3-Way 1" Motorised Zone Valve

The Resideo V4044F1034/U motorized zone valve is a 3-way diverter valve with 1" female threaded connection (DN25), designed to control the flow of hot or cold water in heating and cooling systems. Equipped with a 230 V electric actuator, spring return and SPST auxiliary switch, it enables automatic flow management between the different branches of a hydronic installation.

This model belongs to the Resideo V4044F series and is especially suitable for residential installations and small commercial applications. Its brass body, two-position operation and compact design make it easy to integrate into hydronic HVAC, heating and cooling systems.

Main features of the Resideo V4044F1034/U valve

• Type: 3-way motorized diverter zone valve.
• Connection: 1" female thread.
• Nominal diameter: DN25.
• Power supply: 230 V AC, 50 Hz.
• Actuation: two-position electric with spring return.
• Kvs value: 8.1.
• Maximum operating pressure: 8.6 bar.
• Maximum close-off differential pressure: 0.55 bar.
• Auxiliary switch: SPST.
• Fluid temperature: 5 to 88 °C.
• Maximum ambient temperature: 50 °C.
• Body material: brass.
• Actuator cover and base: galvanized steel.
• Reference: V4044F1034/U.

Automatic flow control in heating and cooling systems

The Resideo V4044F1034/U is designed to provide automatic flow diversion between AB-A and AB-B ports. In this way, it directs water to different circuits according to system demand, making it suitable for zoned heating systems, hydronic HVAC and other applications where automatic selection of one of two hydraulic paths is required.

Its two-position operation simplifies system control: an electrical signal actuates the valve motor and the spring return system automatically restores the corresponding position when power is removed.

1" connection and Kvs 8.1 capacity

The valve features 1" female threaded connections, equivalent to DN25, a common size in heating and cooling hydraulic circuits. Its Kvs 8.1 flow rating allows it to work in installations that require high flow capacity within the hydraulic limits specified by the manufacturer.

Resideo specifies a maximum operating pressure of 8.6 bar, while the maximum differential pressure for closing is 0.55 bar.

230 V motorized actuator with spring return

The actuator operates with a 230 V AC, 50 Hz power supply and uses a spring return system. The valve is designed for cyclic operation, switching between its two positions according to commands received from the control system.

The mechanism also includes manual operation, useful for positioning the valve when needed during installation, testing or in the event of a power failure.

Integrated SPST auxiliary switch

One of the distinguishing features of the V4044F version is the inclusion of an SPST end switch auxiliary contact. This contact allows the valve to be coordinated with other equipment in the installation, such as a boiler, circulation pump or other system control components.

This means the valve can be part of control systems where electrical confirmation of a specific position is required before activating another element of the installation.

Durable construction for hydronic systems

The hydraulic body of the Resideo V4044F1034/U is made of brass, while the actuator cover and base are made of galvanized steel. The stem is made of stainless steel and the internal sealing elements include elastomeric materials suitable for water circuits.

The valve can be used with water or water-glycol mixtures compatible with the specifications indicated by Resideo and VDI 2035. The fluid temperature range is between 5 and 88 °C, so it can be used in both heating and cooling circuits.

Simplified maintenance

The construction of the V4044 series is designed to make installation and maintenance tasks easier. Resideo indicates that the motorized assembly can be replaced without disconnecting the valve body hydraulic connections or fully draining the circuit, reducing the intervention required during maintenance operations.

Its compact design also makes installation easier in plant rooms, service cabinets and other spaces where available room is limited.

Applications of the Resideo V4044F1034/U zone valve

This 3-way motorized valve is suitable for hydronic control in different types of installations, including:

• Residential heating systems.
• Zone-based heating systems.
• Water cooling circuits.
• Hydronic HVAC systems.
• Small commercial installations.
• Control and diversion of hot or cold water between two circuits.
• Installations where the valve must be coordinated with a pump, boiler or other device via auxiliary switch.

Technical data for the Resideo V4044F1034/U

• Brand: Resideo.
• Series: V4044F.
• Reference: V4044F1034/U.
• Valve type: diverter zone valve.
• Number of ways: 3.
• Control type: 2 positions.
• Connection size: 1".
• Nominal diameter: DN25.
• Connection type: BSPP female thread.
• Kvs: 8.1.
• Cv: 9.5.
• Power supply: 230 V AC.
• Frequency: 50 Hz.
• Auxiliary switch: yes.
• Auxiliary switch type: SPST.
• Return: spring return.
• Manual operation: yes.
• Maximum operating pressure: 8.6 bar.
• Maximum close-off differential pressure: 0.55 bar.
• Minimum fluid temperature: 5 °C.
• Maximum fluid temperature: 88 °C.
• Maximum ambient temperature: 50 °C.
• Body material: brass.
• Stem material: stainless steel.
• Ball material: NBR.
• Seal material: EPDM.
• Compatible fluids: water and water-glycol mixtures according to the manufacturer's specified conditions.

3-way valve for zone control

Thanks to the combination of DN25 1" connection, Kvs 8.1, 230 V supply, spring return and auxiliary switch, the Resideo V4044F1034/U makes it possible to automate water distribution in heating and cooling systems. Its three-way configuration makes it easy to switch between two circuits, while the auxiliary switch allows integration with other HVAC system components.

To ensure correct valve operation, the flow direction, mounting positions, pressure and temperature limits, and electrical wiring instructions specified by Resideo must be observed.