Product Description

The arrow-shaped check valve is one of inner blowout prevent tools that are commonly used in gas drill and repairing well, and is a kind of in-string blowout prevent back pressure valve accompanying the drill entering well,once well-leakage and well blowout happen, it can automatically and quickly shut the bore of valve by the upper inverse circulation pressure and plug the waterway of string so as to avoid the blowout and ensure the safety of drilling equipment and person-life.