Today, many engineers want more than a properly functioning hydronic system. They are demanding two additional things; more flow and a lower pressure drop (head loss) through the automatic flow control valve.

The higher flow allows them to select a smaller size valve (resulting in a lower first cost) and the lower pressure drop reduces the pump BHP.

Figure 3. HI-FLOW CARTRIDGE	Figure 4. HI-FLOW CARTRIDGES IN WAFER VALVE

To fill this need, FlowCon offers a newly developed Hi-Flow all stainless cartridge as shown in Figure 3. It is used in, multiples, in wafer valves, as shown in Figure 4.

Figure 5 shows a FlowCon Wafer Valve specification sheet. If the building design requires a wafer valve that controls flow at 7.570 L/min (2,000 gpm) and you select one with Standard Flow cartridges, the valve size would be 12" (see selection marked with red ovals in Figure 5.) with either a head loss of 9.1 mAq (30 feet) and a nominal control range of 90 to 880 kPaD or a head loss of 5.6 mAq (18.4 feet) and a nominal control range of 30 to 140 kPaD. Instead, if you select one with Hi-Flow cartridges, the valve size would be 10" (see selection marked with green ovals in Figure 5.) with a head loss of only 3.5 mAq (11.5 feet) and a nominal control range of 35 to 220 kPaD.