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Datasheet generated 2026-10-07
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Danfoss RA 2000 thermostatic radiator sensor (operator head), gas-charged, built-in sensor, 5–23 °C setting range, for RA valves (013G2977)

Danfoss · HVAC & Refrigeration · Radiator Thermostats · Denmark · danfoss.com
Part Number
013G2977  ·  HS 9032.10
Danfoss RA 2000 thermostatic radiator sensor (operator head), gas-charged, built-in sensor, 5–23 °C setting range, for RA valves (013G2977)

Danfoss RA 2000 thermostatic radiator sensor, OEM order code 013G2977 — a self-acting thermostatic operator (sensor head): the gas-charged sensing element expands and contracts with room temperature and drives the valve cone through the head, throttling flow to hold the set room temperature with no external power. It clamps onto Danfoss RA-N / RA-U / RA-G radiator valves via the RA connection (ra-click fixing) and requires no wiring or batteries. Temperature setting range 5 °C to 23 °C; sensing charge gas; housing colour White RAL 9016. The head provides built-in frost protection (holds a minimum ~8 °C when turned to the snowflake position), adjustable maximum/minimum temperature limitation and set-point locking with hidden pins under the dial. Genuine Danfoss part; technical data quoted verbatim from store.danfoss.com (code 013G2977). OEM P/N 013G2977, EAN 5702420048161. HS 9032.10 (thermostats). Modulates refrigerant flow to the evaporator in response to superheat at the evaporator outlet.

Technical Specifications

Code number013G2977 Type: RA 2000 Sensors Product group: Radiator Sensors Sensor version: RA 2977 Sensor design: RA 2000 Sensor media: Gas (self-acting thermostatic charge) Sensor type: Built-in sensor Temperature setting range: 5 °C to 23 °C Connection to valve: RA Connection to sensor / valve body: RA-click Frost protection: Yes Temperature limitation: Yes Shut-off (0/closed) function: No Colour: White RAL 9016 Contents of set: Sensor Feature description: Frost protection, limiting and locking of temperature set-point, limited temperature range, anti-theft protection CE mark: No Net weight: 0.164 Kilogram Gross weight: 0.164 Kilogram Packed volume: 0.291 Liter EAN: 5702420048161 HS code: 9032.10 (thermostats)

Properties

MaterialHousing polymer (White RAL 9016); gas-charged thermostatic sensing element
Temperature rangesetting 5 °C to 23 °C
MOQ1

Compatibility

Thermostatic operator head for Danfoss RA-N / RA-U / RA-G radiator valves (RA valve connection). Built-in type — the sensor reads the air at the valve; do not box in or cover the head, and mount horizontal pipework valves so the head is not above the radiator. Confirm the valve family (RA) and sensor connection (RA-click) before ordering; the head fits Danfoss RA valve bodies only. No power supply required (self-acting). Setting range 5 °C–23 °C.

Attached Documents