Technical Data2120Servicechilled, hot water, up to 60% glycolFlow CharacteristicA-port equal percentage, B-port modified for constant common port flowControllable Flow Range75°Size [mm]1.5” [40]End FittingNPT female endsBodyforged brass, nickel platedBallstainless steelStemstainless steelStem PackingEPDM (lubricated)SeatTeflon® PTFESeat O-ringEPDM (lubricated)Characterized DiscTEFZEL®Body Pressure Rating [psi]400Media Temperature Range (Water)0°F to 250°F [-18°C to 120°C]Max Differential Pressure (Water)50 psi (345 kPa)Close-Off Pressure200 psiCv19 Weight3.7 lb [1.7 kg]Leakage0% for A to AB, <2.0% for B to ABServicingmaintenance freeFlow PatternApplicationThis valve is typically used in air handling units on heating or cooling coils, and fan coil unit heating or cooling coils. Some other common applications include Unit Ventilators, VAV box re-heat coils and bypass loops. This valve is suitable for use in a hydronic system with variable or constant flow.Suitable Actuators Non-SpringSpringB338ARB(X)AFB(X)Dimensions (Inches [mm])H1EFBACDH2ARB, ARXABCDEFH1H210” [254]4.39” [112]7.25” [184]5.75” [146]1.73” [44]2.33” [59]0.75” [20]0.5” [15]B338, 3-Way, Characterized Control ValveStainless Steel Ball and Stem800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA / CARIBBEANDate created, 01/24/2018 - Subject to change. © Belimo Aircontrols (USA), Inc.Dimensions (Inches [mm]) DCBAEFNRB N4, NRX N4ABCDEF11.36” [289]4.39” [112]9.29” [236]7.79” [198]3.15” [80]Dimensions (Inches [mm])EFH1DBACH2ARQB, ARQXABCDEFH1H29.9” [251]4.39” [112]7.85” [199]6.35” [161]2.28” [58]0.75” [20]Dimensions (Inches [mm])DBACEFAFRB, AFRXABCDEF10.77” [274]4.39” [112]7.88” [200]6.38” [162]2.33” [59]B338, 3-Way, Characterized Control ValveStainless Steel Ball and Stem800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA / CARIBBEANDate created, 01/24/2018 - Subject to change. © Belimo Aircontrols (USA), Inc.Technical Data100523Power Supply24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10%Power Consumption Running5 WPower Consumption Holding2.5 WTransformer Sizing7.5 VA (class 2 power source)Electrical Connection3ft [1m], 18 GA appliance cable with 1/2” conduit connectorOverload Protectionelectronic throughout 0° to 95° rotationOperating Range Yon/offAngle of Rotation90°Direction of Rotation (Motor)reversible with CW/CCW mountingDirection of Rotation (Fail-Safe)reversible with CW/CCW mountingPosition Indicationvisual indicator, 0° to 95° (0° is full spring return position)Manual Override5 mm hex crank (3/16” Allen), suppliedRunning Time (Motor)<75 secRunning Time (Fail-Safe)<20 secAmbient Temperature Range-22°F to 122°F [-30°C to 50°C]Storage Temperature Range-40°F to 176°F [-40°C to 80°C]HousingNEMA 4, IP66, UL enclosure type 4Agency Listings†cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02, CE acc. to 2004/108/EC and 2006/95/ECNoise Level (Motor)<45 dB (A) Noise Level (Fail-Safe)<62 dB (A) Servicingmaintenance freeQuality StandardISO 9001†Rated Impulse Voltage 800V, Type of action 1.AA, Control Pollution Degree 3AFRX24 N4NEMA 4, On/Off, Spring Return, 24 V800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA / CARIBBEANDate created, 08/14/2017 - Subject to change. © Belimo Aircontrols (USA), Inc.Wiring DiagramsINSTALLATION NOTESAActuators with appliance cables are numbered.Provide overload protection and disconnect as required.Actuators may also be powered by 24 VDC.45Actuators may be powered in parallel. Power consumption must be observed. 48Parallel wiring required for piggy-back applications.Meets cULus requirements without the need of an electrical ground connection.!WARNING! LIVE ELECTRICAL COMPONENTS!During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with live electrical components. Have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury. Blk (1) CommonRed (2) + Hot24 VAC TransformerLine Volts134548AOn/OffAFRX24 N4NEMA 4, On/Off, Spring Return, 24 V800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA / CARIBBEANDate created, 08/14/2017 - Subject to change. © Belimo Aircontrols (USA), Inc.Next >