Spirotherm Junior TDN100FT completely eliminates 100% of the free air, 100% of the entrained air, and up to 99.6% of the dissolved air in the hydronic heating system. The air bubbles rise and collect in the air chamber before they are vented from the system via an integral automatic valve.
 

Features:

? Maintenance free
? No venting required
? Vent head is designed to stay dry. Dirt and leak resistant
? 1/2' male thread port for pressure testing or remote venting of unwanted gases
? Noise-free operation
? Increased component life
? Reduced oxygen-based corrosion and pump cavitation