Introduction of reducer type rubber expansion joint The utility model relates to a flexible eccentric eccentric rubber
joint, which can solve the problem of different caliber when the
metal pipe is connected,and has the function of shock absorption
and noise reduction, and can save the installation parts of the
pipeline and save the cost. The utility model is composed of an
inner rubber layer, a fabric reinforcing layer, a middle rubber
layer, an outer rubber layer, an end reinforcement, a metal ring or
a steel wire ring, a metal flange or a parallel movable joint. Specifications of stainless steel flanged concentric reducing
rubber expansion joint | Material List | | No. | Name | Material | | 1 | Outer rubber layer | IIR, CR, EPDM, NR, NBR | | 2 | Inner rubber layer | IIR, CR, EPDM, NR, NBR | | 3 | Frame layer | Polyester cord fabric | | 4 | Flange | Q235 304 316L | | 5 | Reinforcement ring | Bead ring |
| specification | DN50~300 | DN350~600 | | Working pressure (MPa) | 0.25~1.6 | | Bursting pressure (MPa) | ≤4.8 | | Vacuum (KPa) | 53.3(400) | 44.9(350) | | Temperature (℃) | -20~+115(for special condition -30~+250) | | Applicable medium | Air, compressed air, water, seawater, hot water, oil, acid-base,
etc.. |
| DN(large)×DN(small) | Length | Axial
displacement
(extension) | Axial
displacement
(compression) | Radial
displacement | Deflecting
angle | | (a1+a2)° | | 50×32 | 180 | 15 | 18 | 45 | 35° | | 50×40 | 180 | 15 | 18 | 45 | 35° | | 65×32 | 180 | 15 | 18 | 45 | 35° | | 65×40 | 180 | 15 | 18 | 45 | 35° | | 65×50 | 180 | 15 | 18 | 45 | 35° | | 80×32 | 220 | 15 | 18 | 45 | 35° | | 80×50 | 180 | 20 | 30 | 45 | 35° | | 80×65 | 180 | 20 | 30 | 45 | 35° | | 100×40 | 220 | 20 | 30 | 45 | 35° | | 100×50 | 180 | 20 | 30 | 45 | 35° | | 100×65 | 180 | 22 | 30 | 45 | 35° | | 100×80 | 180 | 22 | 30 | 45 | 35° | | 125×50 | 220 | 22 | 30 | 45 | 35° | | 125×65 | 180 | 22 | 30 | 45 | 35° | | 125×80 | 180 | 22 | 30 | 45 | 35° | | 125×100 | 200 | 22 | 30 | 45 | 35° | | 150×50 | 240 | 22 | 30 | 45 | 35° | | 150×65 | 200 | 22 | 30 | 45 | 35° | | 150×80 | 180 | 22 | 30 | 45 | 35° | | 150×100 | 200 | 22 | 30 | 45 | 35° | | 150×125 | 200 | 22 | 30 | 45 | 35° | | 200×80 | 260 | 22 | 30 | 45 | 35° | | 200×100 | 200 | 25 | 35 | 40 | 30° | | 200×125 | 220 | 25 | 35 | 40 | 30° | | 200×150 | 200 | 25 | 35 | 40 | 30° | | 250×100 | 260 | 25 | 35 | 40 | 30° | | 250×125 | 220 | 25 | 35 | 40 | 30° | | 250×150 | 220 | 25 | 35 | 40 | 30° | | 250×200 | 220 | 25 | 35 | 40 | 30° | | 300×125 | 260 | 25 | 35 | 40 | 30° | | 300×150 | 220 | 25 | 35 | 40 | 30° | | 300×200 | 220 | 25 | 35 | 40 | 30° | | 300×250 | 220 | 25 | 35 | 40 | 30° | | 350×200 | 230 | 28 | 38 | 35 | 26° | | 350×250 | 230 | 28 | 38 | 35 | 26° | | 350×300 | 230 | 25 | 38 | 40 | 26° | | 400×200 | 230 | 25 | 38 | 40 | 26° | | 400×250 | 240 | 28 | 38 | 35 | 26° | | 400×300 | 240 | 28 | 38 | 35 | 26° | | 400×350 | 260 or | 28 | 38 | 35 | 26° | | 285 | | 450×250 | 280 | 28 | 38 | 35 | 26° | | 450×300 | 240 | 28 | 38 | 35 | 26° | | 450×350 | 240 | 28 | 38 | 35 | 26° | | 450×400 | 240 | 28 | 38 | 35 | 26° | | 500×250 | 280 | 28 | 38 | 35 | 26° | | 500×300 | 280 | 28 | 38 | 35 | 26° | | 500×350 | 240 | 28 | 38 | 35 | 26° | | 500×400 | 230 | 28 | 38 | 35 | 26° | | 500×450 | 240 | 28 | 38 | 35 | 26° | | 600×400 | 240 | 28 | 38 | 35 | 26° | | 600×450 | 240 | 28 | 38 | 35 | 26° | | 600×500 | 240 | 28 | 38 | 35 | 26° |
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