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.

NK-6900

Materials

① Flange	Carbon steel, Stainless Steel
② End Pipe	Carbon steel, Stainless Steel
③ Inner Sleeve	Stainless Steel
④ Bellows	Stainless Steel
⑤ Shipping Bolt	Carbon steel, Stainless Steel
⑥ Holder	Carbon steel, Stainless Steel

Specification table

X = Axial Movement

DN	Length(mm)				Resisting pressure
	X=15	X=20	X=30	X=40	Mpa
100	200	250	350	430	0.3
125	200	220	300	370	0.25
150	200	240	300	350	0.2
200	210	260	300	370	0.18
250	250	250	310	370	0.19
300	250	250	310	370	0.19