Rubber Expansion Joints
Flexible Connection · Vibration Control
Premium rubber expansion joint designed for pipeline flexibility and vibration absorption
✓ Superior flexibility & movement absorption ✓ Excellent vibration dampening ✓ Chemical resistant rubber compounds ✓ Reduces pipe stress & noise
Rubber Expansion Joints
Our comprehensive range of rubber expansion joints delivers superior vibration isolation and pipe movement accommodation for industrial applications.
Technical Specifications
| Available Sizes: | 15mm to 3000mm (DN15 to DN3000) |
| Available Lengths: | Standard length, 130mm, 152mm, 200mm, 260mm, 300mm, ect. |
| Rubber Materials: | EPDM, NBR, CR, NR, VITON, etc. |
| Flange Materials: | SS316, SS304, Carbon Steel, etc. |
| Flange Standards: | PN16, PN10, PN16, Table D, Table E, ANSI 150#, ANSI300#, etc. |
How are rubber expansion joints manufactured?
Factory production process and manufacturing techniques behind rubber expansion joints.
Manufacturing Excellence & Quality Assurance
Advanced materials sourcing, proprietary formulations, and precision manufacturing processes ensure superior product performance and longevity.
Vietnamese Raw Materials
Self-Developed Rubber Formula
Rubber Testing Report
Premium Rubber Properties
How to Identify Premium vs. Standard Rubber
✓ Premium Quality
- Appearance: Uniform matte finish
- Color: Deep, consistent black
- Odor: Minimal chemical smell
- Flexibility: Elastic, no cracking
- Surface: Smooth, no air bubbles
✗ Inferior Quality
- Appearance: Uneven, glossy surface
- Color: Faded or inconsistent
- Odor: Strong chemical/oil smell
- Flexibility: Stiff, prone to cracking
- Surface: Rough, visible defects
⚡ Our Advantage
- Formula: Proprietary blend
- Testing: SEAFAR test report
- Durability: 35% longer lifespan
- Performance: 2.5 MPa pressure rating
- Quality: Zero-defect guarantee
| Property | Our Standard | Industry Average | Certification |
|---|---|---|---|
| Pressure Resistance | 2.5 MPa | 1.6 MPa | ISO 1167 Certified |
| Service Life | 25+ Years | 15-18 Years | Accelerated Aging Test |
| Chemical Resistance | pH 2-12 | pH 4-10 | ROHS/REACH Compliant |
| Temperature Range | -40°C to +150°C | -20°C to +80°C | ASTM D2000 |
| Elasticity Retention | 95% after 10 years | 75% after 10 years | DIN 53505 Shore A |
Flange Options for Rubber Expansion Joints
The most commonly used are carbon steel flanges and stainless steel flanges, there are also a variety of flanges available for special environments.
Carbon Steel Flanges
Stainless Steel Flanges
Hot-dip Galvanized Flanges
Marine Vessels Flanges
Fire Protection Flanges
Customized Flanges
Quality Assurance & Control
6-Stage Quality Control Process
Raw Material Testing & Rubber Refining Standards
Comprehensive inspection of raw rubber compounds, additives, and materials with standardized refining processes to ensure chemical composition and physical property compliance.
Primary Processing & Winding Formation Standards
Standardized initial processing procedures and precision winding/forming operations with controlled parameters for consistent product shaping and dimensional accuracy.
Vulcanization Standards
Precise vulcanization process control with standardized temperature, pressure, and timing parameters to achieve optimal rubber curing and cross-linking properties.
Assembly & Labeling Standards
Standardized assembly procedures with precise component integration and accurate labeling protocols ensuring proper identification and traceability requirements.
Packaging Standards
Comprehensive packaging protocols with protective material specifications, sealing procedures, and quality verification to ensure product integrity during transportation.
Storage Standards
Standardized storage conditions with controlled environment parameters, inventory management systems, and preservation protocols to maintain product quality over time.
Our Quality Commitment
Free Replacement Guarantee
Any quality-related issues during the warranty period will be resolved with free product replacement at no additional cost to you.
Shipping Cost Included
All replacement products include full shipping costs covered by GYLDT, ensuring complete customer satisfaction without hidden expenses.
"Quality is not just our standard – it's our commitment to your success."
