This Derry Bold TRV in antique brass offers a traditional look with modern thermostatic control. With its angled design, it's ideal for standard UK pipework setups. Built from solid brass, it connects to 15mm pipework and 1/2" BSP radiator threads. Fully demountable, reusable, and protected by a 3-year guarantee. These valves have a 10mm pipework connection, so will fit pipework of the same size. Weight: 0.992080179 Pounds, Manufacturer: UK Radiators