Pipe Joint, Rubber Joint, Flexible Joint, Expansion Joint, Pipe Expansion Joint, Rubber Expansion Joint, Flexible Expansion Joint, Rubber Compensator, Expansion Compensator, Flexible Rubber Compensator, Flexible Expansion Compensator, Flexible Pipe Compensator, Flexible Compensator
China National Standards Drafting Unit of Rubber Joint
Qualified Joint Supplier in Nuclear Power Plant
DN35~5000mm single-ball flanged rubber coupling feature rugged yet flexible polyester cord fabric reinforcement, to ensures an exceptional burst pressure rating.
The streamlined flowing arch design reduces turbulence and allows smooth, quiet flow-no need to fill the arch and restrict its movement.
1. Benefits
Flowing arch design prevents sediment buildup and reduces turbulence. Floating flanges can be rotated to accommodate torsion misalignment. Molded spherical bellows accommodate up to one inch of axial movement and transverse deflection polyester-reinforced nitrile tube earns high pressure rating without sacrificing flexibility; Resists most hydrocarbons, oils and gasoline
2. Application Scope
Due to the sound complex performance of the rubber compensators, it is mainly used for the lift and transport of raw water and sewage, and pipeline transportation of feed-water and water for cooling circulation in thermal power plants, condensed water in metallurgy and chemical substances in chemical industry as well as dilution and flexible connection between short and long pipelines. Relying on the high abrasion resistance of rubber, it is also suitable for the transportation under low temperature of powdery and grainy air in any industry.
| Material List |
| No. | Name | Material |
| 1 | Inner rubber | IIR, CR, EPDM, NR, NBR |
| 2 | Outer rubber | IIR, CR, EPDM, NR, NBR |
| 3 | Framework layer | Polyester cord fabric |
| 4 | Flange | Q235 |
| 5 | Reinforcing ring | Steel wire rope |
| Physical and Mechanical Properties Form |
| No | Item | Index | Test value |
| Inner rubber | Outer rubber |
| 1 | ≥Tensile strength(MPa) | 12 | 13 | 13.6 |
| 2 | ≥Break strength (%) | 450 | 500 | 564 |
| 3 | ≤Break permanent deformation (%) | 25 | 30 | 22 |
| 4 | ≤Brittleness temperature (centigrade degree) | -30 | -30 | -40 |
| 5 | ≥Viscosity(KN/m) | 2.0 | 2.0 | 5.6 |
| 6 | Aging hot air (100 centigrade degree×48h) | Tensile strength change (%) | +25~-25 | +25~-25 | 20 |
| Tensile rate change (%) | +10~-30 | +10~-30 | 5 |
| 7 | ≥Acid resistant10%H2SO4×168h | 0.7 | 0.7 | 0.85 |
| 8 | ≥Alkali proof10%NaOH1×68h | 0.7 | 0.7 | 0.85 |
| Technical Parameters for Double Sphere Flexible Rubber Joint: |
DN
Diameter | FF Length (mm) | Axis displacement | Radial displacement | Deflexion
displacement |
|
| Type-I | Type-II | Type-I | Type-II | Type-I | Type-II |
|
| mm | inch | Extension | Compression | Extension | Compression |
|
| 32 | 1¼″ | 90 | 6 | 10 |
|
| 9 |
| ±7.5° |
|
|
| 40 | 1½″ | 95 | 7 | 10 |
|
| 9 |
| ±7.5° |
|
|
| 50 | 2″ | 105 | 7 | 10 |
|
| 10 |
| ±7.5° |
|
|
| 65 | 2½″ | 115 | 7 | 13 |
|
| 11 |
| ±7.5° |
|
|
| 80 | 3″ | 135 | 8 | 15 |
|
| 12 |
| ±7.5° |
|
|
| 100 | 4″ | 150 | 10 | 19 |
|
| 13 |
| ±7.5° |
|
|
| 125 | 5″ | 165 | 12 | 19 |
|
| 13 |
| ±7.5° |
|
|
| 150 | 6″ | 180 | 12 | 20 |
|
| 14 |
| ±7.5° |
|
|
| 200 | 8″ | 210 | 16 | 25 | 30 | 35 | 22 | 25 | ±7.5° | ±10° |
|
| 250 | 10″ | 230 | 16 | 25 | 30 | 40 | 22 | 25 | ±7.5° | ±12° |
|
| 300 | 12″ | 245 | 16 | 25 | 30 | 40 | 22 | 25 | ±7.5° | ±12° |
|
| 350 | 14″ | 255 | 16 | 25 | 35 | 45 | 22 | 30 | ±7.5° | ±12° |
|
| 400 | 16″ | 255 | 16 | 25 | 35 | 45 | 22 | 30 | ±7.5° | ±12° |
|
| 450 | 18″ | 255 | 16 | 25 | 36 | 47 | 22 | 30 | ±7.5° | ±12° |
