This is a premium quality pressure relief safety valve (PRV) for Biasi boilers. It is designed to automatically release excess pressure when it exceeds the safe limit of 3 bar, thereby preventing damage to the boiler and its components such as the heat exchanger or pump. Made from high-quality brass, this valve helps maintain the correct operating pressure, ensuring efficient boiler performance and extending its lifespan. Equivalent to Genuine Part Number: BI1001112. Connection: 1/2"" BSP (Male x Female).