Belimo — Stocking Distributor · Damper Actuators & Control Valves · Memphis, TN

Belimo Actuators & Control Valves —
LF24, AF Series, Characterized Control Valves & EPIV

Memphis Control Center stocks Belimo damper actuators and control valves for commercial HVAC and building automation — LF Series spring return damper actuators (35 in-lb, 24V), AF Series heavy-duty damper actuators (180 in-lb), TF Series AC 100–240V actuators (22 in-lb), B2/B3/R3 characterized control valves, EPIV pressure-independent valves, and G series globe valves with compatible actuators. Belimo was founded in 1975 in Switzerland and is the world's leading manufacturer of damper actuators. All Belimo products carry a 5-year warranty. Free same-day shipping from Memphis, TN since 1967.

Browse All Belimo Products Call (901) 458-2000
Belimo Stocking Distributor LF · AF · TF · NF Damper Actuators 5-Year Belimo Warranty 4,777 Belimo Products
World's #1 Actuator BrandBelimo pioneered the direct-coupled damper actuator in 1975 — the global standard for HVAC damper and valve control
5-Year WarrantyEvery Belimo product carries a 5-year limited warranty — the best in the HVAC actuator industry
Fail-Safe Spring ReturnSpring return actuators fail to a defined position on power loss — standard for smoke, fire, and outdoor air dampers
Same-Day ShippingOrders by 2 PM CT ship same day — always free

Damper Actuators — Most Searched Series

Belimo damper actuators are direct-coupled — no crank arm or linkage required on most applications. Select by torque rating (in-lb), voltage, and control signal (on/off or modulating). Spring return = fail-safe (moves to defined position on power loss). Non-spring return = non-fail-safe (holds last position on power loss). Contact us for selection help.

Industry Best Seller LF Series — 35 in-lb · 24V · Spring Return

Belimo LF Series — the most widely used Belimo damper actuator. Spring return (fail-safe), 35 in-lb [4 Nm] torque, AC/DC 24V, direct coupled. The LF24 covers most small-to-medium commercial damper applications. Available in on/off (LF24), on/off with SPDT switch (LF24-S), 2–10V modulating (LF24-SR), and MFT/configurable (LF24-MFT) variants. No mechanical end switches required — stall-force detection eliminates wear.

35 in-lb [4 Nm] Spring Return · Fail-Safe AC/DC 24V On/Off · Modulating · MFT 5-Year Warranty
Heavy Duty AF Series — 180 in-lb · Spring Return

Belimo AF Series — heavy-duty spring return damper actuator, 180 in-lb [20 Nm]. For larger dampers requiring more torque than the LF series provides. The AFBUP (universal power) accepts AC 24–240V / DC 24–125V, making it the most versatile AF variant for field replacement — one part number fits most voltage situations. AFBUP-S adds 2x SPDT auxiliary switches. Available in on/off, modulating (SR), and MFT variants. Direct coupled, spring return, no linkage required.

180 in-lb [20 Nm] Spring Return · Fail-Safe AFBUP: AC 24–240V / DC 24–125V AFBUP-S: 2x SPDT Switch 5-Year Warranty
120V TF Series — 120V · On/Off · Spring Return

Belimo TF Series — AC 100–240V spring return damper actuator for line-voltage applications. 22 in-lb [2.5 Nm], spring return (fail-safe), on/off control. The TFB120-S adds 1x SPDT auxiliary switch. The TFB120-SR provides 2–10V modulating control. Despite the "120" in the model name, the TFB series accepts AC 100–240V (range: 85–265V AC) — suitable for 120V, 208V, and 240V AC systems. Direct coupled to the damper shaft. Used on AHUs, VAV boxes, and commercial HVAC applications requiring 120V control.

AC 100–240V (85–265V range) Spring Return · Fail-Safe 22 in-lb [2.5 Nm] TFB120-S: 1x SPDT · TFB120-SR: Modulating
Non-Fail-Safe NF Series — Non-Spring Return

Belimo NF Series — non-spring return (non-fail-safe) damper actuators. Hold last position on power loss — no return spring means lower power consumption and longer service life in applications where fail-safe is not required. The NF24-SR provides 2–10V modulating control. Used on economizer dampers, return air dampers, and other applications where a defined fail position is not code-required. The NF24-MFT supports configurable control signal.

