Description
Biella 1/2″ brass automatic filling valve made in Italy. Combines PRV, NRV, strainer, and shut-off valve in one unit for solar water heaters, boilers, and heating systems.
- Premium Italian Quality – Manufactured in Italy from high-quality brass for superior durability, corrosion resistance, and long service life.
- Automatic Water Filling Function – Maintains the required water pressure in heating systems by automatically refilling when pressure drops.
- Reliable System Protection – Helps protect boilers and solar water heating systems from pressure fluctuations, backflow, and debris contamination.
- Built-In Strainer Filter – Captures dirt and particles before they enter the system, reducing maintenance requirements and improving efficiency.
- Backflow Prevention – Integrated NRV prevents reverse water flow, ensuring safe and reliable operation.
- Easy Installation – Standard 1/2″ BSP inlet and outlet connections for quick integration into most domestic hot water and heating systems.
- Heavy-Duty Brass Construction – Designed for demanding residential and commercial applications.

















