Old Part No: 72988 The TRV4 Classic is Class 1 rated for efficiency by the European valve manufacturers associationmaking it one of the most energy efficient TRVs available.

Available since 1993 and still Britain’s best selling range of Thermostatic Radiator Valves Drayton’s TRVsset the standards for design, performance and quality. The range includes Lockshield and Pushfit packs to suit most domestic and commercial heating systems.

1. 15mm Angle
2. Class 1 rated
3. Reverse ow
4. Accurate liquid sensor
5. Non-stick internals
6. Balance system via the TRV

Applied Standards: BS EN 215

Temperature Setting Range : Approx 10C to 30C

Hysteresis : 0.4K

Water temperature influence : 0.8K

Differential pressure influence : 0.15K