Non-Spring Return Holds Last Position AC/DC 24V On/Off · Modulating · MFT

Belimo Damper Actuator Quick-Select Guide

SeriesTorqueVoltageControlFail-SafeShop
LF2435 in-lbAC/DC 24VOn/OffSpring Return ✓Shop
LF24-S35 in-lbAC/DC 24VOn/Off + 1x SPDTSpring Return ✓Shop
LF24-SR35 in-lbAC/DC 24V2–10V ModulatingSpring Return ✓Shop
LF24-MFT35 in-lbAC/DC 24VConfigurable MFTSpring Return ✓Shop
AFB24180 in-lbAC/DC 24VOn/OffSpring Return ✓Shop
AFB24-S180 in-lbAC/DC 24VOn/Off + 2x SPDTSpring Return ✓Shop
AFB24-SR180 in-lbAC/DC 24V2–10V ModulatingSpring Return ✓Shop
AFBUP-S180 in-lbAC 24–240V / DC 24–125VOn/Off + 2x SPDTSpring Return ✓Shop
TFB120-S22 in-lbAC 100–240VOn/Off + 1x SPDTSpring Return ✓Shop
NF24-SR35 in-lbAC/DC 24V2–10V ModulatingNon-SR (holds position)Shop

Can't find your model? Contact us or call (901) 458-2000 with your torque requirement, voltage, and damper shaft size.

Belimo Control Valves

Belimo control valves are designed to pair with Belimo actuators for precise hydronic control in commercial HVAC systems. Characterized control valves (CCVs) provide equal percentage flow characteristics — more precise than conventional ball valves. Contact us for valve and actuator pairing help.

CCV · Hydronic B2 / B3 Series — Characterized Control Valves

Belimo B2 (2-way) and B3 (3-way) Characterized Control Valves. A special characterizing disc inside the valve controls flow increase as the valve opens, providing equal percentage flow characteristics similar to a globe valve — without the pressure drop penalty. Overcomes the S-shaped flow curve of conventional ball valves for smooth part-load behavior and optimized energy consumption. Brass body with stainless steel ball and stem. Female NPT connections. Available in 1/2" through 3" pipe sizes with a range of Cv values. The B347 (2" 3-way, Cv 29) is a commonly ordered model. Compatible with RB, TF, AF, and CQ series actuators.

2-Way (B2) · 3-Way (B3) Equal % Flow Characteristic Brass Body · SS Ball & Stem Female NPT · 1/2"–3" 5-Year Warranty
Pressure Independent EP Series — EPIV Pressure-Independent Valves

Belimo EPIV (Energy Valve / Pressure-Independent Control Valve) Series. Combines a pressure-independent characterized control valve, flow meter, and actuator in a single assembly. Maintains precise flow regardless of system pressure fluctuations — no separate balancing valve required. Available with the AKRX-E (fail-safe) or ARX-E (non-fail-safe) actuator. Built-in flow measurement enables energy monitoring. Available in 3/4" through 3" pipe sizes. The EP050+AKRX-E (3/4"), EP150+AKRX-E (1-1/2"), and EP200+AKRX-E (2") are commonly ordered. Reduces hydronic system commissioning time significantly.

Pressure-Independent Built-In Flow Meter No Separate Balancing Valve AKRX-E: Fail-Safe 3/4"–3" Pipe Sizes
Valve Actuator CQ Series — Modulating Valve Actuators

Belimo CQ Series modulating valve actuators for use with Belimo B2 and B3 characterized control valves. The CQKB24-RR is a 24V modulating (2–10V) valve actuator. The "-RR" suffix indicates it is a replacement part. CQKB24-S-RR adds an auxiliary switch. CQKB24-SR-RR provides spring return fail-safe operation. Used to upgrade existing Belimo valve bodies with new actuators, or to replace actuators on installed B2/B3 valve assemblies without removing the valve body from the piping.

24V Modulating 2–10V Control RR = Replacement Part For B2 · B3 Valve Bodies
Globe Valves G Series — Globe Valves & Gas Valves

Belimo G Series globe valves for hydronic and gas applications. The G series covers globe-style valves for steam, hot water, chilled water, and gas control in commercial and industrial applications. Globe valves provide inherently linear or equal percentage control. The G780D is a 3" 3-way globe valve for large hydronic systems, paired with Belimo EV, AFB, or LV series actuators. The SGVL series are gas valve linkage assemblies for Belimo LV actuators on gas valves. The F7200 series covers large butterfly valves for chilled water and condenser water applications.

