PN16 Neoprene rubber bellows reducer rubber expansion joint
flexible coupling
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.
With unique design, simple structure and good sealing performance,
rubber joint completely solve the pipeline displacement problems
caused by thermal expansion and contraction, as well as mechanical
vibration.
Reducer rubber bellows expansion joint is made up of fabric reinforced rubber main body and metal flange
or wire buckle joint, which is used for vibration reduction, noise
reduction and displacement compensation of pipeline. It is related
to: JGD single sphere rubber joint, jgd-a double sphere, jgd-b wire
buckle connection double sphere, etc., it is A high elasticity,
medium resistance and weather resistance pipe joint. It is also
known as rubber soft joint, shock absorber, pipe shock absorber,
shock absorber throat, size head, variable-diameter joint, but the
name is different, but refers to reducer rubber bellows expansion 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° |
