• Flow Activated Bow Spring Centralizer


    The flow-activated bow spring centralizer is designed so that the bow springs are normally retracted.

    The bow springs only expand when a pressure differential is achieved across the tool. This enables the centralizer to pass through restricted spaces, such as the bores of the tail pipe, and then expand out into larger spaces without any unnecessary wear on the bow springs.

    As a safety precaution, the bow springs are mounted above a coil spring. This is to allow the bow springs the movement they require in order to pass through a restricted bore while still expanded.



    • Full flow through bore

    • Allows bow springs movement when meeting restrictions in expanded condition, therefore preventing bow spring damage


    When ordering Flow Activated Bow Spring Centralizers please specify:

    • Size
    • Thread connection