Globe Valves Steam · Hot Water · Chilled Water G780D — 3" 3-Way SGVL — Gas Valve Linkage F7200 — Butterfly Valves

Belimo — Commonly Ordered

Browse all 4,777 →
LF24 US35 in-lb · Spring Return · 24V · On/Off LF24-S US35 in-lb · SR · 24V · On/Off · SPDT LF24-SR US35 in-lb · SR · 24V · 2–10V Modulating LF24-MFT US35 in-lb · SR · 24V · Configurable MFT AFB24180 in-lb · Spring Return · 24V · On/Off AFB24-S180 in-lb · SR · 24V · On/Off · 2x SPDT AFB24-SR180 in-lb · SR · 24V · 2–10V Modulating AFBUP-S180 in-lb · SR · AC 24–240V / DC 24–125V · 2x SPDT AFBUP-S-X1180 in-lb · SR · AC 24–240V / DC 24–125V · Manual Handle TFB120-S22 in-lb · SR · AC 100–240V · On/Off · 1x SPDT TFRX120-SSR · 120V · Modulating · SPDT CQKB24-RR24V Modulating Valve Actuator · 2–10V CQKB24-S-RR24V Modulating · SPDT Switch · RR Replacement B3472" 3-Way CCV · Cv 29 · Stainless Trim EP150+AKRX-E1-1/2" EPIV · Fail-Safe · 24V EP200+AKRX-E2" EPIV · Fail-Safe · 24V G780D+EVB24-SR3" 3-Way Globe Valve · 24V · 2–10V UGLK0030Linkage Kit — Globe Valve to 2-AF Actuator NF24-SR35 in-lb · Non-SR · 24V · 2–10V Modulating All Belimo ProductsBrowse all 4,777 Belimo products

Belimo

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Belimo is a leading manufacturer of HVAC control systems and valves, known for their high-quality products and innovative technology. Their extensive range of products includes damper actuators, control valves, and sensors, all designed to optimize energy efficiency and ensure optimal indoor climate control. Belimo's solutions are used in commercial buildings, hospitals, schools, and other facilities where precise control of heating, ventilation, and air conditioning systems is crucial. With a strong focus on sustainability and performance, Belimo products offer reliable and efficient operation, helping customers achieve their environmental and energy-saving goals. Trust Belimo for cutting-edge HVAC solutions that deliver superior performance and reliability.

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Need help selecting a Belimo actuator or valve?

Tell us your damper torque requirement, voltage, control signal, and pipe size — we'll find the right model.

Talk to an Expert Call (901) 458-2000

Belimo — Frequently Asked Questions

Common questions about Belimo actuator and valve selection. Contact our team or call (901) 458-2000 for selection help.

What is the difference between Belimo LF and AF series damper actuators?

The main difference is torque. LF Series — 35 in-lb [4 Nm], AC/DC 24V, for small to medium commercial dampers. AF Series — 180 in-lb [20 Nm], AC/DC 24V, for larger dampers where 35 in-lb is insufficient. Both series are available in spring return (fail-safe) and non-spring return, and in on/off, modulating (2–10V), and MFT configurable variants. The AFBUP variant accepts AC 24–240V or DC 24–125V — useful for replacement applications where the original voltage is unknown.

What does spring return mean on a Belimo actuator?

Spring return means an internal spring drives the actuator and damper to a defined position (open or closed) if power is lost — also called fail-safe. Required by code for smoke dampers, fire dampers, outdoor air dampers, and other applications where the damper must move to a safe position on power failure. Non-spring return (non-fail-safe) actuators hold their last position when power is lost — acceptable for economizer and return air dampers where a defined fail position is not code-required.

What is a Belimo Characterized Control Valve and how is it different from a standard ball valve?

A Belimo Characterized Control Valve (CCV) uses a special characterizing disc that controls how flow increases as the valve opens, producing an equal percentage flow characteristic — similar to a globe valve. A standard ball valve has an S-shaped flow curve that is difficult to control at low flow, causing instability at part-load. Belimo B2 (2-way) and B3 (3-way) CCVs overcome this with the characterizing disc, providing smooth part-load behavior and better energy efficiency in variable flow hydronic systems.

What is a Belimo EPIV pressure-independent control valve?

A Belimo EPIV (Energy Valve / Pressure-Independent Control Valve) combines a characterized control valve, differential pressure regulator, and flow meter in a single assembly. It maintains precise flow regardless of system pressure fluctuations — no separate balancing valve required. The built-in flow measurement enables energy monitoring. EPIVs simplify hydronic commissioning: instead of manually balancing circuits, the EPIV sets and maintains design flow automatically. Available in 3/4"–3" pipe sizes, paired with AKRX-E (fail-safe) or ARX-E (non-fail-safe) actuators.

What does the -SR suffix mean on Belimo part numbers?

-SR indicates a modulating control input of 2–10 VDC (proportional control). Without -SR, the actuator is on/off only. -S (without SR) = on/off with auxiliary switch. -MFT = Multi-Function Technology — configurable input signal, feedback, and other parameters programmable in the field. -RR on valve actuators = replacement part (designed to mount on an existing installed Belimo valve body without removing the valve from piping). AFBUP = universal power (AC 24–240V / DC 24–125V).

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