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Single Sphere Rubber Expansion Joint - China Factory Suppliers for EPDM, NBR, and Neoprene Joints
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 |
Tianjin Guoji Valve Co., Ltd. is an export-oriented valve manufacturer with 15,332 square meter factory area, which has strong capability of R&D, Manufacture, Trading and Service. Now our company has passed the Lloyd's Register (LR) ISO9001: 2015 quality management system certification (ISO Approval number: ISO 9001 – 00033059) and CE/PED certification (EU Certificate Of Conformity). (Certificate No: 0343/PED/SHA/BJG00001668/A).
TGV's products covered Butterfly valves, Check valves, Strainers, Gate valves, Ball valves, Globe valves, Expansion joints, Flanges and Fittings with pressure range from 0.5 to 6.4 MPa, size from DN15 to DN3000. The products also have been widely exported to more than 30 countries and regions.
We aim at deliver only quality valves with professional services, we see quality and service as life and always take our reputation and promises seriously.
Frequently Asked Questions
QWhat is the primary function of a Single Sphere Rubber Expansion Joint?
It is designed to absorb vibration, reduce noise, and compensate for thermal expansion or contraction in piping systems.
QWhat materials are used to manufacture the rubber expansion joint?
The sphere is manufactured from high-quality EPDM or NBR rubber reinforced with multi-ply synthetic fabric and steel rings, while the flanges are typically made of carbon steel (coated with zinc) or stainless steel.
QWhat pressure standards and sizes are available?
It supports a working pressure of PN16 (200PSI) and is available in sizes ranging from DN32 to DN1200.
QWhat standards do the flanges conform to?
The flanges conform to major international standards including DIN, BS, UNI, ISO, ANSI, AS, and JIS.
QWhat certifications does the manufacturer hold?
Tianjin Guoji Valve Co., Ltd. is certified with Lloyd's Register (LR) ISO9001: 2015 quality management system certification and CE/PED certification.