|
| 500 | 20″ | 255 | 16 | 25 | 36 | 48 | 22 | 30 | ±7.5° | ±12° |
|
| 600 | 24″ | 260 | 16 | 25 | 40 | 50 | 22 | 33 | ±7.5° | ±12° |
|
| 700 | 28″ | 260 | 16 | 25 | 40 | 55 | 22 | 33 | ±7.5° | ±12° |
|
| 750 | 30″ | 260 |
|
| 40 | 55 |
| 33 |
| ±12° |
|
| 800 | 32″ | 260 | 16 | 25 | 45 | 55 | 22 |
| ±7.5° | ±12° |
|
| 900 | 36″ | 260 | 16 | 25 | 45 | 55 | 22 | 35 | ±7.5° | ±12° |
|
| 1000 | 40″ | 260 | 16 | 25 | 45 | 60 | 22 | 35 | ±7.5° | ±12° |
|
| 1100 | 44″ | 300 |
|
| 45 | 60 |
| 35 | ±7.5° | ±12° |
|
| 1200 | 48″ | 300 | 16 | 25 | 50 | 60 | 24 | 38 | ±7.5° | ±10° |
|
| 1300 | 52″ | 300 |
|
| 50 | 60 |
| 38 |
| ±10° |
|
| 1400 | 56″ | 350 |
|
| 50 | 70 |
| 40 |
| ±10° |
|
| 1500 | 60″ | 350 |
|
| 60 | 70 |
| 40 |
| ±10° |
|
| 1600 | 64″ | 350 | 18 | 25 | 60 | 70 | 24 | 46 | ±7.5° | ±10° |
|
| 1800 | 72″ | 400 | 18 | 25 | 60 | 75 | 24 | 48 | ±7.5° | ±10° |
|
| 2000 | 80″ | 450 |
|
| 70 | 75 |
| 50 |
| ±10° |
|
| 2200 | 80″ | 400 |
|
| 70 | 75 |
| 50 |
| ±10° |
|
| 2200 | 88″ | 500 |
|
| 70 | 80 |
| 60 |
| ±10° |
|
| 2400 | 96″ | 500 |
|
| 80 | 80 |
| 60 |
| ±10° |
|
| 2600 | 104″ | 500 |
|
| 85 | 80 |
| 60 |
| ±10° |
|
| 2800 | 112″ | 550 |
|
| 85 | 80 |
| 60 |
| ±10° |
|
| 3000 | 120″ | 550 |
|
| 85 | 80 |
| 60 |
| ±10° |
|
Henan Liwei Industry Co. Ltd, established in 1983, is a leading manufacturer specializing in processing various steam, water, wind pipe expansion joints and compensation joints, and a main base for producing crushers and superfine grinding mills.
Liwei is the appointed enterprise by the former chemical industry ministry, national construction ministry and general petrol chemical company, member unit of China Water Supply Association and Power Equipment Network Union, and joints production unit recommended by China Water Association and National Metallurgy Ministry.
Based on the scientific management mode of modern enterprises, the company owns advanced process, strong technical strength, leading production equipment and complete testing instruments and apparatus, and it has 5 senior engineers, 16 engineers, 30 senior technicians and about 300 employees. With a set of effective service system, the company has formed a service team characterized of honesty and credit, planned site for clients free of charge as well as design and installation of foundation drawings and flow drawings. It can provide professional technical training, dispatch technicians for installation and commissioning in suit.
VTM Series Grinding Mill is the new product of Liwei in 2005, which have been granted certificates of national invention patent and utility model patent (Patent No.: ZL200510017387.2). The superfine vertical roller-based mill was developed and produced by Lu Fucai, a famous mill expert at home, professor Xu Changbai from Zhengzhou University and our company, and it is popular among users after it is put into practice. The mill is an original product with power on the grinding head which borrows advanced technologies at home and abroad. It has characteristics of low vibration, low noise, low energy consumption and high output, etc.
Liwei company has been equipped with rich technical strength, excellent design and complete products test measures. We also own a set of strict management system and high-quality technicians. In 2004, we have gained ISO9001 and ISO14001 certificate.
Insisting on the rennet "Development Through Technology, Making More Friends, Creating Green Environment and Responsible For Future", the company has been devoting itself to creating top products and well serving all clients around the world.
