Carbon Steel Flanged Rubber Expansion Joint
The Carbon Steel Flanged Rubber Expansion Joint is designed to absorb vibration, thermal expansion, noise, and misalignment in piping systems, ensuring long-term reliability and system protection. It is widely used in HVAC systems, industrial pipelines, pump and compressor connections, power plants, water treatment facilities, and chemical processes where flexible movement and vibration isolation are critical.
This expansion joint features a high-quality elastomer body combined with carbon steel flanges, providing excellent mechanical strength and secure installation. The rubber element compensates for axial, lateral, and angular movements caused by temperature changes, pressure fluctuations, and mechanical loads. By reducing stress on pipes, valves, pumps, and other equipment, it significantly extends system lifespan and minimizes maintenance costs.
Carbon steel flanges offer robust structural support and are suitable for standard industrial pressure ratings. The rubber body acts as a vibration and noise dampener, protecting sensitive equipment from fatigue and premature failure. Additionally, the expansion joint helps prevent damage caused by pipe misalignment during installation or operation.
The Carbon Steel Flanged Rubber Expansion Joint is suitable for use with water, seawater, air, mild chemicals, and non-aggressive fluids, depending on the selected rubber material. It is available in various sizes and pressure classes to meet diverse application requirements. Optional tie rods and control units can be supplied upon request for higher-pressure or vacuum applications.
With easy installation, reliable sealing performance, and durable construction, this expansion joint is a cost-effective and efficient solution for improving piping system safety, flexibility, and performance.
1. Pressure & Flange Standard
Flange Standard: ANSI B16.5
Pressure Class: Class 150
Design Pressure: up to 19 bar (285 psi)
Test Pressure: 1.5 × Design Pressure
Class 150 flanges are suitable for most industrial water, HVAC and general process applications.
2. Size Range
Nominal Diameter: DN25 – DN300
Pipe Size Equivalent: NPS 1″ – NPS 12″
This size range covers the majority of standard industrial piping and HVAC system requirements.
3. Temperature Range
EPDM: -20 °C to +120 °C
NBR: -10 °C to +100 °C
Neoprene (CR): -20 °C to +90 °C
The operating temperature depends on the selected rubber compound and working media.
4. Media Compatibility
Water / Hot Water: Suitable
HVAC Fluids: Suitable
Air / Compressed Air: Suitable
Mild Chemicals: Suitable*
Oil & Fuel: Suitable (NBR)
Steam: Not recommended
* Chemical compatibility must be verified according to concentration and temperature.
5. Movement Capacity (Typical)
Axial Movement: ±10–20 mm
Lateral Movement: ±8–15 mm
Angular Movement: ±5–10°
Movement values may vary depending on size and rubber material.
6. Materials
Rubber Body: EPDM / NBR / Neoprene
Flanges: Carbon Steel (ANSI B16.5 Class 150)
Reinforcement: Nylon or Steel Cord
Bolting: Carbon Steel (Stainless Steel optional)
High-quality materials ensure durability, flexibility and secure flange connections.
