The Double Flapper Check Valve is a one-way valve designed specifically for coiled tubing operations. It is used to prevent wellbore fluids from backflowing into the coiled tubing, ensuring operational safety and stability. Its double-flapper design, combined with a high-performance sealing system, provides reliable one-way sealing even in high-temperature and high-pressure well conditions. It is widely used in operations such as acidizing, fracturing, and downhole fluid control.
Product Features
Insertable Sealed Valve Body, Easy for Maintenance: The compact structure and removable valve body design allow for quick replacement or repair, improving operational efficiency.
Two-Stage Independent Sealing System, More Reliable Sealing Performance: The dual-layer sealing design ensures reliable one-way sealing even in high-pressure environments, enhancing safety.
Large Bore Design, Allows Passage of Tools like Steel Balls: Strong compatibility allows downhole equipment such as steel balls and drop-balls to pass through smoothly, ensuring operational continuity.
Replaceable Valve Assembly, Reduces Usage Costs: The modular component design eliminates the need to replace the entire valve body, effectively reducing long-term usage costs and improving economic efficiency.

OD in | Length in | ID in | Press. psi | Tensile Strength klbs | Torsional Strength ft-lb | Connection |
1.5 | 12.17 | 0.63 | 10000 | 49 | 1106 | 1 AMT |
1.69 | 12.17 | 0.67 | 10000 | 54 | 1180 | 1 AMT |
2.125 | 13.58 | 0.94 | 10000 | 79 | 1696 | 1 1/2 AMT |
2.375 | 13.58 | 0.94 | 10000 | 83 | 1770 | 1 1/2 AMT |
2.875 | 18.15 | 1.26 | 10000 | 108 | 2950 | 2 3/8 PAC |
79 | 18.15 | 1.38 | 10000 | 110 | 3024 | 2 3/8 PAC |