The TRV4 Classic holds a 'Class I' rating for efficiency, as designated by the European Valve Manufacturers Association, establishing it as one of the most energy-efficient Thermostatic Radiator Valves (TRVs) on the market. Introduced in 1993 and continuing to be Britain's top-selling range of TRVs, Drayton's TRVs have consistently set high standards in terms of design, performance, and quality within the industry.

• This product will help to lower the energy use in your home, and supports sustainable living through better use of resources
• An accurate liquid-filled sensor
• Contemporary slimline design
• Keymark approved to EN215
• Adjustable flow rate
• Frost position

• Temperature-range limiting feature
• Reverse flow valve: can be installed in the flow or return of the radiator
• Manufactured in the UK
• Pack includes TRV4 Classic sensing head, 15mm angle valve and lockshield