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A. Big Tap Saddle or welded nozzle is installed, the valve installed, tap assembly pressure tested and tapping machine attached.
B. Valve opened, big tap completed, coupon or cut portion retained by retainer wires on the pilot drill. Pressure is contained within the tapping machine.
C. Cutter and coupon retracted and valve closed. Fluid is drained and tapping machine is removed. The tapped valve is now ready for the contractor’s tie-in or IFT’s line stopping equipment to be assembled and inserted.
Typical Tapping Angles: Straight Tap, Angle Tap and Elbow Tap