McCalc® Fusion Pressure Calculator
Use McElroy's fusion pressure calculator to quickly find the right fusion pressure for your job. To properly fuse pipe the fusion pressure must be adjusted so the pipe manufacturers recommended interfacial pressure is achieved.
We have several convenient ways to calculate fusion pressure. You can use our online tool below, download the Fusion Pressure Calculator App for your mobile device, or order a sliding calculator.
Wondering how it all works? Learn how to calculate fusion pressure.
McCalc Mobile App
Always have a fusion pressure calculator with you no matter where you are.
Learn To Calculate Fusion Pressure
Example
Using a 28 Machine from Chart A (at right) we will determine our gauge pressure.
Pipe Size =
8" IPS
OD
of Pipe =
8.625
DR
of Pipe =
11
IFP =
75 PSI
Measured Drag =
30 PSI
Variable Definitions
OD =
Outside diameter
T =
Wall thickness
PI = 3.1416
DR =
Dimensional ratio
IFP =
Manufacturers recommended interfacial pressure
TEPA =
Total effective piston area
DRAG =
Force required to move pipe
Total effective piston area
Model |
High Force Standard |
Medium Force High Velocity |
Low Force Extra High Velocity |
28 |
4.71 |
NA |
1.67 |
412 |
11.78 |
6.01 |
3.14 |
618 |
11.78 |
6.01 |
3.14 |
500 |
NA |
6.01 |
NA |
824 |
29.44 |
15.32 |
9.45 |
1236 |
29.44 |
15.32 |
9.45 |
900 |
NA |
15.32 |
NA |
1648 |
31.42 |
14.14 |
NA |
2065 |
31.42 |
NA |
NA |
Step 1. - Calculating Wall Thickness:
To determine wall thickness we will be using the Example (above).
T = |
OD
DR |
= Wall thickness |
Now the Example and the formula above we will calculate the wall thickness.
Step 2. - Finding Total Effective Piston Area
Use Chart A (above) to find the TEPA of your machine.
TEPA = 4.710 (we are using the 28 as an example)
Step 3. - Calculating Gauge Pressure
Using the information we have gathered from above.
(OD - T) x T x PI x IFP
TEPA |
+ DRAG = Gauge Pressure |
Step 4. - Completed Formula
Now using all the information and the formula above we will find the gauge pressure.
(8.625 - .784) x .784 x 3.1416 x 75
4.710 |
+ 30 PSI = |
338 PSI |