Rubber Expansion Joint: Flexible Guardian for Pipeline Systems
Product Introduction
As a critical flexible connector, the rubber expansion joint absorbs pipeline displacement and vibration to prevent flange leaks or pipe fractures. Its multi-layer structure - EPDM inner lining, polyester reinforcement, and CR outer cover - delivers impact resistance and chemical compatibility. Flanges meet international standards for reliable sealing. Widely used in HVAC water circulation, pump discharge lines, and industrial process piping, it excels in systems with frequent start-stop cycles or thermal fluctuations, ensuring safe and quiet operation.
Product Features
The rubber expansion joint utilizes a composite laminate of natural and synthetic rubber with embedded polyester cord reinforcement, offering high elasticity and tensile strength for PN10-PN16 pressure ratings. The inner EPDM (Ethylene Propylene Diene Monomer) layer resists temperatures up to 80°C, weak acids/alkalis, and ozone, while the outer CR (Chloroprene Rubber) layer provides UV and weathering resistance (-20°C to 80°C). Flanges comply with GB/T 9119 standards and support ANSI, DIN, and JIS connections. Its concentric reducer design allows 30% axial compression and 15° radial deflection to compensate for pipeline movement.
Product Advantages
Vibration & Noise Reduction
Rubber elasticity absorbs vibration energy, reducing system noise by 15-20 dB and protecting pumps/valves.
01
Multi-Directional Compensation
Axial extension, lateral/angular deflection mitigate stress from thermal expansion and settlement.
02
Easy Installation
Quick flange alignment without specialized tools; fatigue-resistant rubber requires no lubrication.
03
Media Versatility
Suitable for water, air, oils, and mildly corrosive fluids in HVAC, plumbing, firefighting, and industrial systems.
04
Cost-Effective Durability
EPDM-CR dual-layer protection enhances aging resistance, ensuring long service life under ISO9001 standards.
05
|
Item |
KXT-A1 |
KXT-A2 |
KXY-A3 |
|
MPa (kgf/cm²) Working pressure |
1.0 (10) |
1.6 (16) |
2.5 |
|
MPa (kgf/cm²) Explosion pressure |
2.0 (20) |
3.0 (30) |
4.5 (45) |
|
KPa (mm/Hg) Vacuum |
53.3 (400) |
86.7 (650) |
100 (750) |
|
℃ Applicable Temperature |
-15℃~+115℃ (-30℃~+250℃ under special conditions) |
||
|
Applicable Media |
Air, compressed air, water, sea, water, hot water, oil acid, alkali, and so on. |
||
|
DN (Nominal Diameter) |
Length (mm) |
Axial displacement mm |
Horizontal Displacement (mm) |
Angular deflection (a1+a2) |
||
|
mm |
inch |
Extension |
Compression |
|||
|
32 |
1.25 |
95 |
6 |
9 |
9 |
15 |
|
40 |
1.5 |
95 |
6 |
10 |
9 |
15 |
|
50 |
2 |
105 |
7 |
10 |
10 |
15 |
|
65 |
2.5 |
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 |
25 |
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 |
6 |
25 |
22 |
15 |
|
600 |
24 |
260 |
6 |
25 |
22 |
15 |
|
700 |
28 |
260 |
16 |
25 |
22 |
15 |
|
800 |
32 |
260 |
16 |
25 |
22 |
15 |
|
900 |
36 |
260 |
6 |
25 |
22 |
15 |
|
1000 |
40 |
260 |
18 |
26 |
24 |
15 |
|
1200 |
48 |
260 |
18 |
26 |
24 |
15 |
|
1400 |
56 |
350 |
20 |
28 |
26 |
15 |
|
1600 |
64 |
350 |
25 |
35 |
30 |
10 |
Technical Parameters
|
Size |
DN32-DN600 |
DN650-DN2000 |
|
Working pressure |
16Bar |
10Bar |
|
Shell |
24Bar |
15Bar |
|
Seal |
18Bar |
11Bar |
|
Operating Temperature |
-45°C~+150°C |
|
|
Operating Environment |
Ballast and bilge system Chemical processing Desalination plants |
|
|
Driving Method |
Hand Lever Worm Gear Electric Pneumatic |
|
Executive Standards
|
Design Standard |
EN 593, MSS SP67, API 609, BS 5155 |
|
Inspection & Test |
API 598, ISO 5208, EN 12266 |
|
End Standard |
ANSI B16.1 CL. 125LB & B16.5 CL. 150LB |
|
AS 2129 Table D & E |
|
|
BS 10 Table D & E |
|
|
DIN 2501 (PN6, PN10, PN16) |
|
|
EN 1092 (PN6, PN10, PN16) |
|
|
ISO 2531 (PN6, PN10, PN16), 7005 (PN6, PN10, PN16) |
|
|
KS B / JIS B 1511 / 2210 (5K & 10K) |
|
|
MSS SP44 CL. 150LB |
|
|
AWWA C207 |
|
|
SABS 1123 Table 1000/3 & Table 1600/3 |
|
|
Face to Face |
ISO 5752, EN 558, MSS SP67, API 609, DIN 3202 |
|
Top Flange |
ISO 5211 |
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