Two-piece Danfoss RAE/RLV-KS 1/2 Straight Set (DWZ) - thermostatic valve components

Danfoss two-piece RAE/RLV-KS 1/2 Straight (DWZ) set is a compact replacement and installation kit designed for thermostatic radiator valve assemblies with a 1/2" straight connection. The set contains the two mechanical components required to restore or install the moving parts of RAE and RLV-KS valve series, enabling accurate radiator temperature control in both residential and commercial heating circuits. Designed for straightforward integration, the components match the form and function of the original valve internals used in Danfoss thermostatic systems.

Advantages

The two-piece set provides a direct mechanical replacement for worn or damaged internals without the need to replace the entire valve body, reducing repair time and material cost. Components are designed for reliable fit with RAE and RLV-KS series valves featuring a 1/2" straight connection, ensuring consistent thermal control and stable operation. The kit supports routine maintenance and helps extend the service life of existing radiator valves when used according to manufacturer guidance.

Suitable for

• Repairing thermostatic radiator valves of the RAE and RLV-KS series with 1/2" straight connections
• Replacement of worn internal components during scheduled heating system maintenance
• Installation work where the moving parts of the valve need to be renewed without replacing valve bodies

Key specifications

• Compatibility: designed for RAE and RLV-KS thermostatic radiator valve series
• Connection type: 1/2" straight
• Contents: two mechanical valve internals required for operation
• Application: hydraulic radiator circuits in residential and commercial heating systems

How to use

Shut down the heating system and isolate the radiator before beginning work. Drain the radiator or close the appropriate isolation valves to prevent fluid loss. Remove the thermostatic head and unscrew the valve bonnet to access the internal components. Extract the existing internals and install the two components from the Danfoss set in the correct orientation, ensuring proper seating and alignment. Reassemble the valve bonnet and thermostatic head, restore system pressure, and check for leaks. Adjust the thermostatic head and verify correct temperature regulation.

Usage recommendations

Use the set only with compatible RAE or RLV-KS valve bodies with 1/2" straight connections. Follow standard safety procedures when working on heating systems, including depressurising and cooling the system and using appropriate tools. If uncertain about compatibility or installation steps, consult a qualified heating engineer or refer to Danfoss installation instructions.