FlowCon K Dynamic Flow Control Valve The FlowCon K series are designed as a constant flow valve which maintains a specific flow rate independent of pressure fluctuations within a hydronic heating or cooling system. FlowCon K is primarily designed for use in terminal balancing. The flow rate for the application is selected and FlowCon K does the rest, eliminating time consuming and costly manual balancing. Whether the application is air conditioning or heating, terminal unit or branch balancing, constant or modulating flow, the FlowCon K is the most accurate yet flexible way of balancing any hydronic system completely automatic. Features and Benefits - Automatic balancing, the correct flow rate for each circuit is achieved automatically. - Dynamic balancing, the correct flow rate is maintained as each valve compensates for pressure fluctuations in the system. - Elimination of branch or ’’partner’’ balancing valves (fewer total valves used in each project). - Easily accessible insert for flow rate changing or maintenance. - Accuracy of ±5%. - Pressure/temperature measurement plugs for verifying operating pressure differential range. Selection In selecting a FlowCon K valve, the following information is needed: 1) flow rate, 2) pressure differential range and 3) pipe size. 1) Flow Rate Selection In determining the flow rate, it must be decided whether the circuit will be a constant flow or modulating system. If the valve is being fit into a constant flow system, simply select the flow rate from the Flow Rate Selection Chart (please see the catalogue: FlowCon Inserts) closest to the designed rate. If the valve is being installed in variable flow application (used in series with a modulating control valve), simply select the flow rate closest to the designed maximum flow rate of the circuit. The FlowCon K will then limit the flow to that specific maximum flow rate. Below the maximum, the valve will act as a fixed orifice device adding minimal pressure loss to the system. This allows the modulating valve to have authority up to the maximum flow rate designed for that circuit. For applications controlling the flow of fluids other than water, the specific gravity, viscosity and operating temperature are needed for proper selection. The inserts are calibrated for water at approximately 16°C. The flow rate of a insert may be influenced by fluids with characteristics other than water (e.g. a valve calibrated for 2 l/sec used in an application with water and glycol at a concentration of 25% glycol will have an adjusted nominal flow rate of 1.969 l/sec). For questions concerning other fluids and temperatures, please contact your FlowCon representative or one of the FlowCon offices.
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