The MT Series EPDM rubber expansion joints absorb axial, lateral and angular pipe movement in a single compact unit, protecting UAE HVAC plant, pumping systems and domestic water installations from vibration fatigue and thermal stress. An NBR inner tube resists potable water, glycol and neutral media; flanged or BSP threaded ends connect directly to standard UAE/GCC pipework without special adaptors. Rated PN10 for operating temperatures up to 80 °C, CE · WRAS certified.
Technical specifications
| Origin | Manufactured in Spain · MT Valves & Fittings |
|---|---|
| Stock location | Dubai, UAE |
Key Features
- EPDM rubber sphere body — absorbs axial, lateral and angular pipe movement in one unit
- NBR inner tube — resistant to potable water, glycol and neutral media
- Flanged or BSP threaded ends — easy connection to standard UAE/GCC pipework
- Rated PN10 — operating range −10 °C to +80 °C, suitable for UAE HVAC and domestic systems
- Reduces vibration transmission from pumps and mechanical equipment to pipework
- CE · WRAS certified — approved for potable water and building services
Certifications
This series is certified per MT Valves & Fittings Declaration of Conformity. Full technical detail available in the official datasheet.
All sizes stocked in Dubai. −30% off MT list price included below. Contact us for volume pricing.
| Size | Code | Weight | Min. Sale | Price | Qty |
|---|---|---|---|---|---|
| 1 1/4" | 5121032 |
2.8 kg | Box 1 | — | — |
| 1 1/2" | 5121040 |
3 kg | Box 1 | — | — |
| 2" | 5121050 |
4 kg | Box 1 | — | Select → |
| 2 1/2" | 5121065 |
5.5 kg | Box 1 | — | Select → |
| 3" | 5121080 |
6.5 kg | Box 1 | — | Select → |
| 4" | 5121100 |
7.5 kg | Box 1 | — | Select → |
| 5" | 5121125 |
10 kg | Box 1 | — | Select → |
| 6" | 5121150 |
12 kg | Box 1 | — | Select → |
| 8" | 5121200 |
16 kg | Box 1 | — | Select → |
| 10" | 5121250 |
23 kg | Box 1 |
AED —
|
|
| 12" | 5121300 |
28 kg | Box 1 | — | Select → |
| 14" | 5121350 |
36 kg | Box 1 | — | — |
| 16" | 5121400 |
45 kg | Box 1 | — | — |
| 20" | 5121500 |
60 kg | Box 1 | — | — |
Frequently Asked Questions
What is a rubber expansion joint used for in building pipework?
Rubber expansion joints absorb thermal movement, vibration, and minor misalignment in piping systems. In UAE district cooling, HVAC, and high-rise buildings they are installed at pump connections to reduce noise and vibration transmission, and along long pipe runs to compensate for thermal expansion. They also protect equipment from pipe stress.
What is the pressure and temperature rating?
MT rubber expansion joints are rated PN10 to PN16 depending on size, suitable for temperatures from -10 °C to +90 °C with EPDM rubber — ideal for chilled water and cold potable water. For hot water (up to 150 °C) or steam, PTFE-lined versions with alternative elastomers are available on request.
What flange standard is used — compatible with UAE pipework?
MT expansion joints are supplied with EN 1092-1 (PN10/PN16) flanges as standard — the most common flange standard across UAE and GCC building and infrastructure projects, mating directly with standard steel, cast-iron, or HDPE flanged pipework.
Are there movement limits I need to respect during installation?
Yes. Each size has rated axial compression, axial extension, and lateral offset limits specified in the datasheet. Always install a control rod assembly if the pipeline has no rigid anchors to limit movement. Exceeding rated limits can cause burst failure — the rating specifies the elastic design limit, not the burst point.
What are delivery lead times from Dubai stock?
Common sizes are stocked in Dubai for same or next business day dispatch. For project quantities or non-standard face-to-face lengths, contact MT Middle East for pricing and lead time.