| |
| Step 1. Calculating Wall Thickness: |
To determine wall thickness we will be using Example 1 (from above).
| The Formula: |
T = |
OD
DR |
= Wall Thickness |
Now using Example 1 and the formula above we will find the wall thickness.
| Calculated Wall Thickness: |
T = |
8.625
11 |
= .784 |
|
Step 2. Finding Total Effective Piston Area |
Use Chart A (above right) to find the TEPA of your machine.
TEPA = 4.710 (we are using the No.28 as an example) |
| Step 3. Calculating Gauge Pressure |
Calculating Gauge Pressure Using the information we have gathered from above.
| The Formula |
(OD - T) x T x PI x IFP
TEPA |
+ DRAG = Gauge Pressure |
|
Step 4. Completed Formula |
Now using all the information from above, and the formula above we will find the gauge pressure.
| Calculated Gauge Pressure |
(8.625 - .784) x .784 x 3.1416 x 75
4.710 |
+ 30 PSI = |
338 PSI |
|
