Stainless steel flange double ball rubber joint



Reducing Fatigue Coefficient:

In view of the inherent characteristics of natural and synthetic elastomers, due to the steel and rubber interfaces of joints and flanges, they will not suffer from fatigue damage or embrittlement, and can prevent any electrolysis.


Excellent wear and corrosion resistance:

A wide range of natural, synthetic and special purpose elastomers and fabrics can be used by the industry. Processing and assembling of materials to meet various actual pressure/temperature operating conditions, corrosive erosion, wear and erosion.


Minimum Face-to-Face Size while Absorbing Large Motion:

Double ball rubber expansion joints have the smallest face-to-face length, providing excellent movement in the direction of axial compression, axial extension and lateral deflection, as well as in the direction of angle and torsion.


Due to the inherent flexibility of rubber, spring stiffness is low:

The inherent flexibility of double ball rubber expansion joints allows almost unlimited bending to recover from the imposed motion, requiring relatively small forces to move, thereby preventing damage to power equipment.

Nominal Diameter(DN)		Length L	Diameter of the centralring of the bolt	Hole diameter quantitvd	Axial displacement		Horizontal Isplacement	Angular deflection
mm	inch	mm	mm		Extension	Compression	mm	(a1+a2)
40	1½	165	110	18-4	30	50	45	35º
50	2	165	125	18-4	30	50	45	35º
65	2½	175	145	18-4	30	50	45	35º
80	3	175	160	18-8	35	50	45	35º
100	4	225	180	18-8	35	50	40	35º
125	5	225	210	18-8	35	50	40	35º
150	6	225	240	22-8	35	50	40	35º
200	8	325	295	22-8	35	50	40	35º
250	10	325	350	22-12	35	60	35	30
300	12	325	400	22-12	35	60	35	30
350	14	330	460	22-16	35	60	35	30
400	16	330	515	26-16	35	60	35	30
450	18	330	565	26-20	35	60	35	30
500	20	350	620	26-20	35	60	35	30
600	24	350	725	30-20	35	60	35	30
700	28	350	840	30-24	35	60	35	30
800	32	400	950	30-34	35	60	35	30

NOTES:

Flange is available with DIN Standard,ANSI Standard,JIS Standard,and BS Standard.
Please sent us letter and drawing for customization if you have special requirements.
If this product is used for supplying water for high place, anti-pull-off device should be installed if the pipe has or fixed bracket is not as no fixed stay or fixed bracket or the force of fixed bracket is not large than axial force.

Flexible rubber joints shall not exceed the displacement limit during installation.
In the installation of bolts to be symmetrical, to gradually pressure and tighten, to prevent partial leakage.
When the rubber joint is laid flat, suspended, and vertically installed, the actual working axial displacement pressure of the rubber joint should be less than the supporting force of the pipeline, otherwise the anti-lifting device should be installed to prevent the work from being pulled.
The installation location of the rubber joint should be kept away from the heat source and ozone area. It is strictly forbidden to irradiate with strong radiation, expose to the sun and use the medium that does not meet the requirements of this product.
When the rubber joint is transported, loaded, unloaded or installed, it is strictly forbidden to sharpen the surface sealing surface.
When installing DN200mm or above, please use butterfly valve special flange or small diameter flange for mating flange, so as to avoid flange pull-out, misalignment, sealing surface fracturing and water leakage after installation.