EPDM double ball expansion rubber bellows
The double ball rubber joint is composed of inner rubber layer,
nylon cord fabric reinforcing layer, outer composite rubber ball
and metal flange. The multi wave design increases the length of the
double ball rubber joint and the amount of compensation. It makes
full use of the high elasticity and high air tightness of raw
rubber, so that it has high internal density, can withstand high
pressure and has good elastic deformation effect. With unique
design, novel structure and good sealing performance, it solves the
pipeline burst caused by thermal expansion and cold contraction and
the damage of pipeline connecting equipment, and effectively
improves the service life of pipeline and the protection of
equipment.
Expansion rubber bellows characteristics
1. The ball itself is designed to be longer than the single ball
rubber joint, which has good vibration and noise reduction effect
2. Good telescopic displacement performance and longer service life
than single ball rubber joint
3. Small volume, light weight, good flexibility and convenient
installation and maintenance
4. After installation, it can absorb the lateral, axial and angular
displacement caused by pipeline vibration; It is not limited by the
concentricity of the pipeline and the non parallelism of the
flange, which can reduce the noise generated by the vibration of
the pipeline, water pump and so on
5. The flexibility of raw materials is good. Choosing different
rubber materials can make it more effectively used in various
pipelines, effectively prevent the corrosion of corrosive medium on
the inner wall of rubber joint, and prolong the service life
Part of expansion rubber bellows technical data
Main data of expansion rubber bellows
|
Nominal diameter(DN) | Length | Hole diameter quantitvd | Axial displacement(mm) | Horizontal displacement | Deflexion angle |
mm | inch | mm |
| Extension | Compression | mm | (a1+a2)° |
40 | 1 1/2 | 165 | 18-4 | 30 | 50 | 45 | 15° |
50 | 2 | 165 | 18-4 | 30 | 50 | 45 | 15° |
65 | 2 1/2 | 175 | 18-4 | 30 | 50 | 45 | 15° |
80 | 3 | 175 | 18-8 | 35 | 50 | 45 | 15° |
100 | 4 | 225 | 18-8 | 35 | 50 | 40 | 15° |
125 | 5 | 225 | 18-8 | 35 | 50 | 40 | 15° |
150 | 6 | 225 | 22-8 | 35 | 50 | 40 | 15° |
200 | 8 | 325 | 22-8 | 35 | 60 | 40 | 15° |
250 | 10 | 325 | 22-12 | 35 | 60 | 35 | 15° |
300 | 12 | 325 | 22-12 | 35 | 60 | 35 | 15° |
350 | 14 | 330 | 22-16 | 35 | 60 | 35 | 15° |
400 | 16 | 330 | 26-16 | 35 | 60 | 35 | 15° |
450 | 18 | 330 | 26-20 | 35 | 60 | 35 | 15° |
500 | 20 | 350 | 26-20 | 35 | 60 | 35 | 15° |
600 | 24 | 350 | 30-20 | 35 | 60 | 35 | 15° |
700 | 28 | 350 | 30-24 | 35 | 60 | 35 | 30° |
800 | 32 | 400 | 30-24 | 35 | 60 | 35 | 30° |
Note: 1. The special requirements of expansion rubber bellows can
be customized according to the user's drawing. Flange standard is
GB / t9115.1-2000. Various flange standards (GB, JB, Hg, CB, ANSI,
DIN, BSEN, NF, en, JIS, ISO, etc.) can be selected for production.
The rubber ball of three ball rubber joint can be used as natural rubber, ethylene propylene diene monomer
rubber, chloroprene rubber, butyl rubber, butadiene rubber,
fluorine rubber, etc. when the three ball rubber joint of DN200 and above is used for suspended water supply, the pipeline
must have fixed support or fixed support, otherwise three ball rubber joint should be installed with anti falling device.
Expansion rubber bellows details show
Expansion rubber bellows production flow
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Expansion rubber bellows OEM&ODM
How to choose the right rubber joint? It is necessary to understand
the compatibility between the medium and the selected material, the
range of full temperature, full pressure and full vacuum, the
amount of movement required and the size between pipe flanges. With
this information, Jingning application engineers can help determine
the ideal rubber joint for any application.
Note:The special requirements of expansion rubber bellows can be
customized.
Expansion rubber bellows Application
Because of its good comprehensive performance, rubber joints are
widely used in basic projects such as chemical industry,
construction, water supply and drainage, petroleum, industry,
refrigeration, sanitation, plumbing, fire control, electric power
and so on.
