Double Sphere Rubber Expansion Joint DN15-DN4000 with 6-40 Bar Pressure Rating for Pipeline Systems
Price:
Price Negotiable
MOQ:
1 set
Delivery Time:
After payment 15-30 work days
Brand:
Henan Liwei
Product Description
The double sphere rubber expansion joint is engineered to reduce vibration and noise while compensating for thermal expansion and contraction in pipeline systems. This industrial component features vulcanized inner and outer rubber construction with nylon cord reinforcement and metal flange connections.
Product Structure & Materials
| No | Component | Material Options | Remarks |
|---|---|---|---|
| 1 | Outer/Inner Rubber | EPDM, NR, NBR, PTFE, BR, CR, BR+CR, FKM, Sylopute | Select materials based on media compatibility |
| 2 | Frame | Nylon Cord Fabric | Density and layer count determine pressure rating |
| 3 | Pressurized Ring | Steel Wire Strand | Prevents pressure deformation and pull-out |
| 4 | Flange | Stainless Steel, Carbon Steel, Ductile Iron | Choose materials according to application requirements |
Quality & Manufacturing Standards
- Surface Quality: Smooth external surface free from burrs, rust, pores, slag inclusions, cracks, and mechanical damage
- Welding Standards: Flat welds without porosity, cracks, slag inclusions, or omissions; flange roundness complies with industry standards
- Corrosion Protection: Acid pickling and rust removal followed by anti-corrosion treatment
- Packaging: Protected against moisture, rust, and shock using plastic cloth, woven fabric, and straw rope
Operating Conditions
| Parameter | Specification |
|---|---|
| Working Temperature | -15°C to 80°C (extended range: -30°C to 150°C) |
| Working Pressure | 6-40 bars (PN6-PN40) |
| Test Pressure | 1.5 times working pressure |
| Explosion Pressure | 2 times working pressure |
| Applicable Media | Air, water, sewage, sea water, acid, alkali, oil, and various chemicals |
Key Features & Benefits
- Allows four-way movement for comprehensive flexibility
- Precision molded from synthetic rubber and nylon cord for durability
- Excellent vibration and noise absorption capabilities
- High pressure resistance up to 40 bars
- Superior corrosion resistance across various media
- Easy installation with floating flange design
Industry Applications
Widely used in chemical engineering, construction, water supply, drainage, petroleum, light and heavy industries, refrigeration, sanitation, water heating, fire protection, and electrical power infrastructure. Available in specialized formulations for acid resistance, alkali resistance, corrosion resistance, oil resistance, high temperature tolerance, radiation resistance, wear resistance, and aging resistance.
Frequently Asked Questions
What is the model number range for the double sphere rubber expansion joint?
Available in sizes from DN15 to DN4000, accommodating a wide variety of pipeline requirements.
Where is the double sphere rubber expansion joint manufactured?
Manufactured in Henan, China, ensuring high-quality production standards and consistent performance.
What certifications does the double sphere rubber expansion joint have?
Certified by multiple international agencies including ISO9001, TUV, WRAS, CO, MTC, PL, IV, ensuring compliance with global quality and safety standards.
What is the minimum order quantity?
Minimum order quantity is 1 set, accommodating both small-scale projects and large industrial applications.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Henan Liwei Industry Co., Ltd.
Location
179 Zhongxin Road, Zhengzhou, Henan，China
Contact Person
Carey Liu