The Jamesbury KF-B-001711 valve ball (Emerson part number 001-0840-36) is the spherical sealing element used inside Jamesbury ball valves to control flow. This replacement part carries the KF-B-001711 designation within Emerson’s Jamesbury lineup and is intended for industrial valve assemblies requiring reliable shutoff. It functions by sealing against the valve seat to regulate throughput in piping systems.
