Comflex® Rubber Expansion Joints Engineering Guide

James Walker Townson PTFE Comflex ® Expansion Joint
Type 80 HD
TYPE 80 HD
Type 80 is a PTFE expansion bellows Comflex ® Expansion
Joint hot-formed from extruded PTFE tubing under pressure
to form continuous convolutions. Available with 2 to
10 convolutions for all nominal widths.
Design:
Pure PTFE bellows with external stainless steel support
rings, PTFE profiles on both sides with steel backing
flange and integral restraint.
Pressure and vacuum diagram
with temperature influence
Flange:
Material GGG 40 with rust preventive coating (hole
circle drilling partly with threaded holes, for narrow
design), standard design PN 10.
Special holes and materials available on request.
DN
2
Conv.
Overall
length
3
Conv.
+ je
Conv.*
Movement absorption
with 2 convolutions
ax +/-
lat +/-
ang +/-
Movement absorption
with 3 convolutions
ax +/-
lat +/-
ang +/-
Movement absorption
per further convolution*
ax +/-
lat +/-
ang +/-
mm
mm
mm
mm mm °
mm mm °
mm mm °
25
32
40
50
65
80
100
125
150
200
250
300
350
400
500
600
45
55
55
60
60
65
70
75
75
80
90
95
100
100
105
105
55
65
70
70
80
90
95
100
105
110
120
125
125
135
140
140
12
13
15
16
20
24
25
25
25
25
26
26
26
26
26
26
6
6
7
7
8
8
9
9
10
10
11
11
12
12
15
13
4
4
5
5
6
6
6
6
6
7
7
7
7
7
8
8
9
8
8
7
7
7
6
6
5
4
4
3
3
3
3
2
9
9
11
11
12
12
14
14
15
15
17
17
18
18
20
20
6
6
8
8
9
9
9
9
9
11
11
11
11
11
12
12
14
12
12
11
11
11
9
9
8
6
6
5
5
5
5
3
3.0
3.0
3.5
3.5
4.0
4.0
4.5
4.5
5.0
5.0
5.5
5.5
6.0
6.0
6.5
6.5
2.0
2.0
2.5
2.5
3.0
3.0
3.0
3.0
3.0
3.5
3.5
3.5
3.5
3.5
4.0
4.0
4.5
4.0
4.0
3.5
3.5
3.5
3.0
3.0
2.5
2.0
2.0
1.5
1.5
1.5
1.5
1.0
*max. 10 Convolutions
flange picture see page 64.
To order or get further details, call your local contact 47 shown on rear cover or listed at www.jameswalker.biz 47