Keckley double disc check valves offer a short face-to-face dimension, are lighter in weight than full body check valves, and are double disc spring loaded to provide a low cracking pressure. The design of the tension spring performs a lifting motion on the disc to prevent excessive wear on the “heel” area of the elastomer seat. The independent, dual shaft design allows interchangeability of shafts. The stop shaft stabilizes the discs during high flow rates.

Keckley wafer double disc check valves are used in both horizontal and vertical (upward) flow applications. For horizontal flow applications, the shaft should be vertically oriented to the pipeline. For vertical (upward) applications, the shaft should be perpendicular to the piping.

Keckley double disc check valves are normally stocked and available to ship immediately with Buna-n, Viton, EPDM, and metal seats. The standard discs furnished in all units are stainless steel.

Keckley double disc check valves are field serviceable without the need for special tools. Keckley double disc check valves are designed to ASME specifications and conform to API 594 & 6D. Keckley double disc check valves are tested to API 598 standards.