The water within the installation contains air which can form corrosion and reduce the thermal transfer. A Flexvent is fitted at places where the... Flamco Flexvent 3/8 Automatic AirVent 27750. Automatic bleed valve with very compact br housing and 3/8 inch male thread. The T-Plus is the perfect solution for setting up branches or other changes to operational structures. Thanks to its extremely compact shape, the Flamco Flexvent 3/8 inch valve can be easily installed in any system that can be installed at a temperature below 90°C (with a tip of max. 120°C) and a pressure of 6 bar (with a peak of max. 10 bar). As a quality , every Flamco nozzle is tested before it leaves our factory. The Flexvent seal seat is protected from dirt as the protective chamber is placed on the float, Weight: 0.0220462262 pounds, Manufacturer: Flamco