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Double Arch Rubber Joint

    Place of Origin: China

Product Description

Double Arch Rubber Joint
Double arch rubber joints, also known as double sphere rubber joints, are designed for piping systems to absorb pipe movements, relieve stress, reduce system noise/vibration, compensate for misalignment/offset and to protect rotating mechanical equipment against start-up surge forces.

Features and Benifits
·Absorbs directional movement
·Absorbs vibration, noise and shock
·Compensates for misalignment
·Double arch design, more flexibility
·Economical fully molded construction
·Special grooved flange ring design, prevent rubber end pulling out
·Solid galvanized steel floating flanges speed the installation time
·No gaskets required; integrally rubber flanged design

Specifications

Nominal diameter:
DN25mm to DN1000mm
Maximum working pressure:
2.5 Mpa
Vacuum KPa(mmHg)
44.9(350)
Operating temperature:
-20℃-100℃
Corrosion resistance
Good
Applicable media
Sea water, drinking water, slurry, industrial sewage.

Components/Materials/Functions

NO.
Components
Materials
Functions
1
Rubber Bellows
EPDM/NR/NBR
Body
2
Ring Flange
Carbon Steel
Fasten
3
Steel Ring
Mild Steel
Reinforce
4
Tire Cord
Nylon
Reinforce
5
Arch Design
EPDM/NR/NBR
Reduce turbulence
6
Holding-on Design
/
Prevent Pulling Out


SIZE
LENGTH
MAX
VACUUM
Movement Capability(mm)
Flange details-DIN PN16
Prox.
I.D.
F/F
Pressure
Rating
Comp.
Ext.
Lateral
Angular
Torsional
O.D.
B.C.
Holes
Hole
TH.
Weight
(mm)
(mm)
(bar)
(mm Hg)
(mm)
(mm)
(mm)
(degree)
(degree)
(mm)
(mm)
(no.)
(mm)
(mm)
(kg)
40
175
16
760
50
30
45
35
10
150
110
4
18
14
3
50
175
16
760
50
30
45
35
9.5
165
125
4
18
14
4
65
175
16
760
50
30
45
35
7.5
185
145
4
18
15
5
80
175
16
760
50
30
45
35
6.2
200
160
8
18
15
7
100
225
16
760
50
35
40
35
5.6
220
180
8
18
15
9
125
225
16
760
50
35
40
35
4.5
250
210
8
18
15
11
150
225
16
760
50
35
40
35
3.6
285
240
8
23
20
14
200
325
16
700
50
35
35
30
2.8
340
295
12
23
20
21
250
325
16
700
60
35
35
30
2.2
405
355
12
26
20
30
300
325
16
700
60
35
35
30
1.8
460
410
12
26
22
37
350
325
10
700
60
35
35
30
1.7
520
470
16
26
22
53
400
325
10
600
60
35
35
30
1.5
580
525
16
30
22
69
450
325
10
600
60
35
35
30
1.3
640
585
20
30
25
81
500
325
10
600
60
35
35
30
1
715
650
20
34
25
111
600
325
10
600
60
35
35
30
1
840
770
20
36
25
156

NOTES:
1. Control units must be used when piping is not properly anchored.
2. The rated pressure 2.5MPa products will only be sold with control units.
3. Pressure rating is based on 30℃ operating temperature. The pressure rating is reduced at higher temperatures.
4. Weights in the above table are joints with DIN PN16 drilling retaining ring flanges.
5. Movements shown in the above table are non-concurrent.
6. Rated pressure in the above table is the maximum "working pressure". Test pressure is 1.5 times "working pressure", Burst pressure is 4 times " work pressure".
7. Normally, the flange drilling is based on DIN PN16, ANSI 150/250/300 lbs, BS PN10, JIS 10K are also available upon request.


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