Comflex® Rubber Expansion Joints Engineering Guide

James Walker Townson Rubber Comflex ® Expansion
Joint Type 61
TYPE 61
Type 61 is a low corrugated rubber Comflex ® Expansion Joint,
characterized by its cylindrical end connections, which make
quick and easy clamp fitting possible.
Design:
Low corrugated rubber body with reinforcement inserts,
cylindrical at both ends for clamp fixing.
Application:
Waste-water piping, motor cooling systems, industrial plants,
ventilation plants, purification plants.
Details for type 61
Bellows
colour code
Core
(inner)
Reinforcing
material
Cover
(outer)
Permissible
operating data
Electrical
resistance
Hardness
shore A
bar °C
bar °C
[Ohm cm]
red/St
red
yellow/St
yellow
green
white
lilac
EPDM
EPDM
NBR
NBR
CSM
NBR/white
FKM
Steel cord
Nylon cord
Steel cord
Nylon cord
Nylon cord
Nylon cord
Aramid
EPDM
EPDM
CR
CR
CSM
CR
EPDM
6 50
6 50
6 50
6 50
6 50
6 50
6 50
3 100
4 90
4 90
4 80
4 80
4 80
2 150
7 x 10 3
7 x 10 2
5 x 10 4
5 x 10 3
4 x 10 10
5 x 10 3
60
60
60
60
65
60
65
Burst pressure >24 bar, vacuum resistant with supporting ring
Note:
Special measurements are possible. Pipeline outside diameter must be clean and
smooth (grind down any weld seams). Do not insulate or paint the bellows. Use wide
clamps (min. 20x1). Up to 2 bar, one clamp per side can be used. Above 2 bar, we
recommend the use of 2 clamps per side.
DN
Ødi
mm
Overall
length
mm
ØA
mm
s
mm
H
mm
B
mm
ax +
mm
Movement absorption
ax -
mm
lat ±
mm
∠ ±
°
Weight
kg
50
65
80
100
125
150
175
200
225
250
300
350
400
500
600
60.3
76.1
88.9
114.3
139.7
168.3
193.7
219.1
227.0
273.0
323.9
355.6
406.4
508.0
610.0
Bigger nominal width possible.
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
120
135
158
183
208
254
278
304
311
359
408
439
491
594
696
5
6
6
6
6
7
7
7
7
7
7
7
8
8
8
97
97
85
85
85
65
65
65
65
65
65
65
60
60
60
55
55
80
80
80
120
120
120
120
120
120
120
130
130
130
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
20
20
20
20
20
15
15
10
10
10
8
8
8
6
6
0.5
0.6
0.7
0.9
1.1
1.4
1.5
1.7
1.8
2.2
2.6
2.7
3.2
4.0
4.8
40
To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz