Technical data sheetEXT-B2075-PWV-NPT www.belimo.usEXT-B2075-PWV-NPT • en-us • 2021-03-03 • Subject to change1 / 2 • Mode of operation Notes Recommended installation positions Potable Water Valve, 2-way, internal thread • For potable water applications • DVGW certified • ACS certified • WRAS certified • Air-bubble tight Technical data Functional dataValve Size0.75" [20] FluidPotable water Fluid temperature-4...212°F [-20...100°C] Body Pressure Rating600 psi CWP Close-off pressure ∆ ps200 psi Differential pressure Δpmax200 Leakage rate(EN 12266-1) Angle of rotation90° Pipe connectioninternal thread according to ISO 7-1 Servicingmaintenance-free Flow Pattern2-way Cv49 Materials Stembrass SeatPTFE O-ringEPDM Ballchrome plated brass Suitable actuators Non-SpringLRB(X) SpringLF Safety notes The ball valve has to be exercised at least once a week, so that the quality of potable water as well as the functionality are not affected. Product features The on/off ball valve is adjusted by a rotary actuator. The rotary actuator is connected by an on/off signal. Open the ball valve counterclockwise and close it clockwise. Installation notes The ball valve is a regulating device. To fulfil this control task in the long term, the circuit must be kept free from particle debris (e.g. welding beads during installation work). The ball valve can be installed upright to horizontal. The ball valve may not be installed in a hanging position, i.e. with the stem pointing downwards.Technical data sheetEXT-B2075-PWV-NPT www.belimo.usEXT-B2075-PWV-NPT • en-us • 2021-03-03 • Subject to change2 / 2 ServicingBall valves and rotary actuators are maintenance-free.Technical data sheetLF24-3 US www.belimo.usLF24-3 US • en-us • 2021-03-03 • Subject to change1 / 4 On/Off, Floating Point, Spring Return, 24 V On/Off, Floating Point, Spring Return, 24V, Torque min. 35 in-lb, for control of air dampers Technical data Electrical dataNominal voltageAC/DC 24 V Nominal voltage frequency50/60 Hz Power consumption in operation2.5 W Power consumption in rest position1 W Transformer sizing5 VA (class 2 power source) Electrical Connection18 GA plenum cable, 3 ft [1 m], with 1/2" conduit connector Overload Protectionelectronic throughout 0...95° rotation Electrical Protectionactuators are double insulated Functional data Torque motor35 in-lb [4 Nm] Input Impedance1000 Ω (0.6 W) Direction of motion motorselectable with switch 0/1 Direction of motion fail-safereversible with cw/ccw mounting Angle of rotationMax. 95°, Running Time (Motor)150 s constant, independent of load Running time motor noteconstant, independent of load Running time fail-safe<25 s @ -4...122°F [-20...50°C], <60 s @ -22°F [-30°C] Noise level, motor30 dB(A) Noise level, fail-safe62 dB(A) Shaft Diameter3/8...1/2" round, centers on 1/2" Position indicationMechanical Safety data Degree of protection IEC/ENIP54 Degree of protection NEMA/ULNEMA 2 UL Enclosure Type 2 Agency ListingcULus acc. To UL 873 and CAN/CSA C22.2 No. 24-93 Quality StandardISO 9001 Ambient temperature-22...122°F [-30...50°C] Storage temperature-40...176°F [-40...80°C] Ambient humiditymax. 95% r.H., non-condensing Servicingmaintenance-free Weight Weight3.3 lb [1.5 kg] Materials Housing materialgalvanized steel Product featuresTechnical data sheetLF24-3 US www.belimo.usLF24-3 US • en-us • 2021-03-03 • Subject to change2 / 4 Application Operation Typical specification For modulation or On/Off, fail-safe control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications. The actuator is mounted directly to a damper shaft from 3/8” up to 1/2” in diameter by means of its universal clamp, 1/2” shaft centered at delivery. For shafts up to 3/4” use K6-1 accessory. A crank arm and several mounting brackets are available for applications where the actuator cannot be direct coupled to the damper shaft. Control is floating point from a triac or relay, or On/Off from an auxiliary contact from a fan motor contactor, controller or manual switch. The LF series actuators provide true spring return operation for reliable fail-safe application and positive close-off on air tight dampers. The spring return system provides consistent torque to the damper with, and without, power applied to the actuator. The LF series provides 95° of rotation and is provided with a graduated position indicator showing 0 to 95°. The LF uses a brushless DC motor which is controlled by an Application Specific Integrated Circuit (ASIC) and a microprocessor. The microprocessor