Place of Origin:
China
Brand Name:
JINGNING
Certification:
CE，ISO
Model Number:
RLJS
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PN16 Expand Joint Single Sphere Rubber Flanged Expansion Rubber Joint
Expand joint is also called rubber pipe soft joint, flexible rubber joint, rubber soft joint, flexible rubber joint, high pressure rubber joint, rubber shock absorber, compensator, etc. The expand joint can be divided into loose flange type, fixed flange type and threaded type according to the connection mode; the expand joint can be divided into single sphere type, double sphere type, reducer type, curved sphere type and wind pressure coil type according to the structure. The expand joint is composed of inner and outer rubber layer, cord layer and steel ring. After vulcanization, the expand joint is loosely combined with metal flange or parallel joint. Expand joint can reduce vibration and noise, and can compensate the thermal expansion and cold contraction caused by temperature change. Expand joints are widely used in various pipeline systems.
Performance characteristics of expand Joint
Properties of expand joint, such as high elasticity, high air tightness, medium resistance, weather resistance and radiation resistance, etc. The expand joint is made of polyester cord fabric with high strength and strong cold and hot stability, which is cross compounded with it. After high pressure and high temperature molding and crosslinking, it is resistant to forming. The expand joint has high internal density, can withstand high pressure and excellent elastic deformation effect. The expand joint structure design section arc height, long curve, has a large multi-directional displacement function. It is especially suitable for places with complex geological conditions, large settlement radiance and frequent cold and hot changes during pipeline operation, which are easy to cause pipeline operation. The expand joint can effectively eliminate the displacement and physical damage of the pump, valve and pipeline itself by using the elastic sliding of rubber and the heat transfer function of deformation mechanical force. Because the rubber of the expand joint is a bad conductive material, the expand joint is an ideal environmental protection product for reducing vibration and noise transmission.
Technical data of expand joint
| Main data of expand joint | ||||||
| Nominal diameter(DN) | Length | Axial displacement(mm) | Horizontal displacement | Deflexion angle | ||
| mm | inch | mm | Extension | Compression | mm | (a1+a2)° |
| 32 | 1 1/4 | 95 | 6 | 9 | 9 | 15° |
| 40 | 1 1/2 | 95 | 6 | 10 | 9 | 15° |
| 50 | 2 | 105 | 7 | 10 | 10 | 15° |
| 65 | 2 1/2 | 115 | 7 | 13 | 11 | 15° |
| 80 | 3 | 135 | 8 | 15 | 12 | 15° |
| 100 | 4 | 150 | 10 | 19 | 13 | 15° |
| 125 | 5 | 165 | 12 | 19 | 13 | 15° |
| 150 | 6 | 180 | 12 | 20 | 14 | 15° |
| 200 | 8 | 210 | 16 | 25 | 22 | 15° |
| 250 | 10 | 230 | 16 | 25 | 22 | 15° |
| 300 | 12 | 245 | 16 | 25 | 22 | 15° |
| 350 | 14 | 255 | 16 | 25 | 22 | 15° |
| 400 | 16 | 255 | 16 | 25 | 22 | 15° |
| 450 | 18 | 255 | 16 | 25 | 22 | 15° |
| 500 | 20 | 255 | 16 | 25 | 22 | 15° |
| 600 | 24 | 260 | 16 | 25 | 22 | 15° |
Note: 1. The special requirements of expand joint can be customized according to 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 expand joint can be used as natural rubber, EPDM, chloroprene rubber, butyl rubber, butadiene rubber, fluororubber, etc. when the expand joint above DN200 is used for suspension water supply, the pipeline must have fixed support or fixed support, otherwise the expand joint shall be installed with anti falling device.
Expand joint details show
Expand joint production Flow
Do you know how is a expand joint made?Let's see with JINGNING.
It is very important to select the appropriate expand joint, to understand the compatibility of the medium and the selected material of the expand joint, the range of full temperature, full pressure and full vacuum, the amount of movement required, and the size between the pipe flanges. With this information, Jingning application engineers can help determine the ideal expand joint for any application.
Expand joint advantage
1. The expand joint is galvanized for 15 minutes, resistant to high pressure, high temperature, oil, wear, corrosion, acid and alkali.
2. Expand joint are connected with pumps, valves, fire-fighting equipment, pipes with large vibration and pipes with frequent changes of cold and heat.
3. The natural rubber content of expand joint is 47%, which can be used continuously for 15 years without aging.
Expand joint application
Scope of application: due to the good comprehensive performance of expand joint, it is mainly used for the lifting and transportation of raw water and sewage, water supply and cooling circulating water of thermal power plant, pipeline transportation of chemical substances in metallurgical industry, condensate water and chemical industry, cooling and dilution of petrochemical industry, and flexible connection between long and short distance pipelines in other industries. Because the rubber of expand joint has high wear resistance, it is also suitable for the low temperature transportation of granular, powdery and vapor in all industries.
FAQ
Q1What`s the rubber material of expand joint?
A1: EPDM,CR,NBR,etc .It depends on the working enviroment and media.
Q2: Is the flange galvaized of expand joint?
A2: Yes,we have electronic galvanized and hot dip galvanized flanges.We also have painted flanges.
Q3: Can I get a sample?
A3: Of cause. We could delivery by Express,by air or by sea.
Q4: What is the MOQ of expand joint?
A4: 1 Piece, You can also get it as a sample to test our product quality ,then you can purchase order to us .
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