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Perforator User Guide

Perforator parts listed

Assembly

 

 

Step 1.

Place gasket over holes.

 

 

 

 

 

Step 2.

Insert piston into cylinder with the shallow chamfered end facing outward. There are no O-rings on the piston

 

 

 

Step 3.

With piston in cylinder, position cylinder over gasket and bolt it to the perforator body with a 2 3/8" x 1" allen head cap screw.

Steps 1, 2, 3
Steps 4 and 5

 

 

 

 

Step 4.

Slide chrome rod through spring with a washer on each side of the spring. Install the rod through the cylinder and piston.

 

 

 

 

 

Step 5.

Place the stop tube between the piston and the yoke.

 

NOTE: Without the stop tube, the piston cannot push the yoke out.

 

 

 

 

Step 6.

Screw the chrome rod into the yoke, with the chamfered side of the yoke facing down.

 

 

 

 

 

 

 

Step 7.

Place cutter wheel into perforator body and slide axle pin through cutter wheel.

Steps 6 and 7
Steps 8 and 9

 

 

 

 

Step 8.

Slide cutter wheel and axle pin up into yoke. Insert axle pin bolt through yoke and tighten.

 

 

 

 

 

 

 

Step 9.

Photo of perforator body assembly complete.

Quick Test

 

 

 

Step 10.

Tighten spring-loaded rod with a 3/4" wrench.

 

After tightening chrome rod, push assembly through entire stroke to insure there is no binding.

 

 

 

 

 

 

Step 11.

Place the protective housing over the cylinder and rod. This is tightened hand tight or slightly snugged with a wrench.

Steps 10 and 11
Step 12

Step 12.

The pop-off valve is installed as one unit by thread it into the lower housing.

 

 

Adapter Shoe

 

 

 

Adapter Shoes

 

 

Adapter shoes are available to allow the 6" perforator to perforate up to 12" pipe. Larger perforators cut up to 26" pipe.

 

 

 

 

 

Adapters slide onto the back of the perforator body and bolt to the holes, which line up the sides of the perforator.

Adapter Shoe

Operating Hints

Air Pressure - Air or water pressure of at least 40 PSI is required to set the wheel into the cutting position. When the perforator is under water, you must add air or water to equal the pressure outside the perforator plus at least 40 PSI. Using more pressure does not cause a problem. The perforator pop-off or developing valve opens at approximately 80 to 90 PSI. Down pressure on the drill pipe makes the wheel rotate and punch holes.

Perforator Orientation - Perforations are made when the tool is moving downward from top to bottom.

Perforations - As a general rule, 3 to 4 columns of perforations are recommended for 6" to 8" pipe. For 10" to 12" pipe, 6 to 8 columns of perforations are recommended.

Travel Stops - Travel stops are attached to the perforator body to restrict the reach of the wheel. For casing thinner than .250" remove the travel stops. This allows the wheel to extend out of the perforator further for thinner walled casing.

Cutter Wheels - Remember to retract the cutter wheel before rotating. Frequently inspect the cutter wheel for wear. Inspect for excessive wear between blade and axle pin. Use PVC cutter wheels when perforating PVC pipe.