Thermoelectric Actuator SALUS T28NC230-8 230V M28 x 1.5 for Radiator Valves

The Thermoelectric Actuator SALUS T28NC230-8 is a 230 V normally closed (NC) actuator with an M28 x 1.5 thread, engineered for controlling radiator and zone valves in central heating systems. It provides simple on/off electric control of valve position, enabling integration with thermostats, zone controllers or building automation to regulate heating circuits. The device is compact and designed for direct mounting on compatible valve bodies to convert electrical signals into mechanical valve movement.

Advantages

The actuator delivers reliable open/close operation with a normally closed fail-safe state, ensuring valves remain closed when power is removed. Its 230 V supply simplifies wiring in standard residential and commercial installations. The M28 x 1.5 thread ensures compatibility with many radiator and zone valve fittings. The unit’s straightforward mechanical design supports low-maintenance operation and easy replacement of manual or older actuators.

Suitable for

• Electric actuation of radiator or zone valves in central heating systems
• Integration with room thermostats and zone controllers for on/off control
• Retrofit or replacement of existing thermoelectric actuators with the same mounting thread
• Residential and small commercial heating circuits requiring simple on/off valve control

When it may not be suitable

This actuator provides only on/off control and is not intended for modulating or proportional valve control where variable flow regulation is required. It is a normally closed unit; systems that require a normally open actuator or a specific fail-safe behaviour different from NC should select an alternative model. Compatibility must be checked for valve bodies that use non-standard mounting sizes or integrated electrical connectors.

Key specifications

• Supply voltage: 230 V AC
• Operational mode: Normally closed (NC), on/off actuation
• Mechanical connection: M28 x 1.5 thread for radiator/zone valves
• Application: Radiator and zone valve electric actuation in central heating systems
• Mounting: Direct mounting onto compatible valve bodies

How to use

Mount the actuator onto a compatible valve body using the M28 x 1.5 thread and secure according to the valve manufacturer’s instructions. Connect the actuator to a 230 V AC supply and wire control signals from a thermostat, timer or zone controller to provide on/off command. When the actuator receives power it moves to the open position; when power is removed it returns to the closed position. Ensure all electrical work is performed by a qualified electrician and that the system is isolated from mains power before installation.

What to consider before purchase

• Verify valve compatibility with an M28 x 1.5 mounting thread and mechanical fit
• Confirm the requirement for a normally closed (NC) on/off actuator rather than a modulating or normally open type
• Ensure availability of a 230 V AC supply and suitable control wiring in the installation location
• Check physical dimensions and clearance for mounting in confined radiator or valve locations

Usage recommendations

For reliable operation, use the actuator with compatible radiator valves and control devices; perform periodic visual checks for secure mounting and secure electrical connections. When replacing an existing actuator, confirm thread and stroke compatibility to ensure correct valve operation.