Squeeze Tool Gap Stops

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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

1-1/4" CTS - 15

Apollo Engineering
Model ST-204

Click the Gap Stops Below to See the Range of Pipe Sizes for Each Setting

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 mils

Click 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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