The Danfoss REGUS M30 015G3630 thermostatic sensor is compared with similar Danfoss thermostatic heads and sets, such as the Danfoss Redia M30 015G3330, DANFOSS Regus RA 015G3690, Danfoss RA 015G3390, the DANFOSS Regus M30x1.5 + RLV-KB valve set, and the DANFOSS Redia RTD head. All of these products are designed for room temperature control in residential and commercial heating systems. The main practical differences between them lie in the valve connection type (M30 thread, RA connection, or RTD), the inclusion of auxiliary shut-off valve bodies in kits, or specific mechanical adjustment features.
⚙️ The comparison covers essential product characteristics: connection or thread type, intended role in the heating system, and installation setup.
| Comparison parameter | Danfoss REGUS M30 015G3630 | Danfoss Redia M30 015G3330 | DANFOSS Regus RA 015G3690 | Danfoss RA 015G3390 | Danfoss Regus M30x1.5 + RLV-KB | DANFOSS Redia RTD | Practical conclusion |
|---|
| Connection / thread type | M30 | M30 | RA | RA | M30x1.5 | RTD | The connection interface determines compatibility with specific brands and models of radiator valves already installed. |
| Primary function | Room temperature sensing | Replacement sensor head | Sensor for RA valves | Sensor for RA valves | Valve and head kit | Head with zero-setting | Most models function as replacement sensors, while the kit includes the complete valve body, and RTD supports a defined shut-off position. |
| Application environment | Residential and commercial | Residential and commercial | Central heating systems | Residential and commercial | Installation and retrofitting | Residential and commercial | All products are suitable for standard hydronic heating systems, differing only in component compatibility requirements. |
◎ Usage scenario analysis helps determine which product is most suitable for specific installation tasks and radiator valve types.
| Use case | Recommended product | Why |
|---|
| Replacing a sensor on an M30 threaded valve | Danfoss REGUS M30 015G3630 or Danfoss Redia M30 015G3330 | Provide accurate temperature sensing and fit directly onto standard M30 threaded connections. |
| Maintaining systems with Danfoss RA valves | DANFOSS Regus RA 015G3690 or Danfoss RA 015G3390 | Engineered specifically for the proprietary RA mounting standard, ensuring secure fit and correct operation. |
| Complete replacement of valve body and head | DANFOSS Regus M30x1.5 + RLV-KB 1/2" straight | Supplied as a complete set combining both the thermostatic actuator and the lockshield valve body for new installations. |
| Need for a defined mechanical shut-off position | DANFOSS Redia RTD | Features an integrated sensor with a mechanical setting marked “0” for positive shut-off capability. |
The Danfoss REGUS M30 015G3630 thermostatic sensor is best chosen for systems utilizing standard M30 threaded radiator valves where reliable automated room temperature regulation is needed. Unlike alternative options, it matches M30 threads directly without adapters and avoids extra valve bodies found in full sets or distinct snap-on interfaces required by RA and RTD variants.
