2 Inch Double Sphere Rubber Expansion Joint (MPN: STX-EXP-DBL2IN) is an industrial-duty component engineered for continuous factory operations, piping systems, and machinery maintenance in Kenya. Key verified ratings include Joint Type: Double Sphere Arch Rubber Expansion Joint, Nominal Pipe Size: 2 Inch (DN50), Flange Connection Standard: DN50 PN16 / BS4504 Flanges. Standard plant applications include Pump Suction & Discharge Vibration Isolation, Steam Boiler Condensate Pipework, Chilled Water & HVAC Piping Systems. Held at our STARNEX counter on Enterprise Road, Nairobi Industrial Area for immediate collection or same-day dispatch. When requesting a quotation, please specify required quantity, operating voltage/phase, pipe connection size, and delivery destination.
2 Inch Double Sphere Rubber Expansion Joint
2 Inch Double Sphere Rubber Expansion Joint (MPN: STX-EXP-DBL2IN) is an industrial-duty component engineered for continuous factory operations, piping systems, and machinery maintenance in Kenya. Key verified ratings include Joint Type: Double Sphere Arch Rubber Expansion Joint, Nominal Pipe Size: 2 Inch (DN50), Flange Connection Standard: DN50 PN16 / BS4504 Flanges. Standard plant applications include Pump Suction & Discharge Vibration Isolation, Steam Boiler Condensate Pipework, Chilled Water & HVAC Piping Systems. Held at our STARNEX counter on Enterprise Road, Nairobi Industrial Area for immediate collection or same-day dispatch. When requesting a quotation, please specify required quantity, operating voltage/phase, pipe connection size, and delivery destination.
Functional engineering application
The 2 Inch (DN50) Double Sphere Rubber Expansion Joint is a flexible pipe connector engineered to absorb thermal expansion, angular deflection, axial compression, and high-frequency equipment vibration in industrial piping systems. Featuring a twin-sphere moulded EPDM rubber body reinforced with multi-layer nylon cord and hard steel wire rings, this double-arch joint provides double the movement absorption of standard single-sphere joints while dampening water hammer and noise transmission from industrial pumps, boilers, and chillers. Fitted with floating 2" PN16 carbon steel flanges, it is suitable for operating pressures up to 16 Bar (232 PSI) and temperatures up to 110°C.
Heavy-duty 2" (DN50) PN16 double sphere EPDM rubber expansion joint with galvanized steel flanges for vibration isolation & thermal pipe expansion.
Quotation & fulfilment
Parametric technical attributes
| Generic STX-EXP-DBL2IN | |
| IDENTIFICATION | |
| Component Type | 2 Inch Double Sphere Rubber Expansion Joint |
| Manufacturer / Brand | Generic |
| Part Number (MPN) | STX-EXP-DBL2IN |
| Stock Keeping Unit (SKU) | STX-EXP-DBL2-052 |
| TECHNICAL PARAMETERS | |
| Joint Type | Double Sphere Arch Rubber Expansion Joint |
| Vacuum Rating | 700 mmHg |
| Axial Compression | 25 mm |
| Axial Elongation | 15 mm |
| Lateral Deflection | 20 mm |
| Angular Deflection | 15° |
| Overall Face-to-Face Length | 175 mm |
| Weight | 4.2 kg |
| Country of Manufacture | International OEM Standard |
| CONSTRUCTION & CONNECTION | |
| Nominal Pipe Size | 2 Inch (DN50) |
| Flange Connection Standard | DN50 PN16 / BS4504 Flanges |
| Elastomer Body Material | High Grade EPDM Rubber (Ethylene Propylene Diene Monomer) |
| Reinforcement Material | Multi-ply Synthetic Nylon Fabric & Steel Wire Rings |
| Flange Material | Electro-Galvanized Carbon Steel |
| PERFORMANCE & RATINGS | |
| Nominal Pressure Rating | 16 Bar (232 PSI / 1.6 MPa) |
| Bursting Pressure | 48 Bar (696 PSI) |
| Working Temperature Range | -10°C to +110°C (14°F to 230°F) |
| COMPLIANCE & LOGISTICS | |
| Stock Availability | On request |
System fitment & verified replacements
Interchangeable models
Commonly installed on equipment from
Common questions on this part
Double sphere joints feature two arches, providing double the axial movement, lateral deflection, and vibration absorption capacity of single sphere joints.
It is rated for a continuous working pressure of 16 Bar (PN16 / 232 PSI) with a burst rating of 48 Bar.
Yes, EPDM is superior for hot water, steam condensate, and weak acids up to 110°C.
Yes, the floating steel flanges rotate 360 degrees around the rubber lip, making bolt-hole alignment effortless.
Control rods are recommended when pipework is unanchored or operating near maximum pressure to prevent excessive elongation.
The face-to-face length of the 2" double sphere joint is 175 mm.
Yes, STARNEX stocks 2" double sphere expansion joints at our Nairobi branch.
Yes, it is vacuum rated up to 700 mmHg.
Standard PN16 / BS4504 4-bolt drilling pattern for 2" (DN50) pipe.
For diesel and oil lines, NBR (Nitrile) rubber joints are recommended instead of EPDM.
