DANFOSS 3-piece radiator valve set Box 1/2 straight RA-FN 15 S + RLV-S + REDIAclick (S)

The DANFOSS 3-piece radiator valve set Box 1/2 straight RA-FN 15 S + RLV-S + REDIAclick (S) is a complete assembly for controlling and balancing hot-water radiator systems. The set combines a straight RA-FN 15 S thermostatic valve body, an RLV-S lockshield/regulating valve and a REDIAclick (S) adapter for secure and quick connection to the radiator. It is intended for use where accurate flow regulation, isolation and a reliable mechanical connection are required during installation or replacement of radiator valves in residential and light commercial heating circuits.

Advantages

The set offers combined functionality for flow control, shut-off and connection in a single package, reducing installation time. The RA-FN 15 S valve body provides stable hydraulic performance and is compatible with standard thermostatic heads. The RLV-S lockshield ensures accurate system balancing by allowing fine adjustment of flow rates. The REDIAclick (S) adapter enables a secure mechanical connection and facilitates swift replacement or retrofit of existing radiator valves without extensive pipework alterations.

Suitable for

• Residential hot-water radiator installations
• Light commercial heating circuits requiring radiator balancing
• Replacement or retrofit of existing radiator valves
• New radiator installations where a straight 1/2 connection is specified

Key specifications

• Valve type: straight thermostatic valve body (RA-FN 15 S)
• Connection size: 1/2" (straight)
• Includes: thermostatic valve body, lockshield/regulating valve (RLV-S), connection adapter (REDIAclick (S))
• Functionality: flow regulation, shut-off/isolation and mechanical connection
• Application medium: hot-water heating systems
• Suitable for residential and light commercial radiator circuits

How to use

Install the straight RA-FN 15 S valve body onto the radiator inlet with the REDIAclick (S) adapter to ensure a secure mechanical connection. Fit the RLV-S lockshield on the return side to allow balancing and fine adjustment of flow. Commission the radiator by fitting a compatible thermostatic head to the RA-FN 15 S and adjust settings according to the desired room temperatures and system hydraulic requirements. When replacing an existing valve, isolate the circuit, drain the radiator as required and disconnect the old valve before fitting the new set.

Usage recommendations

Use compatible thermostatic actuators and follow local plumbing and heating regulations. Perform hydraulic balancing after installation to ensure even heat distribution and verify tightness at all joints. For long-term performance, inspect connections periodically and service thermostatic heads according to manufacturer guidance.