DANFOSS 3-piece Regus RA set with nut, RA-N valve and RLV-S 15 angled actuator

The DANFOSS 3-piece Regus RA set combines a connection nut, an RA-N radiator valve and an RLV-S 15 angled actuator into a compact assembly for controlling hot-water radiator flow in central heating systems. The set is designed to provide mechanical valve control with an angled actuator interface that reduces space requirements behind radiators and simplifies installation in confined locations. It is suitable for both replacement of existing radiator components and installation in new radiator circuits where precise, reliable flow regulation is required.

Advantages

The Regus RA set offers a space-saving angled actuator design that allows installation where straight actuators would not fit. The RA-N valve provides stable mechanical control of water flow to the radiator, while the included connection nut ensures a secure and correct mechanical coupling between valve and actuator. The components are matched to work together, reducing the need for additional adapters and minimizing potential leakage points.

Suitable for

• Replacement of existing radiator valves and actuators in residential heating systems
• New radiator installations requiring angled actuator mounting
• Tight installation spaces behind radiators or close to walls
• Systems where mechanical, fail-safe valve control is preferred

Key specifications

• Set composition: connection nut, angled radiator valve (RA-N type), angled actuator (RLV-S 15)
• Actuator orientation: angled (suitable for compact mounting)
• Control type: mechanical on/off or modulating valve control depending on actuator interaction
• Application: hot-water central heating radiator flow control
• Mounting: angled connection to radiator body for reduced clearance behind radiator

How to use

Fit the RA-N valve to the radiator connection according to the radiator manufacturer’s instructions and secure it with the supplied connection nut. Mount the RLV-S 15 angled actuator onto the valve spindle, ensuring it is correctly aligned and fully seated to enable reliable mechanical control. Adjust system balancing and bleed the radiator after installation to remove air and confirm correct water flow. Commission the radiator circuit at normal operating temperature and check for leaks around the connection nut and valve body.

Usage recommendations

Use this set when space behind the radiator is limited or an angled actuator orientation is required. Verify that the valve size and thread match the radiator connection before installation. Regularly inspect mechanical connections after initial operation and service the valve actuator per the system maintenance schedule to ensure continued, reliable operation.