Unleash Radiator Elegance with a 3 Year Warranty from Manufacturing Defects Our dual fuel kits transform your central heating towel radiator into a versatile dual-fuel system. This allows you to use central heating during the winter months and switch to an electric element in the summer. You'll be able to heat up radiator independently as well as drying towels without turning on your central heating. This system is not only eco-friendly and cost-effective but also improves boiler health and provides enhanced control over your home's heating. Black Dual Fuel TRV Valves Information Valve to radiator Valve to pipe sensor Material: Brass Warranty : 3 Years 1/2" x 15mm Compression Liquid Sensor Response time: Not Exceed 40 mins Hysteresis: <1 K Weight: .