FlowCon Wafer The High Flow Valve Series The FlowCon Wafers are designed to meet the higher capacity flow limiting requirements. Applica- tions are many: from air handling units and boiler flow control in common HVAC systems over multi- ple chillers or pump balancing system in high-rise buildings to industrial applications. The FlowCon Wafers utilize precision calibrated stainless steel inserts to achieve the desired flow rate. With multiple inserts mounted in parallel within the valve housing, the sum of each installed insert’s flow rate equals the total flow rate for the valve. becomes a fixed orifice device. This ensures that, even under extreme conditions, no part of the sys- tem is starved or shut down. Energy efficient heating and cooling systems require accurate flow control to ensure proper operation of primary plant equipment. Under typical conditions in large hydronic systems, the pressure fluctuates dramatically as pumps are switched on or circuits are isolated. FlowCon Wafers will help to safeguard equipment and ensure that flow through every ac- tive circuit remains constant and predictable. Below its pressure differential range, the insert is simply a fixed orifice device. This allows a modulat- ing valve in the same circuit to operate with valve authority up to the flow rate specified. Once in its ΔP range, the spring mounted insert-cup slides within the insert housing adjusting the effective open ori- fice area to the exact point, where the specified flow rate will be delivered. As ΔP increases, the orifice area closes and vice versa. In multi-insert sizes, all inserts will operate simultaneously. When the pres- sure differential range is exceeded, the insert again • Automatic and Dynamic balancing - required max. flow is achieved and maintained. • 100% pressure independent - providing the correct flow while compensating for pressure fluc- tuations in the system. • Reliable and robust pre-set stainless steel insert(s) with few moving parts. • Wide range in sizes and flow rates up to DN1000 (40”) and 2287 l/sec (36250 GPM). • High accuracy of ±5%.
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