ARX24-MFT | Belimo | Control Valves

Valve Actuator, Non-Spring, 24V, MFT




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product specifications

Actuator Series


Agency Listings

cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02, CE acc. to 2004/108/EC

Ambient Temperature Range

-22 to 122 °F (-30 to 50 °C)

Angle of Rotation


Application Type


Electrical Connection

18 GA plenum rated cable with 1/2 in conduit connector protected NEMA 2 (IP54) 3ft 1m 10 ft 3m and 16 ft 5m


Non-Spring Return

Feedback Output U

2 to 10 VDC, 0.5 mA max, VDC variable


NEMA 2, IP42, UL Enclosure Type 2

Input Impedance

100 k Ω for 2 to 10 VDC (0.1 mA), 500 Ω for 4 to 20 mA, 1500 Ω for PWM, floating point and On/Off

Manual Override

External Push Button

Position Indication

integrated into handle

Power Consumption Holding

1.3 W

Power Consumption Running

3.5 W

Power Supply

24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10%

Power Supply Type


Quality Standard

ISO 9001

Running Time

150 seconds


maintenance free

Storage Temperature Range

-40 to 176 °F (-40 to 80 °C)


180 in-lb

Transformer Sizing

6 VA (class 2 power source)


Actuator Only

Unit of Measure



2-way or 3-way


1-1/4 to 2 in

Control Signal


Supply Voltage (Nominal)

24 VAC

product series specifications

  • Size: 1/2" - 3"
  • Cv Range: 0.8 to 240 (2-way), 0.3 to 83 (3-way)
  • Body Pattern: Two-way, three-way mixing or diverting
  • Flow Characteristic: Two-way equal percentage, three-way linear
  • Leakage Rating: 0% for port A to AB; 2% maximum for port B to AB
  • Maximum Closeoff Pressure: 200 psi (1/2"-2"), 100 psi (2"- 3")
  • Materials Of Construction: Forged brass body with nickel plating, chrome plated (or stainless steel) ball, PTFE Teflon® seals, Tefzel® characterized disc, EPDM o-rings
  • Media Compatibility: Hot or chilled water, <60% glycol
  • Media Temperature Range: 0° to 250°C (-18° to 120°C)
  • Compatible Actuators: Non-spring return TR, LRB, NRB, ARB; spring return TF, LF, AF
  • Pressure Drop: Maximum differential pressure 30 psi
  • Pressure Rating: 600 psi (1/2" to 1-1/4"), 400 psi (1-1/4" to 3") for two-way; 600 psi (1/2" to 1"), 400 psi (1-1/4" to 2") for three-way
  • Approvals: CSA, CE
  • Warranty: 5 years

product series features

  • Equal percentage characteristic (2-way)
  • Large Cv range from 0.8 to 170
  • Assembled, ready for installation
  • Spring return or non-spring return actuators
  • Floating, two-position, or proportional control

more information & related documents

Series Description

The B2 Series 2-way ball valves and B3 Series 3-way ball valves are used for two-position, floating or proportional control of HVAC hot or chilled water. Perfect for HVAC applications and Building Automation Systems, BAS, each two-way and three-way ball valve comes assembled with direct-coupled Belimo electric actuators with spring return or non-spring return operation.

Kele Description