Sfiato automatico con valvola di ritegno 3 / 8" De Dietrich 12721

This automatic air vent with check valve in 3/8" size is essential for removing trapped air from boiler and heating systems, preventing airlocks and corrosion. The integrated check valve stops water from escaping when the vent opens, ensuring reliable operation. A practical component for boiler maintenance and repair, it helps maintain system efficiency and longevity.