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Get Acrobat Reader You will need Acrobat Reader to view pdf CONQUEST® CUTBACKS

CUTBACKS serve to expose about 3/8" of plastic liner to enable subsequent butt-welding of the liner. Cutbacks may be made with various tools, including the common RIDGID Roller cutter. Adherence to the following procedures is CRITICAL when using the RIDGID roller cutter to prevent damaging the liner. Follow these 5 steps:

1. MARK HANDLE - Put tape on one end of the feed handle before starting in order     to keep track of handle rotations.

2. SNUG CUTTER - Snug up the cutter on pipe by using the knurls on feed handle shaft. DO NOT use the T-handle. (This lessens the chance of over tightening the starting point.) With the cutter snug, the taped end of the feed handle is the reference or starting point.

3. PRELIMINARY CUTTING - Begin cutting by gradually tightening the cutter with the Tee Handle, while rotating the cutter about the pipe. At first, speed of cut is not critical, because there is little risk of damaging the liner. Rotate the cutter about the pipe while advancing the cutter blade by tightening the tee handle. Keep track of tee handle rotations, and STOP once reaching total rotations indicated in the chart below:

IMPORTANT NOTE: Rotating the Tee Handle advances the cutter blade into the steel. Precise control of Tee Handle rotation is IMPERATIVE. Rotation of the roller cutter about the pipe affects the speed of cutting and is not important until the final stages of cutting.
Size Full Turns Partial Turns
1 1/2"

4. FINAL CUTTING - Final cutting is critical to prevent damaging of the liner. Advancement of the cutter blade must be much slower to prevent "ploughing" the steel into the liner. Advance the cutter blade by rotating the Tee Handle 22°, then make 3 rotations of the cutter about the pipe. Repeat this process 8 times, until a total of one half rotation of the Tee Handle has been reached.

  x 8 =

5. REMOVE RING - After the cut has been made, remove the ring with a hammer and cold chisel. After the ring has been removed inspect the ring to make sure that the sharp edge is parallel to the liner, not pushed into it. See below.

Acceptable cut

Unacceptable cut

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