Product Name: Flexible rubber joint
Size: DN20-DN1200
Standard: DIN2576, ANSI150LB, BS4504, JIS
Rubber material: EPDM, NBR, NR, NEOPRENE
Flange material: Q235 Galanized
Rubber Expansion joint, Rubber Flexible Joint, Rubber bellow
Certificate: ISO9001, CE, SGS
Type: With control rod, without control rod
Bellow Type: Single sphere, double sphere
End: Flanges
Working pressure: 0.35MPa-1.4Mpa
Working temperature: 80Deg-110 Deg
Bursting Pressure: 3.0-4.8Mpa
Flanges standatd: ANSI, JIS, BS, DN
Bellow materials: EPDM, Neopresne,
Nature rubber, Nitrile, Hypalon
Usage: The rubber joints have been supplied to every aspect of industry and builing, They are designed to compensate for axial, lateral, angular movements and vibrations in piping systems and equipment, which operate at varying conditions of pressure and temperature.
Packing: Cartons then in poly-wooden cases.
Payment: LC. DP. TT
Pressure/Temp Correction Factor
Material List : |
No. | Name | Material |
1) | Inner rubber lining | IIR,CR,EPDM,NR,NBR |
2) | Outer rubber lining | IIR,CR,EPDM,NR,NBR |
3) | Casing ply | Polyester cord fabric |
4) | Flange | Q235A,stainless steel |
5) | Strengthening ring | Q235A |
6) | Stopper | Q235A,stainless steel |
7) | Limit bar | Q235A,35#,stainless steel |
8) | Nut | Q235A,35#,stainless steel |
|
4. Physical and Mechanical Properties of Rubber Expansion Joint : |
No. | Item | index | Measured value |
Inner/outer rubber lining |
1) | Tensile strength (Mpa) | ≥12 | 13.5 |
2) | Tensile yield (%) | ≥450 | 560 |
3) | Tension set at break (%) | ≤25 | 20 |
4) | Hardness (Shore A hardness) | 60±5 | 60 |
5) | Brittleness temperature (°C) | ≤-30 | -40 |
6) | Cohesive strength (between cord fabric) (KN/m) | ≥2.0 | 4.8 |
7) | 100°Cx48h Hot air aging | Rate of Tensile Strength Reduction | ≤25 | 15 |
Rate of Ultimate Elongation Reduction | ≤30 | 20 |
8) | Mass change (10%H2SO4*Room temperature) % | ≤3 | 2 |
9) | Mass change (10%H2SO4*Room temperature) % | ≤3 | 2 |
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5. 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° |
Laizhou dongsheng valve co.,Ltd is a professional valve plant, is a collection of research and development, design, the manufacture, the sale of integrated specialized company. Our main products are series of check valves, including all kinds of single disc swing check valve, double disc swing check valve, flange and threaded ball check valve, flange and wafer silent check valve, stainless steel lift check valve, diaphragm valve, ball valve and butterfly valve etc.
We hold a set of scientific and strict management system, strong technical force, advanced processing equipment and reasonable technical progress, high technology and quality technicists and workers. We have 200 employees, and our factory area is 30000 square meter. We always hold "Do to the quality of survival, to the credibility of development.", so we produce every product carefully and treat every customer sincerely. Our products are used to open and close the pipeline of oil, chemical, water, gas and food etc. Our products are exported mainly to Europe, America, Africa, Southeast Asia, the Middle East and Russia etc. Our products are praised by foreign and domestic customers.
We own good quality certificated by ISO9001 and CE. Welcome friends from home and abroad to visit us. And we look forward to having a sincere and favorable cooperation with you.