Arrow Back Pressure Valve is an integrated tool which can prevent downhole kick from blowout,also keep off the blowout accident. Thus reducing mud loss and ensuring a clean rig floor. Compared with the other back pressure calves, it possesssed the advantage of high strength,high pressure-resistant,safety and reliable,etc.
The tool should be connected to drilling position needed in operation.Under normal drilling condition, drilling liquid pass through valve body and water channel to furnish downward.When well kick and blowout incured, underground pressure impel valve body to move upward 14°pyramidal face of valve body is fitted tightly against gasket pyramidal face,they can prevent drilling liquid within the drilling from gushing and blowout upward.
