• Twin Flapper Check Valve with Lock-Out Sleeve


    The twin flapper check valve with lock-out sleeve is a coiled tubing string component that can be run in the locked out position and activated with a drop ball when required to perform as a downhole safety barrier. It provides a means of preventing the back flow of well fluids into the coiled tubing.

    The design of the twin flapper check valve incorporates a dual sealing system in each flapper assembly for increased safety. A non-stick seat provides the primary low pressure seal, while at higher pressure the flapper seals into a metal to metal arrangement.

    This valve is ideally suited to CT velocity string systems, allowing activation by a drop ball prior to pulling the string from the well.




    • Dual sealing in each flapper cartridge (low pressure non-stick seat/seal and high pressure full metal to metal seat/seal)

    • Full bore fluid passage for balls, darts & plugs

    • Removable flapper cartridges

    • Simple drop ball activation



      When ordering Twin Flapper Check Valves with Lock-Out Sleeve please specify:

      • Size
      • Thread connection