Check valves are essential in preventing the reversal of flow in piping systems. These valves function automatically, opening when fluid pressure flows in the intended direction and closing if the flow reverses. The closure mechanism can involve back pressure, gravity, a spring, or a combination of these forces. Common types include swing, piston, butterfly, stop, and tilting disk check valves.

The tilting disk check valve shares similarities with the swing check valve, with both offering low fluid resistance and minimal turbulence thanks to their straight-through design. However, the tilting disk design provides additional flexibility and improved performance.

Tilting disk check valves can be installed in horizontal or vertical pipelines with upward flow. Some models are designed to fit between two flange faces, making them a compact and lightweight solution for larger-diameter pipelines. These valves operate by having the disk lift off the seat as fluid flows through. The airfoil-shaped disk reduces flow resistance by “floating” on the fluid, optimizing performance.

Built-in disk stops within the valve body ensure proper disk alignment for optimal flow. The large body cavity of the valve minimizes flow restriction. As the flow slows, the disk gradually returns to its seat, sealing the valve to prevent reverse flow. For additional reliability, back pressure moves the disk into a soft seal before settling into the metal seat, ensuring a tight shutoff without slamming. In cases where back pressure alone is insufficient, the valve can be equipped with an external lever and weight to guarantee complete closure.