To install the WOODCO USA IBOP during well backflow conditions: have the release tool in place and use the release rod to push the dart into full open position (dart pushed down as far as it will go, see Figure 2). Hold the dart in open position by tightening the lock screw (See Figure 1 for illustration of parts and their relationship to one another).

Figure 2

OPEN IBOP
FOR INSTALLATION
AGAINST BACKFLOW

With the dart held in the open position, stab the IBOP  into the open pipe connection during backflow. (See Figure 3).

STAB IBOP AGAINST BACKFLOW

Make up the IBOP like any tool joint connection and tighten with tongs.

Stop any backflow through the pipe by loosening the lockscrew and allowing the dart to seat and close the IBOP.

After closure remove the complete release tool and connect another joint of pipe into the top of the IBOP.

The IBOP can function as part of the pipe string as long as well conditions require.