Home » Equipment » GB 2”-10” FP proportioners

GB 2”-10” FP proportioners

Description

The GB “FP” is a high performance foam proportioner designed for use with foam pump and combines very high proportioning accuracy with a low pressure drop. The GB series comes in sizes from 2 inch up to 10 inch, and flow ranges between 110 to 24000 lpm (standard versions). The flow range ratio of 1:10 (1:5 for ARC type foam) makes the GB a flexible component in a fixed foam system. For maximum flexibility the GB proportioners can be modified to suit a unique system specification. It can be modified for adjustable proportioning ratio or for minimal pressure drop or flow rate higher than 100% without changing proportioner body size. The GB “FP” proportioners are standard equipped with check valve and balancing valve.

Function

From the moment that there occurs a minimum water flow through the nozzle, there will be a slight under pressure in the mixing chamber, just behind the nozzle. Connected to this mixing chamber is a pressure sensing tube, connected on the other end to the balancing valve. This valve is balancing the foam concentrate side against the mixing chamber side, with 1 bar difference. The foam concentrate pressure side will be always 1 bar
higher pressurized than the water side. On top of the balancing valve is a check valve situated, to prevent water flowing into the foam concentrate line, when the concentrate pump isn’t pumping.