The Belimo B216+TFRB24-SR-S is a 1/2 in. 2-way characterized control valve (CCV), Cv 16, with a stainless steel ball and stem, assembled with the Belimo TFRB24-SR-S fail-safe actuator for modulating 2...10 V control on a 24 VAC/DC supply.
A TEFZEL® characterized disc gives the valve an equal percentage flow characteristic. Rated 600 psi body pressure and 200 psi close-off, for chilled or hot water, up to 60% glycol from 0...250°F [-18...120°C].
Best For
- Heating and cooling coils in air handling units
- Fan coil unit heating and cooling coils
- Unit ventilators
- VAV box reheat coils
- Bypass loops
- Hydronic systems with variable flow
Warranty
This Belimo characterized control valve product carries a 5-year warranty on all components from the date of production, with the first two years unconditional.
Key Features
Characterized Disc
TEFZEL® disc produces an equal percentage flow characteristic.
Fail-Safe Actuator
TFRB24-SR-S is a fail-safe actuator: fail-safe running time <25 s @ -20...50°C, <60 s @ -30°C.
Modulating Control
Proportional control on 2...10 V, with 2...10 V position feedback.
MP-Bus Communication
Communicative control via MP-Bus (MP-Bus max. 16).
Auxiliary Switch
1x SPDT, 1 mA...3 A (0.5 A inductive), DC 5 V...AC 250 V, adjustable 0...95°.
Pressure Ratings
600 psi body pressure rating, 200 psi close-off pressure.
ZOT Supply is an authorized distributor of Belimo products.
Technical Specifications
| Valve: Belimo B216 | |
|---|---|
| Valve Size | 0.5" [15] |
| Fluid | chilled or hot water, up to 60% glycol |
| Fluid Temperature Range | 0...250°F [-18...120°C] |
| Body Pressure Rating | 600 psi |
| Close-Off Pressure (∆ps) | 200 psi |
| Flow Characteristic | equal percentage |
| Leakage Rate | 0% for A–AB |
| Pipe Connection | Internal thread NPT (female) |
| Servicing | maintenance-free |
| Flow Pattern | 2-way |
| Controllable Flow Range | 75° |
| Cv | 16 |
| Characterized Disc | None |
| Valve Body | Nickel-plated brass body |
| Stem | stainless steel |
| Stem Seal | EPDM (lubricated) |
| Seat | PTFE |
| Characterized Disc | TEFZEL® |
| O-ring | EPDM (lubricated) |
| Ball | stainless steel |
| Valve Weight | 0.66 lb [0.30 kg] |
| Actuator: Belimo TFRB24-SR-S | |
|---|---|
| Nominal voltage | AC/DC 24 V |
| Nominal voltage frequency | 50/60 Hz |
| Nominal voltage range | AC 19.2...28.8 V / DC 21.6...35.0 V |
| Power consumption in operation | 1.3 W |
| Power consumption in rest position | 0.6 W |
| Transformer sizing | 2.6 VA |
| Auxiliary switch | 1x SPDT, 1 mA...3 A (0.5 A inductive), DC 5 V...AC 250 V, adjustable 0...95° |
| Switching capacity auxiliary switch | 1 mA...3 A (0.5 A inductive), DC 5 V...AC 250 V |
| Connection supply/control | Cable 3 ft. [1 m], 4x 0.75 mm² |
| Parallel operation | Yes (note the performance data) |
| Communicative control | MP-Bus |
| Number of nodes | MP-Bus max. 16 |
| Operating Range Y | 2...10 V |
| Input impedance | 100 kΩ |
| Operating range Y variable | Start point 0.5...30 V End point 2.5...32 V |
| Operating modes optional | variable (VDC, PWM, on/off, floating point) |
| Position Feedback U | 2...10 V |
| Position feedback U note | Max. 1 mA |
| Position feedback U variable | Start point 0.5...8 V End point 2.5...10 V |
| Position accuracy | ±5% |
| Direction of motion variable | electronically reversible |
| Manual override | No |
| Angle of rotation | Max. 95° |
| Angle of rotation note | adjustable starting at 37% in 2.5% steps (with mechanical end stop) |
| Running Time (Motor) | 95 s |
| Running time motor variable | 75...300 s |
| Running time fail-safe | <25 s @ -20...50°C, <60 s @ -30°C |
| Sound power level, fail-safe | 36 dB(A) |
| Adaptation Setting Range | with Belimo Assistant 2 |
| Power Source (UL) | Class 2 Supply |
| Degree of Protection (NEMA/UL) | NEMA 2 |
| Housing | UL Enclosure Type 2 |
| Agency Listing | cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02, CE acc. to 2014/30/EU |
| Quality Standard | ISO 9001 |
| UL 2043 Compliant | Suitable for use in air plenums per Section 300.22(C) of the NEC and Section 602 of the IMC |
| Ambient humidity | Max. 95% RH, non-condensing |
| Ambient temperature | -22...122°F [-30...50°C] |
| Storage temperature | -40...176°F [-40...80°C] |
| Servicing | maintenance-free |
| Actuator Weight | 1.4 lb [0.62 kg] |
Documentation
Belimo B216+TFRB24-SR-S Technical Data Sheet (Valve + Actuator)CCV Installation InstructionsCharacterized Control Valve (CCV) Technical DocumentationCCV Accessories DocumentationElectronic Valve Applications GuideBelimo Ball Valve Master FormatSuccess Story: Habitat for Humanity Home with Belimo CCVSuccess Story: New York PostSuccess Story: Sonoma State University RenovationSuccess Story: Western Wyoming Community CollegeFrequently Asked Questions
What is the Cv of the Belimo B216+TFRB24-SR-S?
The B216 valve is rated Cv 16.
What size and pipe connection does the B216+TFRB24-SR-S use?
1/2 in. (0.5" [15]) with internal thread NPT (female) connections.
Is the B216+TFRB24-SR-S fail-safe?
Yes. The TFRB24-SR-S is a fail-safe actuator. Fail-safe running time: <25 s @ -20...50°C, <60 s @ -30°C.
What control signal does the B216+TFRB24-SR-S accept?
The TFRB24-SR-S accepts modulating 2...10 V control, operating range Y 2...10 V, and communicative control via MP-Bus.
What power supply does the B216+TFRB24-SR-S need?
Nominal voltage AC/DC 24 V. Transformer sizing: 2.6 VA.
What warranty does the B216+TFRB24-SR-S have?
A Belimo 5-year warranty on all components from the date of production, with the first two years unconditional.
What is the close-off pressure of the B216+TFRB24-SR-S?
200 psi close-off pressure, with a 600 psi body pressure rating.
What fluids can the B216+TFRB24-SR-S control?
Chilled or hot water, up to 60% glycol, fluid temperature range 0...250°F [-18...120°C].
Specifications per Belimo B216 technical data sheet (2026-02-07) and Belimo TFRB24-SR-S technical data sheet (2026-10-30); warranty per Belimo CCV Master Format, Section 230923.11. Content updated November 2026.
- Valve Pattern:
- 2-Way
- Valve Size:
- 1/2 Inch
- CV Rating:
- 16
- Material:
- Stainless Steel
- Actuator Type:
- Fail-Safe
- Voltage:
- 24VAC/DC
- Control Signal:
- 2-10VDC
- Auxillary Switch:
- Yes
- Enclosure:
- NEMA 2
