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Individual Gap Stop Ranges
Complete Summary of Gap Stops
How to Select Gap Stop Settings
for
Apollo ST Series Squeeze Tools
As shown in the illustration on the right, the outer end of each
lower jaw is die stamped with gap stop numbers which indicate the
actual gap stop for each corresponding
face on the jaw. The numbers show the gap stop measured in mils or
thousandths of an inch.
For example,
the gap stop stamped as 375 represents an actual
gap stop of 375 mils or 0.375" for that face of the jaw.
Affixed to the frame of the tool is a schedule for the gap stop numbers that are stamped on the end of the lower jaw. This schedule lists all of the various pipe sizes which may be properly squeezed by each particular gap stop setting.
Squeeze Tool Illustration With
375, 290, 250 & 155 mil Stops
Squeeze Off
Schedule
Shown on the Right
| 375 mils |
| 1" IPS - 6 |
| 1-1/4" IPS - 6 |
| 2" IPS - 11 |
| 3" IPS - S40 |
| 4" IPS - S40 |
| 290 mils |
| 1-1/4" IPS - 10 |
| 1-1/2" IPS - 11 |
| 1-1/4" IPS - 9.3 |
| 250 mils |
| 1" IPS - 9.3 |
| 1-1/4" CTS - 9.3 |
| 1-1/4" IPS - 11 |
| 1-1/4" IPS - S40 |
| 1-1/2" IPS - S40 |
| 2" IPS - S40 |
| 155 mils |
| 1/2" CTS - 7 |
| 1/2" IPS - 9.3 |
| 3/4" CTS - 9.7 |
| 3/4" IPS - 11 |
| 1" CTS - 12.5 |
| 1" CTS - 11.5 |
| 1" CTS - 11.5 |
| 1" CTS - 11 |
| 1-1/4" CTS - 15 |
|
Apollo Engineering Model ST-204 |
110 mils 125 mils 155 mils 170 mils 188 mils 215 mils 250 mils
290 mils 375 mils 450 mils 500 mils 562 mils
670 mils 750 milsClick Here for a Complete Summary of Gap Stops
What to do if your pipe
is not listed on the schedule or if the schedule is illegible ...
Step 1
Determine
the wall thickness of the pipe that you working with.
Step 2
Multiply
twice the wall thickness by 0.70 to determine the maximum allowable squeeze
gap.
Step 3
Multiply twice the wall thickness by 0.90 to determine the minimum required
squeeze gap.
Step 4 Select
the gap stop stamped on the jaw which is between the minimum and maximum computed gaps.
Example: Select the gap stop to use for 2" IPS/SDR-11 Pipe
Step 1 Compute wall thickness 2.375 ÷ 11 = 0.216"
Step 2 Compute max. squeeze 0.216 x 2 x 0.70 = 0.302"
Step 3 Compute min. squeeze 0.216 x 2 x 0.90 = 0.388"
Step 4 Select the 375 mil gap stop for this squeeze off operation.
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