- 1). Turn off the water supply from the main water source.
- 2). Locate the water line for the toilet closest to the supply line.
- 3). Lay old towels on the floor to catch water that will leak from the pipe.
- 4). Find a location on the water line where the water hammer arrestor will fit with clearance for the baffle. Hold the water hammer arrestor next to the section of pipe with adequate clearance. Use a marker to make a cutting mark on the water line that corresponds with the base of the fitting connections. Do not include the area where the pipes will seat into the fitting.
- 5). Place a bucket on the floor under the section of pipe that will be cut. Cut the pipe on each mark with a pipe cutter or hacksaw. Raise the bucket after the first cut to catch the water as it drains out of the water line.
- 6). Smooth any rough edges on the cut pipes with emery cloth.
- 7). Align the water hammer arrestor between the two sides of the water line. Press the pipes into the water hammer arrestor fitting connections. Press firmly so the end of the pipe is as far as it can go into the fitting connection.
- 8). Turn the water supply back on. Flush the toilet and listen for the banging noise. If it is gone, the project is complete. In some cases, a second water hammer arrestor will need to be installed on the main water line.
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