The Belimo Z2075QPF-K+CQCB24-SR-R is a ZoneTight 3/4 in. press fit 2-way ball zone valve with a Cv of 9.8, combined with the CQCB24-SR-R AC/DC 24 V non fail-safe modulating 2...10 V actuator. It provides zero-leakage shut-off with 75 psi close-off pressure for chilled or hot water systems.
ZoneTight QCV zone valves suit large commercial buildings where higher close-off and the ability to change flow are needed. The valve fits space-restricted areas and assembles without tools. Flow is possible in both directions.
Specifications verified 2026-10-09 against Belimo technical data sheets Z2075QPF-K+CQCB24-SR-R (actuator rev. 2024-06-27, valve rev. 2024-06-12) and Z2075QPF-K (rev. 2026-02-07).
Best For
- Unit ventilators and fan coil units
- VAV reheat coils and duct coils
- Fin tube casing and radiant panels
- Closed chilled or hot water systems, up to 60% glycol
- 3/4 in. press fit piping in space-restricted areas
- Building automation systems with 2...10 V or 4...20 mA analog outputs
Warranty
Belimo ZoneTight zone valves carry a 5-year warranty. If temperature exceeds the 212°F operating range due to a boiler control failure, the valve will safely contain the hot water but the manufacturer's warranty becomes invalid.
Key Features
Zero-Leakage Ball Valve
Forged brass 2-way ball valve with 0% leakage rate, equal percentage flow characteristic, and 75 psi close-off pressure.
Tool-Free Snap Assembly
The actuator plugs onto the valve by hand with no tools or linkage. Mounting orientation can be selected in 180° increments.
Field-Adjustable Flow
An end stop clip changes the angle of rotation in 2.5° increments to set the maximum flow of the Cv 9.8 valve. An adaptation is triggered on the actuator after each change.
Low Power Draw
Draws 0.4 W in operation and 0.3 W at rest, with 1 VA transformer sizing.
Modulating Control with Feedback
2...10 V control input with 2...10 V position feedback. Accepts 4...20 mA with a 500 Ω ZG-R01 resistor. Control direction: 2 VDC Close, 10 VDC Open.
35 s Running Time
Motor running time is 35 s / 90°.
ZOT Supply is an authorized distributor of Belimo products.
Technical Specifications
| Valve: Belimo Z2075QPF-K | |
|---|---|
| Valve type | ZoneTight 2-way ball valve (QCV), press fit |
| Valve size | 3/4 in. [DN 20] |
| Pipe connection | Press fit |
| Flow pattern | 2-way |
| Cv | 9.8 |
| Flow characteristic | equal percentage |
| Leakage rate | 0% |
| Close-off pressure Δps | 75 psi |
| Differential pressure Δpmax | 40 psi |
| Body pressure rating | 250 psi |
| Fluid | chilled or hot water, up to 60% glycol |
| Fluid temperature range (water) | 36...212°F [2...100°C] |
| Controllable flow range | 75° |
| Angle of rotation note | Operating range 15...90° |
| Flow setting | End stop clip, 2.5° increments |
| Flow direction | Both directions possible |
| Installation orientation | upright to horizontal (in relation to the stem); not hanging with the stem pointing down |
| Servicing | maintenance-free |
| Valve body | forged brass |
| Stem | brass |
| Stem seal | EPDM O-ring |
| Seat | PTFE, O-Ring EPDM |
| Ball | chrome plated brass |
| Valve weight | 0.61 lb [0.28 kg] |
| Actuator: Belimo CQCB24-SR-R | |
| Actuator | CQCB24-SR-R |
| Actuator type | Non fail-safe |
| Control | Modulating 2...10 V |
| Nominal voltage | AC/DC 24 V |
| Nominal voltage frequency | 50/60 Hz |
| Nominal voltage range | AC 19.2...28.8 V / DC 21.6...28.8 V |
| Power consumption in operation | 0.4 W |
| Power consumption in rest position | 0.3 W |
| Transformer sizing | 1 VA |
| Electrical connection | 22 GA plenum cable, 3 ft [1 m], with 1/2 in. NPT conduit connector |
