The new Sewair‑Combo® NXC, a Next Generation Compact (NXC) combination air valve is engineered to provide reliable air release, vacuum protection and continuous air management in municipal and industrial wastewater systems. Ideally suited for wastewater force mains with changing slopes and critical high points where air pockets commonly accumulate, the Sewair‑Combo® NXC provides a reliable solution for maintaining system efficiency, improving operational reliability, and safeguarding valuable infrastructure assets.