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CONTROL CURVE Flow (%) 100 90 80 70 60 50 40 30 20 10 0 0 1 2 3 4 5 6 7 8 9 10 SM Linear flow Control signal (V) SM Equal% Tech note · FlowCon SM DN50-250 / 2”-10” · april 2024 · www.flowcon.com Page 8 of 9
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GENERAL SPECIFICATIONS 1. PRESSURE INDEPENDENT DYNAMIC CONTROL VALVES – FLOWCON SM 1.1. Contractor shall install pressure independent dynamic control valves where indicated in drawings. 1.2. Valve shall be an electronic, dynamic, modulating, 2-way pressure independent control device. 1.3. Valve shall accurately control flow, independent of system pressure fluctuation. 2. VALVE ACTUATOR 2.1. Valve-actuator coupling shall be snap coupling for fast mounting and de-mounting. 2.2. Actuator housing shall be rated to IP54 including upside-down mounting. 2.3. Actuator shall be driven by a 24V AC/DC motor and shall accept 0(2)-10V, 0(4)-20mA, 3-point floating or 2-position control signal. 2.4. Actuator control mode shall be selectable to Linear flow, Equal percentage, Linear rotation or Linear signal. 2.5. Actuator shall be capable of providing linear feedback signal to the control system. Feedback signal shall be selectable to Auto (equal to input signal), 4-20mA, 0-10V DC or 2-10V DC. 2.6. Automatic calibration of valve position shall be standard. 2.7. Actuator shall include buttons for external programming of all settings. 2.8. Actuator display showing current valve flow, maximum valve flow, input signal, feedback signal, opera- tional direction and control mode shall be standard. 2.9. Optional failsafe versions shall be available. Failsafe versions shall be able to operate valve to either open (max. setting) or closed position from any position in case of power failure. 2.10. Optional BACnet versions shall be available. BACnet versions shall provide remote setting and control of actuator. 3. VALVE HOUSING 3.1. Housing shall consist of ductile iron ASTM A395 Grade-40-18 rated at no less than 4000 kPa (580 psi) static pressure and +120°C (+248°F). 3.2. Housing shall be permanently marked to show direction of flow. 3.3. Housing shall be for installation between flanges. 3.4. Dual pressure/temperature test plugs for verifying accuracy of flow performance shall be standard on all valve sizes. 3.5. Identification label according to PED-requirements shall be available for all valves. 4. FLOW REGULATOR / AUTOMATIC BALANCING UNIT 4.1. Maximum flow setting shall be adjustable to minimum 51 different settings within the range of the valve size. 4.2. Flow regulation unit shall be manufactured of stainless steel and hydrogenated acrylonitrile-butadiene- rubber and shall be capable of controlling flow within ±5% of controlled flow rate of ±2% of maximum flow rate. 4.3. Flow regulation unit shall be accessible for change-out or maintenance. APPLICATION AND SCHEMATIC EXAMPLE DN 50/65/80 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 SM DN50-250 / 2”-10” · april 2024 · www.flowcon.com Page 9 of 9
