Single Sphere Rubber Expansion Joint Product Description
The Single Sphere Rubber Expansion Joint is designed to absorb vibration, reduce noise, and compensate for thermal expansion or contraction in piping systems. Featuring a compact and highly flexible design, it is ideal for use in HVAC systems, water pipelines, industrial processing lines, and pump installations.
Manufactured from high-quality EPDM or NBR rubber and reinforced with multi-ply synthetic fabric and steel rings, the single sphere rubber expansion joint offers excellent resistance to pressure, temperature, and chemical exposure. Its spherical structure allows for superior movement capabilities in all directions, including axial compression, elongation, and lateral deflection.
This expansion joint is widely used in municipal water supply, sewage treatment plants, building piping networks, and chemical processing facilities. It helps protect sensitive equipment such as pumps, valves, and meters by reducing stress caused by thermal and mechanical movement.
The flanges are typically made of carbon steel or stainless steel, conforming to international standards such as ANSI, DIN, or JIS. Available in sizes ranging from DN32 to DN1200, the single sphere rubber expansion joint is a trusted solution for ensuring flexible, long-lasting, and maintenance-friendly pipeline connections.
As one of China’s leading manufacturers of rubber joints and pipeline accessories, we provide durable, tested, and globally certified products to meet your project needs.
Standard of Implementation
| Category | Details |
|---|---|
| Type | Flange |
| Face to Face | API609, BS5155, DIN3202, ISO5752 |
| Flange | DIN, BS, UNI, ISO, ANSI, AS, JIS |
| Mounting Flange | ISO5211 |
| Working Pressure | PN16 (200PSI) |
| Application | HVAC, Water Supply & Sewage, Food & Beverage, Chemical/Petrochemical Processing, Power and Utilities, Paper and Pulp, Ship Building |
Standard Materials Of Main Parts
| NO | PART NAME | MATERIAL |
|---|---|---|
| 1 | Sphere | EPDM/NBR |
| 2 | Flange | CS Coated With Zinc |
Dimensions:(mm)
| SIZE | L | Pn16 | Pn10 | ANSI150 | |||||||
| in | DN | D | D1 | n-d1 | D | D1 | n-d1 | D | D1 | n-d1 | |
| 1.25 | 32 | 95 | 140 | 100 | 4-18 | 140 | 100 | 4-18 | 117 | 89 | 4-16 |
| 1.5 | 40 | 95 | 150 | 110 | 4-18 | 150 | 110 | 4-18 | 127 | 98.5 | 4-16 |
| 2 | 50 | 105 | 165 | 125 | 4-18 | 165 | 125 | 4-18 | 152 | 120.5 | 4-19 |
| 2.5 | 65 | 115 | 185 | 145 | 4-18 | 185 | 145 | 4-18 | 178 | 139.5 | 4-19 |
| 3 | 80 | 135 | 200 | 160 | 8-18 | 200 | 160 | 8-18 | 191 | 152.5 | 4-19 |
| 4 | 100 | 150 | 220 | 180 | 8-18 | 220 | 180 | 8-18 | 229 | 190.5 | 8-19 |
| 5 | 125 | 165 | 250 | 210 | 8-18 | 250 | 210 | 8-18 | 254 | 216 | 8-22 |
| 6 | 150 | 180 | 285 | 240 | 8-23 | 285 | 240 | 8-23 | 279 | 241.5 | 8-22 |
| 8 | 200 | 210 | 340 | 295 | 12-23 | 340 | 295 | 8-23 | 343 | 298.5 | 8-22 |
| 10 | 250 | 230 | 405 | 355 | 12-17 | 395 | 350 | 12-23 | 406 | 362 | 12-25 |
| 12 | 300 | 255 | 460 | 410 | 12-17 | 445 | 400 | 12-23 | 483 | 432 | 12-25 |
| 14 | 350 | 255 | 520 | 470 | 16-27 | 505 | 460 | 16-23 | 533 | 476 | 12-29 |
| 16 | 400 | 255 | 580 | 525 | 16-30 | 565 | 515 | 16-27 | 597 | 539.5 | 16-29 |
| 18 | 450 | 255 | 640 | 585 | 20-30 | 615 | 565 | 20-27 | 635 | 578 | 16-35 |
| 20 | 500 | 255 | 715 | 650 | 20-33 | 670 | 620 | 20-27 | 699 | 635 | 20-32 |
| 24 | 600 | 260 | 840 | 770 | 20-36 | 780 | 725 | 20-30 | 813 | 749.5 | 20-35 |
