of nozzle.
  • Note: Maximum 5 psi Hydrant Pressure


  • The pump Kit Includes: A. Eductor, B. Metering Valve, C. Check Valve, D. Water Valve, and E. Foam Valve Instruction Panel Plate


  • Call Today For More Detailed Information On The Darley Around-The-Pump Proportioning Kit
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