A method and apparatus for stopping oil flowing from the end of a ruptured pipe, by mounting a flange on the end of the ruptured, if a flange is not already present; providing a gate valve having a flange on its lower end to mate with the flange on the ruptured pipe; providing a permanently affixed gasket member on the mounting flange of the gate valve; lowering the gate valve to the depth of the flowing oil from the ruptured pipe; providing at least two flexible bolts through opposite openings in the flange of the gate valve; threading each flexible bolt through two opposite openings in the flange of the ruptured pipe; placing pulling pressure on the lower ends of the two flexible bolts to pull the gate valve from a position adjacent the ruptured pipe to a second position where the gasket of the gate valve mounts against the face of the flange of the ruptured pipe, while the gate valve is in the open position; continuing to hold the gate valve in place by the flexible bolts while inserting permanent bolts in the remaining openings of the mated flanges to secure the gate valve permanently in place; and closing the gate valve to stop the flow of oil.