- NK-6500
- NK-6800
- NK-7000／NK-7100
- NK-7300／NK-7300E
- NK-7400
- NK-7500／NK-7600
／NK-7700 - NK-7800
- NK-7900／NK-7900E
- NK-8900
- NK-9000（Single）
- NK-14000
- D-FLEX
- F-FLEX
Bellows Expansion Joint
Bellows model
NK-7400 Universal model Bellows Expansion Joints
| 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 | Intermediate Pipe | SGP,STPG370,SUS304,316,316L |
| 5 | Guide Flange | SS400,SUS304 |
| 6 | Neck Ring | SS400,SUS304 |
| 7 | middle instruction | SS400,SUS304 |
| 8 | Control Ring | FC200,SS400,SUS304 |
| 9 | Spherical Washer | SS400,SUS304 |
| 10 | Tie Rod Bolt | SS400,SUS304 |
| 11 | Holder | SS400,SUS304 |
| 12 | Strengthening Rib | SS400,SUS304 |
| 13 | Set Bolt | SS400,SUS304 |
| 14 | Stopper | SS400,SUS304 |
Features
It's possible for Unviersal type to abosorb both axially vertical displacement
and axially horizontal expansion-contraction simultaneously.
The edges of the two bellows totally absorb the horizontal expansion-contraction, and
the vertical displacement is absorbed by the displacement of bellows and the length of
intermediate pipe.
On the plumbings without horizontal displacement, the thrust caused by inner pressure
can be controlled by adjusting the length, which gives no force to anchor chock.
