3/4" 3-Way Motorized Zone Valve

The Resideo V4044F1000/U motorized zone valve is a 3-way diverter valve with 3/4" BSPP female threaded connections, designed to automatically control and divert the flow of hot or cold water in heating and cooling systems. It incorporates a 230 V electric actuator, spring return and SPDT auxiliary contact, making it especially suitable for domestic systems and small commercial installations that need to manage water flow between two circuits.

This version of the V4044F series offers a Kvs value of 6.0, a maximum operating pressure of 8.6 bar and a maximum closing differential pressure of 0.69 bar. Its compact construction, brass body and the possibility of replacing the motorized head without removing the hydraulic body make both installation and subsequent maintenance easier.

Main features of the Resideo V4044F1000/U

• Brand: Resideo.
• Series: V4044F.
• Reference: V4044F1000/U.
• Type: motorized diverter zone valve.
• Number of ways: 3.
• Operation: on/off, 2 positions.
• Connection: 3/4" BSPP female thread.
• Nominal diameter: DN20.
• Kvs: 6.0.
• Power supply: 230 V AC.
• Frequency: 50 Hz.
• Return: spring return.
• Auxiliary contact: SPDT.
• Maximum operating pressure: 8.6 bar.
• Maximum closing differential pressure: 0.69 bar.
• Fluid temperature: 5 to 88 °C.
• Nominal operating time: approximately 30 seconds.
• Power consumption: 9.6 VA.
• Current: approximately 0.04 A.
• Cable length: 1 m.
• Manual override: yes.
• Body material: brass.

3-way diverter valve for hydronic systems

The Resideo V4044F1000/U is designed to provide diverting flow control between ports AB-A and AB-B. Unlike a mixing valve, its main function is to direct water from a common port to one of the two available paths depending on the system demand.

This configuration makes it suitable for heating or cooling installations where the flow must be automatically switched between two circuits. It can be used, for example, to manage different zones, hydraulic circuits or terminal units within systems compatible with its 3-way configuration.

230 V electric actuator with spring return

The built-in actuator operates with a 230 V AC, 50 Hz power supply. Its motorized mechanism moves the valve to the required position when energized and uses a spring return system to bring it back to its rest position when the electrical signal stops.

This operating principle allows the valve to be integrated with thermostats, aquastats and other compatible on/off control systems. Resideo specifies an approximate consumption of 9.6 VA and a current of around 0.04 A for this model.

Integrated SPDT auxiliary contact

The main difference between the V4044F series and certain V4044C versions is the inclusion of an SPDT auxiliary microswitch. This contact allows the valve position to be used as a signal to control other components in the installation.

It can be used, for example, to coordinate the operation of a pump, boiler or other equipment once the valve has completed the required movement. Resideo specifies an auxiliary contact rating of 2.2 A at 220-240 V AC and 50 Hz.

3/4" female threaded connections

The V4044F1000/U reference uses 3/4" BSPP internal connections, corresponding to a DN20 nominal diameter. This format makes installation easier using standard threaded connections in heating and HVAC systems.

The model has a Kvs value of 6.0, a hydraulic capacity figure that should be taken into account when sizing the installation together with the required flow rate and available differential pressure.

Operating pressure and hydraulic capacity

The valve supports a maximum static pressure of 8.6 bar. For this 3/4" version, Resideo sets a maximum closing differential pressure of 0.69 bar.

These values must be respected during system design and commissioning to ensure the actuator can switch correctly between both ports and maintain proper operation throughout its service life.

For hot and cold water

The V4044F1000/U is suitable for hydronic control of hot or cold water in heating and cooling systems. Its fluid temperature range is 5 to 88 °C.

Resideo also allows its use with water or water-glycol mixtures compatible with the requirements established for this type of circuit. Water quality and fluid concentration must be kept within the conditions specified by the manufacturer.

Operation in approximately 30 seconds

The valve uses a two-position actuator system and diverts the flow in a nominal time of approximately 30 seconds. This progressive operation allows the transition between the two hydraulic paths to be carried out in a controlled way.

The mechanism is designed for cyclic operation, responding to control system commands when the heating or cooling demand changes.

Integrated manual override

The valve includes a manual override lever that allows the mechanism to be operated when no electrical power is available. This function is especially useful during filling, draining, commissioning or system testing.

When power is restored, the mechanism returns to the automatic operation intended by the actuator and control system.

Brass body and durable materials

The hydraulic body of the Resideo V4044F1000/U is made of brass. The seat is also brass, while the stem is made of stainless steel. The closing element is made of NBR and the seals use EPDM.

The actuator cover and base are made of galvanized steel, providing mechanical protection for the electrical assembly and operating mechanism.

Simplified actuator maintenance

The V4044 series design allows the complete motorized head to be removed or replaced without disconnecting the valve body from the hydraulic connections or draining the system. The motor itself can also be replaced without removing the hydraulic body.

This feature simplifies maintenance operations when the intervention only affects the actuator, reducing the work required on the installation piping.

Compact installation

Resideo has designed the V4044 range with a compact construction aimed at making integration into domestic installations and small commercial systems easier. The model is supplied with a 1-meter connection cable, allowing it to be wired into the control circuit.

During installation, the port arrangement, flow direction indicated by the manufacturer and the permitted mounting positions must be respected. In addition, the actuator must be protected against environmental conditions incompatible with its specifications.

Applications of the Resideo V4044F1000/U valve

• Domestic heating systems.
• Small commercial installations.
• Hydronic cooling systems.
• Hot and cold water control.
• Zone-based heating installations.
• Automatic flow diversion between two circuits.
• Systems with radiators or hydronic emitters.
• Compatible fan coil applications.
• Installations requiring an auxiliary contact to coordinate other equipment.

Technical data of the Resideo V4044F1000/U

• Manufacturer: Resideo.
• Range: V4044F.
• Reference: V4044F1000/U.
• Application: hydronic control.
• Type: motorized diverter zone valve.
• Number of ways: 3.
• Control: 2 positions, on/off.
• Flow configuration: AB-A / AB-B.
• Connection: internal BSPP.
• Size: 3/4".
• Nominal diameter: DN20.
• Kvs: 6.0.
• Cv: 7.0.
• Power supply: 230 V AC.
• Frequency: 50 Hz.
• Power consumption: 9.6 VA.
• Current: 0.04 A.
• Return: spring return.
• Auxiliary contact: SPDT.
• Auxiliary contact rating: 2.2 A at 220-240 V AC, 50 Hz.
• Maximum static pressure: 8.6 bar.
• Maximum closing differential pressure: 0.69 bar.
• Fluid temperature: 5-88 °C.
• Maximum ambient temperature: 52 °C.
• Operating relative humidity: 5-95%, non-condensing.
• Nominal operating time: 30 seconds.
• Cable length: 1 m.
• Body material: brass.
• Seat material: brass.
• Stem material: stainless steel.
• Closing element: NBR.
• Seals: EPDM.
• Actuator cover and base: galvanized steel.
• Manual opening: yes.

Automatic flow control between two circuits

The Resideo V4044F1000/U 3-way 3/4" motorized valve combines a diverter valve, a 230 V electric actuator, spring return and an SPDT auxiliary contact in a single assembly. Its 6.0 Kvs and female threaded connections make it easy to integrate into heating and cooling systems that need to automatically alternate flow between two branches.

The possibility of manual operation and replacing the motorized head without removing the hydraulic body makes commissioning and maintenance easier. To ensure correct operation, the pressure, temperature, electrical wiring and installation conditions specified by Resideo must be respected.