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NK-7000 Control Ring type Bellows Expansion Joint

NK-7000 Control Ring type Bellows Expansion Joint
NK-7000
Number Name Material
1 Bellows SS400,S25C,SUS304,316,316L
2 End Pipe SGP,STPG370,SUS304,316,316L
3 Flange SS400,S25C,SUS304,316,316L
4 Guide Flange SS400,SUS304
5 Internal Cylinder SUS304,SUS316,SUS316L
6

Strengthening Rib

SS400,SUS304
7 Control Ring FC200,SS400,SUS304
8 Tie Rod Bolt SS400,SUS304
9 Stopper SGP,SUS304
10 Set Bolt SS400
11 Intermediate Ring SS400,SUS304

Features

Our NK-7000 is composed of bellows expansion joint equipped with control ring fixed at the bottom of the bellows. The guide flange and guide rod enrich its strength, so that each peak of the bellows work in exactly the same proportion against the distortion and expanding movements.
Suitable to plumbings with high pressure or high temperature
Fluids: Air / Vapor / Water


NK-7000 Control Ring type Bellows Expansion Joint
Bore Amount of stretch
mm
Number of peaks Bowler
mm
Pitch
mm
Thickness of Plate
mm
Interplanar
mm
Maximum allowable working pressure
MPa
Spring constant
N/mm・peak
50A
(2B)
±8
15
20
30
4
7
10
14
15 17 0.6 300
350
400
500
3.0 596
65A
(3B)
±5
10
15
20
4
7
10
14
15 17 0.8 300
350
400
500
3.0 1715
80A
(3B)
±5
10
15
20
4
7
10
14
15 17 0.8 300
350
400
500
3.0 1966
100A
(4B)
±5
10
15
20
3
5
8
10
20 20 1 300
350
400
450
3.0 2222
125A
(5B)
±10
15
20
25
3
4
5
7
30 30 1.2 350
400
450
500
3.0 1434
150A
(6B)
±10
15
20
25
3
4
5
7
30 30 1.2 350
400
450
500
3.0 1655
200A
(8B)
±10
15
20
25
3
4
5
7
30 30 1.2 350
400
450
500
3.0 2087
250A
(10B)
±10
15
20
25
2
3
4
5
40 40 1.5 400
450
500
550
2.5 2148
300A
(12B)
±10
15
20
25
2
3
4
5
40 40 1.5 400
450
500
550
2.5 2504
350A
(14B)
±10
15
20
25
2
3
4
5
40 40 1.5 400
450
500
550
2.5 2763
400A
(16B)
±20
25
30
35
4
5
6
7
40 40 1.5 500
550
600
650
2.5 3119
450A
(18B)
±20
25
30
35
4
5
6
7
40 40 1.5 500
550
600
650
2.5 3371
500A
(20B)
±25
35
45
50
3
4
5
6
50 50 1.5 550
600
650
700
2.0 1944
550A
(22B)
±25
35
45
50
3
4
5
6
50 50 1.5 550
600
650
700
2.0 2127
600A
(24B)
±25
35
45
50
3
4
5
6
50 50 1.5 550
600
650
700
2.0 2310