مكان المنشأ:
الصين
اسم العلامة التجارية:
JINGNING
إصدار الشهادات:
CE，ISO
رقم الموديل:
RLJS
الوثيقة:
اتصل بنا
Industrial Flange Rubber Expansion Bellows for Thermal Growth Compensation and Pump Vibration Damping
Product Description
The Industrial Flange Rubber Expansion Bellows serves as a critical structural interface designed to maintain the integrity of fluid systems under dynamic stress. Manufactured through a precision vulcanization process using high-density elastomers, this flexible connector acts as a sacrificial buffer that absorbs the intense kinetic energy produced by industrial machinery, thereby preventing the transmission of shock waves throughout the network. The dual-sphere or single-sphere architecture is strategically reinforced with high-tenacity polyester cords to ensure dimensional stability under varying pressure loads, while the floating flange design allows for effortless bolt-hole alignment during complex installations. By compensating for subtle ground shifts, thermal elongation, and piping misalignments, this component eliminates the risk of flange failure and pipe fatigue, making it an indispensable safety element for HVAC, chemical processing, and wastewater treatment facilities where continuous operation and leak prevention are paramount.
Performance characteristics
1. Flexibility: Accommodates axial, lateral, and angular movements.
2. Durability: Reinforced rubber flexible joint provides long-lasting performance.
3. Corrosion Resistance: Resists aggressive environments and chemicals.
4. Noise & Vibration Reduction: Dampens vibrations and shock waves.
5. Ease of Installation & Maintenance: Compact design and standard flange connections facilitate installation and upkeep.
Product Specification
| Size | Length | Allowable Movements in Operation | ||||
| mm | inch | mm | Axial Compression mm | Axial Extension mm |
Transverse Movement mm |
Angular Deflection mm |
| 25 | 1 | 130/152 | 20 | 12 | 14 | 15° |
| 32 | 1 1/4 | 95/130/152 | 20 | 12 | 14 | 15° |
| 40 | 1 1/2 | 95/130/152 | 20 | 12 | 14 | 15° |
| 50 | 2 | 105/130/152 | 20 | 12 | 14 | 15° |
| 65 | 2 1/2 | 115/130/152 | 20 | 12 | 14 | 15° |
| 80 | 3 | 130/135/152 | 20 | 12 | 14 | 15° |
| 100 | 4 | 130/152 | 20 | 12 | 14 | 15° |
| 125 | 5 | 130/152/165 | 20 | 12 | 14 | 15° |
| 150 | 6 | 130/152/185 | 20 | 12 | 14 | 15° |
| 200 | 8 | 130/152/210 | 20 | 12 | 14 | 15° |
| 250 | 10 | 130/203/230 | 20 | 12 | 14 | 15° |
| 300 | 12 | 130/203/245 | 25 | 16 | 22 | 15° |
| 350 | 14 | 200/255 | 25 | 16 | 22 | 15° |
| 400 | 16 | 200/255 | 25 | 16 | 22 | 15° |
| 450 | 18 | 200/255 | 25 | 16 | 22 | 15° |
| 500 | 20 | 200/255 | 25 | 16 | 22 | 15° |
| 600 | 24 | 260 | 25 | 16 | 22 | 15° |
| 700 | 28 | 260 | 25 | 16 | 22 | 15° |
| 800 | 32 | 260 | 25 | 16 | 22 | 15° |
| 900 | 36 | 260 | 25 | 16 | 22 | 15° |
| 1000 | 40 | 260/300 | 25 | 16 | 24 | 15° |
| 1100 | 44 | 300 | 25 | 16 | 24 | 15° |
| 1200 | 48 | 300 | 25 | 16 | 24 | 15° |
|
Note: If the medium is oil, acidic or alkaline substances, and there are special requirements for the working temperature, you can customize it by sending a letter or drawing. Please specify when ordering |
Product Details
Production Flow
|
1.Raw material Top level CR/EPDM/NBR rubber raw materials, No recycled rubber |
2.Plasticating and mixing Special Formulation for better Bending with Nylon,For Better Strength,Sealing |
3.Workblanks wraping Cooper plated steel wire reinforcement prevent pull off |
|
4.Vulcanizing Automatic vulcanization machine ensure vulcanization time and pressure |
5.Inspecting |
6. Packaging |
Application
Rubber Expansion Joint Standard are widely used in various fields, including construction, chemical industry, shipbuilding, tap water, gas, chemical pipelines, petroleum pipelines, food pipelines, air conditioning pipelines, and sewage treatment.
Our Services
1.24-hour online
2.Free samples provided
3.Support customization
4.Provide drawings
5.Multiple payment styles to choose from
6.Factory inspection (material, specifications, quantity, pressure, packaging)
7.Long warranty period
8.Suitable packaging for transportation
Our Customer
Certificate
FAQ
Q1: Can this expansion joint compensate for misalignment in my piping layout?
Yes, it is specifically designed to handle lateral, angular, and axial offsets. However, it is important to ensure the misalignment does not exceed the maximum rated limits of the bellows to prevent premature wear on the rubber walls.
Q2: What is the maximum pressure rating for this flanged connector?
Standard units typically handle PN10 or PN16 (1.0 to 1.6 MPa), but the exact burst pressure depends on the reinforcement layers. For high-pressure environments, we provide specialized high-tensile models with multi-strand steel wire integration.
Q3: Is it possible to install this bellows in a vertical pipeline?
Absolutely. It can be installed both horizontally and vertically. For vertical installations, ensure the piping is properly supported above and below the joint so that the bellows itself does not bear the total weight of the fluid column.
Q4: How does the temperature of the medium affect the rubber's lifespan?
Higher temperatures naturally accelerate the aging of elastomers. While our EPDM units can withstand up to 115°C, continuous operation at peak temperature may reduce flexibility over time. We recommend choosing a material grade that exceeds your average operating temperature by at least 20%.
Q5: Why does the flange rotate freely on the rubber bellows?
This is a "Floating Flange" design. It is intentional to allow for easy alignment with the bolt holes of the fixed pipeline flanges, significantly reducing installation time and preventing the rubber from twisting during the tightening process.
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