Various types of foam proportioners for precisely proportioning foam concentrate in the water-stream of an extinguishing system can be used. The choice of proportioner depends on a number of factors: the type of extinguishing system, the required capacity, and the available energy, space (inside/outside/size) and pressure.
Matre Balanced Foam Proportioners are known for their reliability. They are extremely reliable and precise. Pressurized water within the performance range and foam is what is required for a perfect proportioning.
The range is from 100% flow and down to 10% (some are slightly less).
For test purposes or to run the system with water only it is possible to close the foam inlet or to insert water also in the foam inlet.
Material: Bronze BS 1400 LG2 Bronze BS 1400 AB2 Titanium Gr.2
Interface for water supply: ANSI 16.5 150lb, DIN PN16
Design pressure: 20 bar
Test pressure: 30 bar
Water pressure range: 5-19 bar
Foam concentrate inlet pressure: 1-10 bar higher than the water pressure limited to 20 bar.
Insertion rate: Nominal 1% (Within 1% – 1,3%) Nominal 3% (Within 3% – 3,9%) Nominal 6% (Within 6% – 7%) (Tolerance according to NFPA 11)
