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NK-6900 Expansion Joints (General-Purpose Type)

Product Made in Japan
Model: NK-6900

NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and other structures. They also handle conditions such as line center misalignment, vibrations, foundation subsidence and earthquakes.

Feature

This product is high-performance.
Applicable fluid: Exhaust gas Air Low pressure steam Water
Applicable bellows: MF
Material: SUS304 SUS316L SUS310S
*Please contact us for material.
Standard: JIS, ANSI, DIN

Specification

Drawing

NK-6900

Materials

① FlangeCarbon steel, Stainless Steel
② End PipeCarbon steel, Stainless Steel
③ Inner SleeveStainless Steel
④ BellowsStainless Steel
⑤ Shipping BoltCarbon steel, Stainless Steel
⑥ HolderCarbon steel, Stainless Steel

Specification table

X = Axial Movement

DNLength(mm)Resisting
pressure
X=15X=20X=30X=40Mpa
1002002503504300.3
1252002203003700.25
1502002403003500.2
2002102603003700.18
2502502503103700.19
3002502503103700.19

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