CR Rubber expansion joint

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Structure:

Neoprene rubber expansion joints are flexible “bellows” made by vulcanizing rubber mixtures with reinforced fabrics or steel wires.
In order to increase the compressive resistance of chloroprene rubber expansion joint, the middle wall of bellows is inserted into the reinforcement material of textile or steel wire.
Neoprene rubber expansion joint with rotating galvanized flange, fixed flange or threaded joint with BSPP thread.
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Use environment:

In addition to oxidizing acid and halogen, chloroprene rubber expansion joint has strong resistance to chemicals and inorganic chemicals. Moderate tolerance to aliphatic hydrocarbons.
This special neoprene expansion joint is suitable for water, swimming pool water, sea water, waste water (weak acid or alkali) or oil, cooling water containing oil additives, lubricants, grease and air, compressed air, etc.
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Dimensions of chloroprene rubber expansion joints are DN20 to DN3000 mm:

The pressure resistance of standard chloroprene rubber expansion joints is PN 6, PN 10 and PN 16. Voltage resistance depends on the type and size and maximum value. The pressure resistance of expansion joints should be corrected when the working temperature of medium is higher than 50 degree C. The calibration size depends on the type of expansion joint and the material of bellows.
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Applications:

1) chloroprene rubber expansion joints for water and warm water pressure piping systems for building equipment and general industrial buildings, etc.
2) chloroprene rubber connectors for pumping pipes and turbine pipes in power plants, industrial machinery, general purpose pumps and blowers, etc.
3) Water supply and drainage pipelines for water supply, sewage treatment, sanitary pipeline system, etc.
4) Oil pipes in industrial buildings, shipyards, etc.
5) Loading and unloading routes of ships such as port facilities.

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.

Flexible rubber expansion 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 expansion 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 connector 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.