Expansion Joints / Expansion Bellows & Flexible Connectors
PTFE lined stailess steel expansion joints
Ethylene offers several special Flexijoint and Flexarmor expansion joint configurations including:
Universal Expansion Joints
These units combine two Flexijoints with an intermediate PTFE lined spool piece: lateral movements are maximized to provide low spring rates; critical when mating to stress-sensitive graphite, FRP, glass, etc. process equipment.
Hinged or Pinned & Slotted Joints
The hinged connection between the flanges provide lateral support while allowing only angular movement of the bellows. Pinned and slotted units provide angular and axial movements with lateral support.
Gimbal Joints
Allows full angular freedom while limiting axial and lateral displacements.
Special pieces of specific or non standard size can be manufactured on request.
Nominal Diameter (mm/in. ): DN15-DN1600
Convolutions: 3 to 6
Working pressure: 0.6MPA to 1.6Mpa
Fatigue frequency: Above 5000 times
Operating temperature: Below 200degree
| PTFE Teflon linded Stainless steel expansion joints |
|
|
|
|
| Nominal diameter |
Convolution |
Length (mm) |
Axial (mm) |
Lateral (mm) |
Angular (degree) |
Negative pressure |
Pressure (Mpa) |
| DN(mm) |
NPS(inch) |
| DN15 |
1/2 |
3 |
70 |
8 |
6 |
20 |
-0.1 |
0.4 |
| DN20 |
3/4 |
3 |
70 |
10 |
6 |
20 |
-0.1 |
0.4 |
| DN25 |
1 |
3 |
80 |
12 |
8 |
20 |
-0.1 |
0.3 |
| DN32 |
1 1/4 |
3 |
80 |
14 |
12 |
20 |
-0.1 |
0.3 |
| DN40 |
1 1/2 |
3 |
85 |
17 |
15 |
25 |
-0.1 |
0.3 |
| DN50 |
2 |
3 |
95 |
20 |
20 |
25 |
-0.1 |
0.2 |
| DN65 |
2 1/2 |
3 |
110 |
22 |
23 |
30 |
-0.1 |
0.2 |
| DN80 |
3 |
3 |
115 |
24 |
24 |
30 |
-0.1 |
0.2 |
| DN100 |
4 |
3 |
120 |
26 |
25 |
30 |
-0.1 |
0.1 |
| DN125 |
5 |
3 |
130 |
29 |
25 |
30 |
-0.1 |
0.1 |
| DN150 |
6 |
3 |
140 |
32 |
20 |
25 |
-0.1 |
0.1 |
| DN200 |
8 |
3 |
150 |
40 |
20 |
25 |
-0.1 |
0.06 |
| DN250 |
10 |
3 |
160 |
40 |
12 |
15 |
-0.1 |
0.06 |
| DN300 |
12 |
3 |
180 |
40 |
12 |
10 |
-0.1 |
0.06 |
| 
