Dual Drop Ball / Rupture Plug Circulation Valve

The DTI CV Dual Action combines the drop ball and rupture plug circulation features into one tool. It allows the circulation of fluid through the CT tool under normal operating conditions. By increasing CT pressure to a predetermined value, the rupture plug will blow out, thereby opening a flow path from the tool string to the well, below the drop ball sleeve. This leaves the tool string I.D. clear for a drop ball to seat on the main circulation valve in order to achieve full circulation from the CT tool string to the well through the flow ports.