NK-7500・7700

Outer-cylinder type

Feature

This product wraps a bellows in an inner cylinder and an outer cylinder, and has a structure that does not carry out compression buckling that if it’s big axial move.
NK-7500 is Single bellows NK-7700 is Double bellows
Applicable fluid: Steam, Exhaust gas, Water, Air
Applicable bellows: MF, HF
Material: SUS304, SUS316L,
*Please contact us for material.
Standard: JIS, ANSI, DIN

NK-7500

NK-7700

materials

①Bellows Stainless Steel
②Inner Sleeve Stainless Steel
③Outer Cylinder Carbon steel, Stainless Steel
④End Pipe Carbon steel, Stainless Steel
⑤Flange Carbon steel, Stainless Steel
⑥Neck Ring Carbon steel, Stainless Steel
⑦Middle Ring Carbon steel, Stainless Steel
⑧Tie Rod Carbon steel, Stainless Steel
⑨Holder Carbon steel, Stainless Steel

View Steel Types

Specification table

X=Axial Movement

DN Length(mm)
X=30 X=40 X=50 X=60 X=80 X=100
50 560 690 820 960 1370 1630
65 450 540 640 730 1070 1260
80 600 720 820 900 1330 1550
100 560 680 800 900 1320 1550
125 500 560 650 710 860 1380
150 500 560 650 710 860 1380
200 520 580 670 710 860 1380
250 520 580 670 710 860 1380
300 520 580 670 710 860 1380
350 520 580 680 780 1020 1200
400 520 580 680 780 1020 1200
450 540 600 700 800 1030 1230
500 520 590 660 730 870 1160