FlowCon EDP Tech Note

FlowCon EDP Tech NoteDESCRIPTION The FlowCon EDP series is a range of externally adjustable differential pressure control valves. The purpose of the valve is to keep a constant differential pressure and thereby avoid noise in the sub-system that the valve is control- ling. The FlowCon EDP insert can be mounted in multiple valve housings meeting multiple installation demands and allowing valve servicing without removing the housing from the pipework. The FlowCon EDP insert holds a patented dual spring construction ensuring a large differential pressure adjustment range. Setting of the specific Δ P required over the controlled sub-system is externally operated and can easily be adjusted even when the valve is installed and in operation. The main purpose of the FlowCon EDP is to provide a valve with a large Δ P range in a flexible insert construction and still ensure easy selection, installation and maintenance of the product. EDP.1 EDP.2 EDP.3 Setting: Q min Q max Q min Q max Q min Q max Flow range, l/hr (GPM) 1.0 2.0 3.0 15 (0.066) 15 (0.066) 15 (0.066) 330 (1.45) 810 (3.57) 1390 (6.12) 15 (0.066) 15 (0.066) 15 (0.066) 1720 (7.57) 2970 (13.1) 5820 (25.6) 200 (0.88) 300 (1.32) 200 (0.88) 3670 (16.2) 5550 (24.4) 13600 (59.9) 4.0 15 (0.066) 1970 (8.67) 15 (0.066) 5890 (25.9) 270 (1.19) 13900 (61.2) 5.0 15 (0.066) 2000 (8.81) 15 (0.066) 5980 (26.3) 640 (2.82) 14000 (61.6) As the FlowCon EDP is insert-based, it is not required to let pipe size determine selected design flow and design ΔpC. The column chart to the right shows the flow span for each EDP insert size and each EDP insert will fit into valve housings available for more than one pipe diameter. 100000 10000 l/hr EDP.1 EDP.2 EDP.3 Example: Based on the EDP.1 insert (DN15, DN20 or DN25 pipe size) and a flow velocity of 0.8 m/sec, the following example flows and corresponding ΔpVmin are calculated: EDP.1 Pipe size Example flow Δ pV MIN mm (in) l/hr (GPM) kPaD (psid) 15 (1/2) 500 (2.20) 1.9 (0.28) 20 (3/4) 900 (3.96) 5.9 (0.86) 1000 25 (1) 100 1400 (6.16) 14 (2.0) 10 Tech note · FlowCon EDP · june 2021 · www.flowcon.com Page 4 of 7Page 3Page 5