Supply Chain Excellence
From production to your doorstep - we ensure reliable, efficient delivery with comprehensive logistics support
Rapid Supply Capability
Standard Models
3 days delivery from extensive inventory stock
Custom Solutions
7-10 days for non-standard specifications
Abundant Raw Material Reserves
Sufficient inventory to ensure continuous production
Free Professional Packaging
Express delivery to port next day | Domestic courier to any China port within 3 days
Support multiple modes of transportation
Express Port Delivery
We partner with international express and freight companies for 10+ years, ensuring reliable global shipping solutions.
Trusted Freight Partners
Material Selection Guide - Rubber Material Comparison
Choosing the right material is crucial for optimal product performance. Comprehensive analysis of rubber materials for optimal valve performance across different applications
EPDM
Ethylene Propylene Diene Monomer
Suitable Media
- • Water & steam
- • Ozone & UV exposure
- • Acids & alkalis
- • Polar solvents
Primary Applications
Wastewater treatment, marine environments, HVAC systems, outdoor installations
NR
Natural Rubber
Suitable Media
- • Fresh water
- • Non-petroleum fluids
- • Low-temperature applications
- • General purpose sealing
Primary Applications
General industrial valves, low-temperature systems, cost-effective solutions
NBR
Nitrile Butadiene Rubber
Suitable Media
- • Petroleum oils
- • Hydraulic fluids
- • Fuel systems
- • Mineral oils
Primary Applications
Oil & gas industry, hydraulic systems, fuel handling, automotive applications
FKM/Viton
Fluoroelastomer
Suitable Media
- • Aggressive chemicals
- • High-temperature fluids
- • Acids & solvents
- • Steam & hot gases
Primary Applications
Chemical processing, high-temperature systems, aerospace, pharmaceutical
IIR
Butyl Rubber
Suitable Media
- • Hot water & steam
- • Polar solvents
- • Oxygenated compounds
- • Gas applications
Primary Applications
Gas sealing, steam systems, pharmaceutical, food processing
CR
Neoprene (Chloroprene)
Suitable Media
- • Moderate oils
- • Refrigerants
- • Weather exposure
- • Ozone resistance
Primary Applications
Marine applications, refrigeration, moderate chemical exposure, general purpose
Performance Matrix
Comparative analysis of key properties
| Material | Oil Resistance | Weather Resistance | Chemical Resistance | Temperature Range | Cost Efficiency |
|---|---|---|---|---|---|
| EPDM | |||||
| NR | |||||
| NBR | |||||
| FKM/Viton | |||||
| Butyl (IIR) | |||||
| Neoprene (CR) |
Selection Guidelines
Water Treatment
EPDM recommended for superior chemical resistance and longevity in wastewater applications.
Primary Choice: EPDMOil & Gas
NBR or FKM/Viton for petroleum products and high-temperature hydrocarbon applications.
Primary Choice: NBR/FKMChemical Processing
FKM/Viton essential for aggressive chemicals and high-temperature chemical environments.
Primary Choice: FKMIndustrial Application Cases
Real-world implementations of our duckbill check valves across various industrial sectors, showcasing proven performance and reliability.
Thermal Power Plant Cooling System
Installed in a 600MW coal-fired power plant's circulating water system. Our EPDM duckbill valves have been operating continuously for 5 years without replacement, handling 15,000 m³/h flow rate in harsh thermal conditions.
Chemical Plant Acid-Resistant Pipeline
Deployed in a sulfuric acid production facility using VITON rubber valves. Successfully handling pH 1-2 acidic media at temperatures up to 80°C, demonstrating exceptional chemical resistance and durability.
Marine Vessel Seawater Pump Room
Installed aboard a 50,000-ton cargo vessel's ballast water system. Our neoprene duckbill valves provide reliable backflow prevention in seawater applications, withstanding constant saltwater exposure and pressure variations.
Municipal Wastewater Treatment Plant
Serving a 500,000-population city's main treatment facility. EPDM duckbill valves in the final discharge system prevent tidal backflow, ensuring consistent outfall performance while reducing maintenance costs by 60%.
Dairy Processing Facility
Implemented in a major dairy plant's CIP (Clean-in-Place) system. Food-grade EPDM valves ensure hygienic operations while preventing cross-contamination between different product lines during cleaning cycles.
Copper Mine Dewatering System
Operating in an open-pit copper mine's water management system. Heavy-duty nitrile rubber valves handle abrasive slurries and extreme temperature variations, maintaining operational efficiency in challenging mining conditions.
Technical Support & Consultation
For more technical information or customized solutions, please contact our technical team.
Phone: +86 18703845698
Email: Info@focalvalve.com