Twin Flapper Check Valve
FUNCTIONALITY
Flow Control
InterventionDEPLOYMENT
SECTORS
DTI's Twin Flapper Check Valve provides a dual downhole barrier within the coiled tubing toolstring as safety critical protection against fluid back flow. It is robust, reliable, easy to redress and rated to 10,000 psi.
Two flapper cartridge sub-assemblies fit into the main valve body to provide an effective dual well barrier. The flappers have combined elastomeric/ metal seating, providing efficient low and high-pressure sealing, combined with simple redress.
All DTI’s motorheads and flapper check valves use our single-piece flapper cartridge design, pioneered at DTI and now copied throughout the industry, for ultimate reliability and reduced leak paths and easier redress.
All these cartridges are factory pressure tested and are available to suit most housings and applications.
Features
& Benefits
- Uses DTI pioneered single piece flapper cartridges for reduced leak paths and easier redress.
- Dual Barrier through two cartridge assemblies.
- Metal-to metal sealing on flapper against cartridge.
- Combined low and high-pressure sealing feature.
- Easy to redress by replacing cartridge body.
- Spare cartridges can be supplied fully assembled and tested.
- All Twin Flapper Check Valve Ultra’s are rated to 10,000 psi and 200C.
Deployment and Operation
- All DTI’s TFCV’s can be specified with a range of connections or metallurgy for a variety of applications.
- Single piece cartridge easily replaced.
- TFCV assemblies can be supplied in alterative metallurgy or coatings for extreme environments.
| Part number | OD | ID | Will pass ball | Length | Threads |
|---|---|---|---|---|---|
| TFCV125AC32 | 1.250" | 0.50" | 3/8" | 10.8” | 1.0”-10 SA |
| TFCV150AC08 | 1.500" | 0.50" | 3/8" | 8.5” | 1.00” AMMT |
| TFCV169AC08 | 1.688" | 0.75" | 5/8" | 16.4” | 1.00” AMMT |
| TFCV175AC08 | 1.750" | 0.75" | 5/8" | 13.9” | 1.00” AMMT |
| TFCV200AC09 | 2.000" | 0.89" | 3/4" | 11.8” | 1.50” AMMT |
| TFCV212AC09 | 2.125" | 0.89" | 3/4" | 18.3” | 1.50” AMMT |
| TFCV238AC09 | 2.375" | 0.89" | 3/4" | 18.3 | 1.50” AMMT |
| TFCV288AC23 | 2.875" | 1.40" | 1 1/4" | 20.5” | 2-3/8 PAC |
| TFCV312AC23 | 3.125" | 1.40" | 1 1/4" | 23.4” | 2-3/8 PAC |
