| Ⅰ.Choose
suitable packing style |
| Some factors will affect the choice
of packing as follow: |
| a.
Style of equipment--------pump, valve, stirrer and so
on |
| b.
Condition of equipment-------new and old status, the gap
between shaft |
|
and stuffing, the shaft running true centred or eccentric |
| c.
The physical characteristics of medium-------gas medium,
liquid medium, |
|
abrasive medium, sticky medium etc |
| d.
The chemical characteristics of medium------acidic medium,
caustic |
|
medium etc |
| e.
The temperature of medium------consider the frictional heat
between the |
|
turning shaft and the packing, the factor of
heat-transmitting properties etc |
|
f.
The
pressure of medium |
| Ⅱ.Confirm
exact packing cross section |
| Ⅲ.Calculating
the exact length of packing ring |
| Ⅳ.Cut
the packing ring exactly |
|
Usually use
45°cut |
| Ⅴ.Inserting
the packing ring into the stuffing box as graph as follows: |
 |
| Ⅵ. Press
the packing ring group out, adjust the leakage capacity up
to the |
|
acceptable level. |
|
|