provides the intelligence to the ASIC to provide a constant rotation rate and to know the actuator’s exact fail-safe position. The ASIC monitors and controls the brushless DC motor’s rotation and provides a digital rotation sensing function to prevent damage to the actuator in a stall condition. The actuator may be stalled anywhere in its normal rotation without the need of mechanical end switches. Power consumption is reduced in holding mode. Floating point, On/Off spring return damper actuators shall be direct coupled type which require no crank arm and linkage and be capable of direct mounting to a shaft up to a 3/4” diameter and centers on a 1/2” shaft (default). The actuators must be designed so that they may be used for either clockwise or counter clockwise fail-safe operation. Actuators shall have an external direction of rotation switch to reverse control logic. Actuators shall use a brushless DC motor and be protected from overload at all angles of rotation. If required, one SPDT auxiliary switch shall be provided having the capability of being adjustable. Actuators with auxiliary switch must be constructed to meet the requirements for Double Insulation so an electrical ground is not required to meet agency listings. Run time shall be constant and independent of torque. Actuators shall be cULus listed, have a 5 year warranty, and be manufactured under ISO 9001 International Quality Control Standards. Actuators shall be as manufactured by Belimo. Accessories Electrical accessoriesDescriptionType Auxiliary switch, mercury-freeP475 Auxiliary switch, mercury-freeP475-1 Signal Siumlator, Power supply AC 230 VPS-100 Transformer, AC 120 V to AC 24 V, 40 VAZG-X40 Mechanical accessoriesDescriptionType Shaft extension 170 mm Ø10 mm for damper shaft Ø 6...16 mmAV6-20 End stop indicatorIND-LF Shaft clamp for LF.. K6 US Shaft clamp reversible, clamping range Ø16...20 mmK6-1 Ball joint suitable for damper crank arm KH8 / KH10KG10A Ball joint suitable for damper crank arm KH8KG6 Ball joint suitable for damper crank arm KH8KG8 Actuator arm, clamping range Ø8...16 mm, Slot width 8.2 mmKH-LF V-bolt Kit for KH-LF.KH-LFV Damper crank arm Slot width 8.2 mm, for Ø1.05"KH12 Damper crank arm Slot width 6.2 mm, clamping range Ø10...18 mmKH6 Damper crank arm Slot width 8.2 mm, clamping range Ø10...18 mmKH8 Anti-rotation bracket LF.LF-P Push rod for KG10A ball joint (36” L, 3/8” diameter).SH10 Push rod for KG6 & KG8 ball joints (36” L, 5/16” diameter).SH8 Wrench 8 mm and 10 mmTOOL-06 Angle of rotation limiter, with end stopZDB-LF Form fit adapter 8x8 mmZF8-LF Mounting Bracket: ZS-260 Right AngleZG-109 Linkage kitZG-110 Mounting bracket for LF.. ZG-112 Damper clip for damper blade, 3.5” width.ZG-DC1 Damper clip for damper blade, 6” width.ZG-DC2Technical data sheetLF24-3 US www.belimo.usLF24-3 US • en-us • 2021-03-03 • Subject to change3 / 4 LF crankarm adaptor kit (includes ZG-112).ZG-LF112 LF crankarm adaptor kit (T bracket included).ZG-LF2 Shaft extension for 3/8" diameter shafts (4" L).ZG-LMSA-1 Shaft extension for 1/2" diameter shafts (5" L).ZG-LMSA-1/2-5 Weather shield 13x8x6" [330x203x152 mm] (LxWxH)ZS-100 Base Plate, for ZS-100ZS-101 Weather shield 16x8-3/8x4" [406x213x102 mm] (LxWxH)ZS-150 Explosion Proof Housing 16x10x6.435" [406x254x164 mm] (LxWxH), UL and CSA, Class I, Zone 1&2, Groups B, C, D, (NEMA 7), Class III, Hazardous (classified) Locations ZS-260 Weather shield 17-1/4x8-3/4x5-1/2" [438x222x140 mm] (LxWxH), NEMA 4X, with mounting brackets ZS-300 Weather shield 17-1/4x8-3/4x5-1/2" [438x222x140 mm] (LxWxH), NEMA 4X, with mounting brackets ZS-300-5 Shaft extension 1/2"ZS-300-C1 Shaft extension 3/4"ZS-300-C2 Shaft extension 1"ZS-300-C3 Electrical installation 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. Meets cULus requirements without the need of an electrical ground connection. Actuators with appliance cables are numbered. Provide overload protection and disconnect as required. Actuators may also be powered by 24 VDC. Actuators Hot wire must be connected to the control board common. Only connect common to neg. (-) leg of control circuits. Terminal models (-T) have no-feedback. Actuators may be connected in parallel if not mechanically linked. Power consumption and input impedance must be observed. Floating PointFloating Point - Triac Source Floating Point - Triac Sink DimensionsTechnical data sheetLF24-3 US www.belimo.usLF24-3 US • en-us • 2021-03-03 • Subject to change4 / 4 Dimensional drawingsNext >