The Flamco Flexvent air vent is an automatic 1/2 inch (15 mm) air release valve for heating and cooling systems. This brass fitting efficiently removes trapped air from closed hydronic systems, prevents air bubble formation, and ensures optimal system performance. The robust brass construction with corrosion-resistant properties guarantees long-term reliability in various water-based heating applications. With its compact design of approximately 60 mm in height and 25 mm in diameter, the Flexvent air vent can be easily installed at system high points where air naturally accumulates. The automatic operation requires no manual intervention, continuously releasing air bubbles while maintaining system pressure integrity. Suitable for residential and commercial heating systems, this air vent improves heat transfer efficiency and reduces noise from air circulation. The 1/2 inch BSP threaded connection ensures compatibility with standard piping systems. Manufactured to industrial standards for hydraulic components, this valve provides consistent performance at operating temperatures ranging from 5 °C to 110 °C and a maximum working pressure of 10 bar. The internal float mechanism and needle valve design allow for reliable air release while preventing water leakage. Regular maintenance includes occasional cleaning for optimal performance in systems with varying water quality conditions.