tilting disc check valve

tilting disc check valve

The TDC valves refer to the tilting disc check valves which are designed to be used in applications where rapid response required. Or it can be said that the tilting disc check valves are expected to perform the fast opening or closing.

It should be mentioned that the disc plays an important role during the whole operation. In fact, the center of gravity of disc is very close to the axis of rotation. As a result, the disc is able to open or close very quickly without damage to the body, disc or seat. Consequently, the tilting disc check valves close quickly upon flow reversal, thereby minimizing the potential for severe waterhammer.

Generally speaking, the tilting disc check valves require the more exacting design and assembly technique than other types of check valves. For example, the hinge pin is located near the disc center of gravity, minimizing sealing surface radius rotation and thus velocity. And the reduced moment arm of the disc makes it imperative that the hinge pin bushings are properly aligned and non-binding to permit smooth swinging, as well as to maintain the precise geometry required for leak tightness.

The popularity of the tilting disc check valves during the whole industrial process would result from their outstanding features either on the design or on the performance. The stability at low and pulsating flow rates and their potential for installation in both horizontal and vertical lines benefit a lot.