Single Sphere Rubber Expansion Joint

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Single Sphere Rubber Expansion Joint

Single sphere rubber expansion joint is mainly used for reducing vibration, noise, good flexibility and easy to use.Single sphere rubber expansion join, also known as single ball rubber joint, rubber expansion joint, single ball connector , shock absorber, pipeline shock absorber, is a kind of pipeline joint with high elasticity, high air tightness, medium resistance and climate resistance.

Features

Absorb vibration, reduce noise, high pressure resistance, good elasticity, large displacement, balance pipe deviation, easy installation

DIAMETER: DN32mm-DN3000mm
PRESSURE: 0.6-2.5 MPa
APPLICABLE MEDIA: acid, alkali, corrosion, oil, hot water, cold water, compressed air, compressed natural gas, etc.
MATERIAL: NR, EPDM, NBR, KFM, PTFE, CR
FLANGE MATERIAL: carbon steel, stainless steel

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Product information

PERFORMANCE

NR:

NR rubber expansion joints are characterized by high elasticity, high elongation, excellent tear resistance and electrical insulation, good wear resistance and drought resistance, good processability, easy adhesion to other materials, and superior to most synthetic rubber in comprehensive performance.

The disadvantages are poor oxygen and ozone resistance, easy aging and deterioration, poor oil and solvent resistance, low acid and alkali corrosion resistance and low heat resistance.

Use temperature range: about – 60 +80.
EPDM:

EEPDM rubber joint is also called EPDM rubber expansion joint. It is characterized by excellent ozone resistance, ultraviolet resistance, weather resistance and aging resistance, ranking first in general rubber. Electrical insulation, chemical resistance, impact elasticity is good, acid and alkali resistance, small proportion, can be filled with high coordination, heat resistance can reach 150 C, polar solvent-ketone, ester, but not resistant to aliphatic hydrocarbons and aromatic hydrocarbons, other physical and mechanical properties slightly inferior to natural rubber and superior to styrene-butadiene rubber.

The disadvantage is that self-adhesive and mutual-adhesive are very poor, and it is not easy to bond.

Use temperature range: about – 50 +150.
NBR:

NBR rubber joint is also called NBR rubber connector. It is characterized by excellent gasoline and aliphatic hydrocarbon oil resistance, second only to fluorine rubber, and superior to other general rubber. Good heat resistance, air tightness, wear resistance and water resistance, strong bonding force.

The disadvantages are poor cold and ozone resistance, low strength and elasticity, poor acid resistance, poor electrical insulation and poor polar solvent resistance.

Use temperature range: about – 30 +100.
CR:

EChloroprene rubber (CR) joints have excellent anti-oxygen, anti-ozone, non-flammability, self-extinguishing after ignition, oil resistance, solvent resistance, acid and alkali resistance, aging resistance, good air tightness and other advantages; their physical and mechanical properties are also better than natural rubber, so they can be used as general rubber and special rubber.

The main shortcomings are poor cold resistance, large proportion, high relative cost, poor electrical insulation, easy to stick and roll, easy to scorch and easy to stick mold in processing. In addition, raw rubber has poor stability and is not easy to preserve.

Use temperature range: about – 45 +100.

WORKING PRINCIPLE

PRODUCT PARAMETERS

Nominal Diameter(DN)		Length L	Axial displacement		Horizontal Isplacement	Angular deflection
mm	inch	mm	Extension	Compression	mm	(a1+a2)
32	1¼	95	6	9	9	15º
40	1½	95	6	10	9	15º
50	2	105	7	10	10	15º
65	2½	115	7	15	11	15º
80	3	135	8	19	12	15º
100	4	150	10	19	13	15º
125	5	165	12	20	13	15º
150	6	180	12	25	14	15º
200	8	210	16	25	22	15º
250	10	230	16	25	22	15º
300	12	245	16	25	22	15º
350	14	255	16	25	22	15º
400	16	255	16	25	22	15º
450	18	255	16	25	22	15º
500	20	255	16	25	22	15º
600	24	260	16	25	22	15º

NOTES:

Flange is available with DIN Standard,ANSI Standard,JIS Standard,and BS Standard.
The size is available DN32- DN3000
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.

PRODUCT ALBUM

rubber-joints rubberjoint

INSTALLATION INSTRUCTIONS

Single sphere rubber expansion joint 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 single sphere connector 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 single sphere rubber expansion 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 flexible 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.