1. Product PerformanceThe product is manufactured through welding or metal casting, and the loosing part is sealed by echelon ring rubber. Operated by gland and bolt and based on the principle of rubber's elastic deformation under pressure, the seal ring will be deformed and static seal will be done between joint body and expansion pipe wall. According to clients demand and product performance, metal and seal ring materials will be selected strictly. High— Strength antifouling paint is painted outside and the joint bolt is made of high— Strength carbon steel or stainless steel, since there is some space between body and expansion, so axes and radial displacement will appear. Inside pipe, it becomes available to compensate and release pipe blind plate propulsion and makes it easy to maintain and change pump and valve. Therefore, it is an ideal matching product for pipe's installation and operation.
2. Applicable ScopeThe metal product is functioned with pull and pressure resistance and excellent seal performance and easy installation. Hence it is widely used in power, metallurgy, drainage and sewage disposal to connect pump, valve and pipe, etc. It also has some multi-directional displacement during pipes' operation so as to release blind plate propulsion and protect pipes, especially it makes it easy to install and maintain pipes. However, force-transferring joints shall be used on the pipe corner and pump exit, because, the joints can transfer blind plate propulsion from pump start to pump and pipe through force— Transferring bolt and prevent pull to centralize close to pipe or pump or damage equipment by impact force. Other joints can be selected freely for other positions. Our tenet: Your trust is our honor and will manufacture high— Quality products for you.
3. Application RangeEquipped with the excellent comprehensive performances of flexible rubber joint, the product can be used for lift and transportation of raw water and sewage, transportation of water supply, cooling cycle water of thermal power plant, condensate water of metallurgy industry and chemical materials of chemical industries, cooling and dilution of oil and chemical industries and flexible connection of other industries. It is also suitable to transport all grain and powder material and gas for its high abrasive resistance.
Technical Parameters for VSSJAF Double_Flange Loosing Force_Transferring Joint
PN0.6MPa Unit (mm) |
| DN | Pipe Dia. | Flange joint size | Installation dimension | Expansion δ | Weight (kg) |
| Flange outer dia. | Dia. of bolt hole | Bolt | max | min |
| No. | Thickness |
| 65 | 76 | 160 | 130 | 4 | 14 | 220 | 180 | 40 | 11.8 |
| 80 | 89 | 190 | 150 | 18 | 13.5 |
| 100 | 114 | 210 | 170 | 18.6 |
| 125 | 140 | 240 | 200 | 8 | 23.8 |
| 150 | 168 | 265 | 225 | 30.4 |
| 200 | 219 | 320 | 280 | 36.9 |
| 250 | 273 | 375 | 335 | 12 | 49.6 |
| 300 | 325 | 440 | 395 | 22 | 245 | 195 | 50 | 61.5 |
| 350 | 377 | 490 | 445 | 79.3 |
| 400 | 426 | 540 | 495 | 16 | 91.2 |
| 450 | 480 | 595 | 550 | 104.1 |
| 500 | 530 | 645 | 600 | 20 | 123.2 |
| 600 | 630 | 755 | 705 | 26 | 265 | 215 | 169.8 |
| 700 | 720 | 860 | 810 | 24 | 208.9 |
| 800 | 820 | 975 | 920 | 30 | 380 | 320 |
60
| 346.1 |
| 900 | 920 | 1075 | 1020 | 380.6 |
| 1000 | 1020 | 1175 | 1120 | 28 | 438.8 |
| 1200 | 1220 | 1405 | 1340 | 32 | 33 | 400 | 340 | 646.7 |
| 1400 | 1420 | 1630 | 1560 | 36 | 36 | 843.6 |
| 1600 | 1620 | 1830 | 1760 | 40 | 410 | 350 | 1189.7 |
| 1800 | 1820 | 2045 | 1970 | 44 | 39 | 1394.8 |
| 2000 | 2020 | 2265 | 2180 | 48 | 42 | 430 | 370 | 1665.6 |
| 2200 | 2220 | 2475 | 2390 | 52 | 2056.7 |
| 2400 | 2420 | 2685 | 2600 | 56 | 2350.1 |
| 2600 | 2620 | 2905 | 2810 | 60 | 48 | 490 | 410 | 80 | 2720.4 |
| 2800 | 2820 | 3115 | 3020 | 64 | 3053.2 |
| 3000 | 3020 | 3315 | 3220 | 68 | 3460.3 |
| 3200 | 3220 | 3525 | 3430 | 72 | 3912.6 |
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.
