The Flo-Pac AFL has the capability to accurately measure GPM by reading differential pressure through the cartridge, not the valve. Previous automatic balancing valve generations are limited to detecting flow only through the balancing valve, therefore no accurate GPM can be determined. The AFL has factory set flow rates with guaranteed accuracy of +/- 5% from 2-60 PSID. The anti-fouling stainless steel cartridge allows debris to be flushed through the body, eliminating particulate accumulation and blockage at the outlet orifice.

The model MB manual balancing shutoff and metering valve consists of a combination ball valve union with a low loss venturi device, which results in very low turbulence and high accuracy flow readings. The MB is unlike the circuit setter type valves, which require reding the differential pressure across a partially opened valve creating high turbulence and low accuracy.