| Overload protection | electronic throughout 0...90° rotation |
| Electrical protection | actuators are double insulated |
| Operating range Y | 2...10 V |
| Operating range Y note | 4...20 mA w/ ZG-R01 (500 Ω, 1/4 W resistor) |
| Position feedback U | 2...10 V |
| Control direction | 2 VDC Close, 10 VDC Open |
| Angle of rotation | 90° |
| Angle of rotation note | adjustable with mechanical stop |
| Running time (motor) | 35 s / 90° |
| Noise level, motor | 35 dB(A) |
| Position indication | pointer |
| Power source UL | Class 2 Supply |
| Degree of protection NEMA/UL | NEMA 2 |
| Enclosure | UL Enclosure Type 2 |
| Agency listing | cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02 CE acc. to 2014/30/EU and 2014/35/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 | 35...104°F [2...40°C] |
| Storage temperature | -40...176°F [-40...80°C] |
| Housing material | UL94-5VA |
WARNING: This product can expose you to lead which is known to the State of California to cause cancer and reproductive harm. For more information go to www.p65warnings.ca.gov
Documentation
Technical Data Sheet: Belimo Z2075QPF-K+CQCB24-SR-RTechnical Data Sheet: Belimo Z2075QPF-K ValveInstallation Instructions: CQ Actuators with ZoneTight ValvesBelimo ZoneTight Zone Valves BrochureBelimo Zone Valve Guide SpecificationsConsultant SpecificationsZoneTight Technical DocumentationFrequently Asked Questions
What does the Belimo Z2075QPF-K+CQCB24-SR-R include?
It combines the Belimo Z2075QPF-K ZoneTight 3/4 in. press fit 2-way ball valve (Cv 9.8) with the CQCB24-SR-R AC/DC 24 V non fail-safe modulating 2...10 V actuator.
What is the Cv of the Z2075QPF-K+CQCB24-SR-R, and can the flow be adjusted?
The Cv is 9.8. Maximum flow can be reduced in the field by moving the end stop clip, which changes the angle of rotation in 2.5° increments. After every change of the flow setting, an adaptation must be triggered on the modulating actuator.
What close-off pressure is the Z2075QPF-K+CQCB24-SR-R rated for?
Close-off pressure is 75 psi, maximum differential pressure is 40 psi, and the valve body pressure rating is 250 psi.
Is the Z2075QPF-K+CQCB24-SR-R fail-safe?
No. The CQCB24-SR-R is a non fail-safe actuator. The Z2075QPF-K valve also accepts Belimo CQKB electronic fail-safe actuators.
What control signal does the Z2075QPF-K+CQCB24-SR-R accept?
It takes a 2...10 V control signal (Y input) and provides 2...10 V position feedback (U output). A 500 Ω ZG-R01 resistor converts a 4...20 mA signal to 2...10 V. Control direction: 2 VDC Close, 10 VDC Open.
What power supply does the Z2075QPF-K+CQCB24-SR-R need?
Nominal voltage is AC/DC 24 V, 50/60 Hz. Nominal voltage range is AC 19.2...28.8 V / DC 21.6...28.8 V. Transformer sizing is 1 VA.
What fluids and temperatures can the Z2075QPF-K+CQCB24-SR-R handle?
It is rated for chilled or hot water with up to 60% glycol in closed systems, at fluid temperatures of 36...212°F [2...100°C].
How should the Z2075QPF-K+CQCB24-SR-R be installed?
Install the valve upright to horizontal in relation to the stem, never hanging with the stem pointing down. Flow is possible in both directions, and a suitable strainer is recommended.
- Valve Pattern:
- 2-Way
- Valve Size:
- 3/4 Inch
- Connection Type:
- Press Fit
- CV Rating:
- 9.8
- Max Close-Off Pressure:
- 75 psi
- Max Operating Pressure:
- 250 psi
- Medium Temperature Range:
- 36-212 °F
- Body Material:
- Forged Brass
- Actuator Type:
- Non Fail-Safe
- Voltage:
- 24VAC/DC
- Control Signal:
- 2-10VDC
- Auxillary Switch:
- None
- Power Connection:
- Plenum Cable
