KLN offers a complete range of check valves with a heavy-duty bolted cover, a renewable seat ring, and a body-mounted disc swing type. Valves are straight-through flow, which works automatically. They are opened by the force of velocity pressure and closed by the force of gravity and back pressure. The valves control single-direction flow and restrain flow in the opposite direction. Distortion, wear, and noisy operation of the valve can be avoided by selecting the size of the valve on the basis of flow conditions. Flow directions are marked as cast on the body for ease of installation. Swing Check valves are adequate for all service media. Valves can also be supplied with counter weights and dash pot arrangements, depending on the condition and request.