Product Details

Metal Expansion Bellows

Features of Expansion Bellows:

a. good flexibility.

b. Can produce axial deformation and transverse and Angle to the displacement.

c. used for chemical industry, smelting ,water supply ,dewatering structure and so on .

1.Designing temperature:-20-+400deg

2.DN:32-1000mm

3.Working Pressure(MPa):0.25-2.5

Main connection sizes of Expansion Bellows:

Nominal diameter (mm)	type			compensation length(mm)			toughness(N/mm)			Active area (cm²)	Maximum diameter (B)(mm)	The size of connection end (Φ×s)	protective casing externial size (D₁) (mm)	Total length(L)mm
				Axial X.	Horizonal Y.	angular θ./temperature	Axial K_X	horizonal K_Y	angular KQ N-m/temperature					flange	connection tube
32	QM JZ	BW1.0/32×8	J F	7			441			16		Φ38×3.5	186		280
				7	1.28	±4	441	774	2		225			164
	QM JZ	BW1.0/32×16	J F	14			220			16			186		321
				14	5.1	±8	221	97	1		225			216
40	QM JZ	BW1.0/40×8	J F	10			317			23		Φ45×3.5	224		289
				10	1.5	±4	318	696	2		244			219
	QM JZ	BW1.0/40×16	J F	19			158			23			224		334
				19	6.1	±8	158	87	1		244			219

Details of Expansion Bellows:

Our factory of Expansion Bellows:

Translation of Expansion Bellows:

Installation Instruction of Expansion Bellows:

I. Installation over displacement limit is not allowed when installing the flexible compound rubber joint .

II. For ground-horizontally ,suspense and vertically installed rubber joints with over 1.0Mpa pressure,both sides of the pipeline shall have support or support bracket,to avoid fall or damage.

III.The force of fixing support or bracket shall be greater than the axial force of working.Otherwise the anti-fall devise is required .

IV. It shall install the GB/T9115.1(RF) standard flange(small diameter flange) when installing the corresponding flange of flexible compound rubber joints.The size of flange D2 and do shall not be too small for preventing the leakage of sealing face.

V. It shall screw down symmetrically and gradually when installing the flange screw of flexible compound rubber joint,To avoid the partly leakage or damaging the sealing face of the rubber joint.

VI. When the rubber joint is installed vertically or in suspense with over 1.0Mpa pressure ,the screw shall be installed with gasket for preventing partly leakage due to loosened screw.

VII.The flexible compound rubber joint shall have fixing support when vertical installation is made .Heavy press on the rubber joint is forbidden .

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