National Foam
Around-The-Pump Proportioner Kit 0.5% Foam 100–1400 GPM
SKU#: AM152
Ships via Standard Ground
Around-the-pump proportioner kit delivers foam down to 0.5% across 100–1400 GPM with flexible flow control and no nozzle restrictions.
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The Around-The-Pump Proportioner Kit is a simple and cost-effective solution for adding foam capability to all discharge lines on a fire apparatus. The system routes a portion of pump output through an eductor and back to the pump inlet, enabling controlled foam proportioning across a wide range of flow demands.
Features
- Variable flow rate: Discharge rate can be adjusted for the specific application
- Infinite adjustment: Flow rate is continuously adjustable up to the unit’s maximum capacity
- Multi-line capability: Supports different flow requirements independently or in combination
Operational Performance
- Variable pressure: Operates at any pressure above 120 psi
- Consistent pump operation: Pump performance remains the same when flowing foam or water
- Accurate proportioning: Metering valve is set to achieve correct foam percentages based on total discharge
System Advantages
- No back pressure restrictions: Performance is not affected by hose length or elevation loss
- No nozzle restrictions: Operates with any size or type of nozzle
- Wide flow range: Designed to proportion foam accurately from 100 to 1400 GPM
System Design
- Pump around configuration: Diverts a portion of discharge through an eductor and returns it to the pump inlet
- Low percentage capability: Proportions foam down to 0.5%
- Hydrant compatibility: Intended for use with a maximum hydrant pressure of 5 psi
How is it used
The system is installed on a fire apparatus pump. A portion of the pump discharge is circulated through the eductor and returned to the inlet side of the pump. The operator adjusts the metering valve to achieve the desired foam percentage while maintaining required flow and pressure.
Intended for
Fire departments and apparatus operators who require a high-flow foam proportioning solution with flexible pressure and flow performance across multiple discharge lines.
Maintenance information
Regular inspection of the eductor, valves, and connections helps ensure reliable operation. Periodic verification of the metering valve setting supports accurate foam proportioning.
Storage information
When not installed, components should be stored in a clean, dry environment to protect system integrity and maintain readiness.
What is included
- Eductor
- Metering valve
- Check valve
- Water valve
- Foam valve
- Instruction panel plate
- Flow range: 100–1400 GPM
- Minimum operating pressure: 120 psi
- Foam proportioning capability: Down to 0.5%
- Maximum hydrant pressure: 5 psi
- System type: Around-the-pump proportioner
- Model: 3217-7039-3