The Flapper Check Valve is connected to the coiled tubing to eliminate flow back of fluids or gas through the tubing string. The spring loaded flapper valve provides maximum flow area, while providing high performance sealing capability. The Flapper Check Valve is frequently run on drilling motor tool strings for workover and completion operations. The Flapper Check Valve provides safe operation when running coiled tubing into high-volume, high-pressure, or H2S environments.