Flexible Joints - Pumps, Valves, Piping and Fittings
Flexible joints are installed in marine pump, valve and piping systems to absorb vibration, thermal expansion, equipment movement and minor alignment differences. They may be rubber, elastomer-lined, braided metal or engineered composite construction.
ProShipWorks provides end-to-end support to source and supply Flexible Joints for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.
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Product Information
| Product Name | Flexible Joints |
|---|---|
| Product Category | Pumps, Valves, Piping and Fittings |
| Product Reference | 147 |
| Brands / Manufacturers | Trelleborg, Garlock, Metraflex, Victaulic |
| Unit of Measure | Piece |
Key Features
| Key Feature |
|---|
| 1. Vibration and noise isolation |
| 2. Compensation for thermal expansion and movement |
| 3. Available with flanged, threaded or grooved ends |
| 4. Suitable for seawater, freshwater, fuel, oil and ballast services depending on material |
| 5. Available in rubber, metal-bellows and composite constructions |
Applications of Flexible Joints
| Application |
|---|
| 1. Sea-water cooling and ballast piping |
| 2. Pump suction and discharge connections |
| 3. Valve, engine and machinery pipework |
Models & Manufacturers
| Model | Manufacturer |
|---|---|
| Style 204 Rubber Expansion Joint | Garlock |
| MetraLoop Flexible Connector | Metraflex |
| Style 155 Expansion Joint | Victaulic |
Technical Specifications
| Model | Specification | Value | Unit |
|---|---|---|---|
| Rubber expansion joint | Nominal diameter | DN25 to DN1200 or manufacturer range | mm |
| Rubber expansion joint | Operating temperature | Typically approximately -40 to +120, material dependent | °C |
| Braided metal flexible connector | Construction | Corrugated stainless-steel hose with braided stainless-steel reinforcement | — |
| Flexible joint | End connection | Flanged, threaded, grooved or welded | — |
Standards, Certifications & Class Approval
Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.
| Applicable Standards & Certification | Applicable requirements may include ISO 9001 manufacturing quality systems, EN 14917 for metallic expansion joints where applicable, EN 1092-1 or ASME B16.5 flange dimensions, and relevant piping-system specifications. Certification is product and service dependent. |
|---|---|
| Class Approval | Marine type approval or product acceptance may be available from DNV, ABS, Lloyd's Register, Bureau Veritas and ClassNK for specific products or applications. Verify approval, fire rating and hose assembly requirements with the manufacturer and vessel class. |
Installation, Maintenance & Safety Information
| Installation Notes | Select the joint for the pipe size, pressure, temperature, movement, medium and flange rating. Install with correct flow direction and alignment, support adjacent piping, and do not use the joint to correct major misalignment. Prevent twisting and follow the manufacturer's bolt-tightening sequence. |
|---|---|
| Maintenance Tips | Inspect periodically for cracking, bulging, corrosion, leakage, braid damage, loose bolts and excessive movement. Check supports and guides, keep the joint free from paint or chemical contamination, and replace it when deterioration or leakage is found. |
| Safety Notes | Isolate, depressurize, drain and cool the piping before removal. Confirm compatibility with the conveyed fluid and temperature. Do not exceed rated pressure or movement limits, and provide guards where rupture or spray could endanger personnel. |
Request a Quote for Flexible Joints
Contact ProShipWorks for marine or industrial product sourcing, quotations and delivery.
- Vessel name and IMO number
- ETA / vessel schedule
- Berth or vessel location
- Required quantity
- Preferred delivery window
- Shipping agent contact details
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