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FLOW CURVES AND SETTINGS Δ pC (kPaD) 60 50 40 30 20 16 10 0 15 0 1 500 1,5 2 FlowCon EDP.1 800 1000 Flow (l/hr) 2,5 3 3,5 3,1 1500 4 4,5 2000 5 Δ pC (kPaD) 80 70 60 50 40 30 20 10 0 15 0 1000 1 1,5 FlowCon EDP.2 2000 2 2,5 3000 4000 Flow (l/hr) 3 3,5 4 5000 6000 4,5 5 Δ pC (kPaD) 120 110 100 90 80 70 60 50 40 30 20 10 0 200 0 2000 1 1,5 FlowCon EDP.3 4000 6000 8000 10000 12000 14000 Flow (l/hr) 2 2,5 3 3,5 4 4,5 5 Tech note · FlowCon EDP · march 2024 · www.flowcon.com Page 6 of 7
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GENERAL SPECIFICATIONS 1. DIFFERENTIAL PRESSURE CONTROL VALVES - FLOWCON EDP 1.1. Contractor shall install the differential pressure control valves where indicated in drawings. 1.2. Valve shall be an insert based, mechanically operated, differential pressure control device, which shall accurately control differential pressure over a sub-system independent of system pressure fluctuation. 1.3. Valve housing shall be permanently marked to show direction of flow. 2. VALVE HOUSING 2.a. FlowCon A 2.a.1. Valve housing shall consist of forged brass ASTM CuZn40Pb2 or DZR ASTM CuZn36Pb2As depending on size, rated at no less than 2500 kPa (360 psi) static pressure at +120°C (+248°F). OR…. 2.b. FlowCon AB 2.b.1. Valve housing shall consist of forged brass ASTM CuZn40Pn2 or DZR brass ASTM CuZn36Pb2As or ductile iron QT450-10 GB1348 / EN-GJS-450-10, rated at no less than 2500 kPa (360 psi) static pressure at +120°C (+248°F). 2.b.2. Pressure/temperature test plugs for verifying accuracy of performance shall be available for all valve sizes. OR…. 2.c. FlowCon ABV 2.c.1. Valve housing shall consist of forged brass ASTM CuZn40Pb2, rated at no less than 2500 kPa (360 psi) static pressure at +120°C (+248°F). 2.c.2. Valve ball shall consist of chemically nickel plated brass (ASTM CuZn40Pb2). 2.c.3. Pressure/temperature test plugs for verifying accuracy of performance shall be available for all valve sizes. 3. PRESSURE REGULATION UNIT 3.1. Regulation unit shall consist of glass reinforced PPS/POM and stainless steel spring. 3.2. Regulation diaphragm must be an EPDM in-line rolling diaphragm. Flat diaphragm or external disc regulation are not accepted. 3.3. Regulation unit shall be insert based and readily accessible for change-out or maintenance. 3.4. Regulation unit shall be externally adjustable with the valve in-line and the system in operation. 3.5. Regulation unit shall be mounted with double spring system allowing differential pressure adjustment within minimum 5-50 kPaD (0.7-7.3 psid) (in the same insert without adjustment to the housing). 3.6. Regulation unit must protect the system against noise and must have a clearly defined differential pres- sure range within a flow range of 15-2000 l/hr (0.066-8.81 GPM) for DN15/20/25 (1/2”, 3/4”, 1”) or 15-6000 l/hr (0.066-26.4 GPM) for DN25/32/40 (1”, 1 1/4”, 1 1/2”) or 200-14000 l/hr (0.88-61.6 GPM) for DN40/50 (1 1/2”-2”). UPDATES For latest updates please see www.flowcon.com FlowCon International can accept no responsibility for possible errors in any printed material. All rights reserved. Tech note · FlowCon EDP · march 2024 · www.flowcon.com Page 7 of 7
