Twin Flapper Check Valve with Lock-Out Sleeve

Prevent the backflow of well fluids into the coiled tubing while adding increased safety to your operations.

Render of Twin Flapper Check Valve
Description

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 prevents the backflow 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 nonstick 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 before pulling the string from the well.

When ordering the twin flapper check valves with lock-out sleeve, please specify size and thread connection.

Features/Benefits

  • Dual sealing in each flapper cartridge (low-pressure nonstick seat/seal and high-pressure full metal-to-metal seat/seal)
  • Full-bore fluid passage for balls, darts, and plugs
  • Removable flapper cartridges
Resources
  • TerraTECH Coiled Tubing Tools Brochure

  • TerraLINK Coiled Tubing Connectors Data Summary