Product Description
ISO2531 DN800 DCI ductile cast iron flange adaptors and couplings for ductile iron pipe
Product Description
APPLICATION
Universal flange adaptor is also called wide range flange adaptor, tolerance range flange adaptor .
It can fit most standard pipe materials and therefore dramatically reduces the stocks of dedicated couplings.
It is suitable for steel , GRP, PVC, PE, Ductile Iron , Cast Iron and Asbestors Cement pipes.
Size from DN40-DN2000
PRESSURE
PN10, PN16, PN25. Flange according to ISO2531/ EN545,/EN1092
MATERIAL
|
Body |
Ductile Iron GGG50/40 |
|
Gland |
Ductile Iron GGG50/40 |
|
Gasket |
CHINAMFG according to EN681-1 |
|
Bolt &Nut |
Galvanized carbon steel / hot dip galvanized steel/dacromet coating steel 4.8/8.8 grade |
|
Coating |
CHINAMFG boned epoxy more than 250 micron/ Rilsan Nylon |
|
Item No. |
Item Name |
Material |
Specification |
|
1 |
Body |
Ductile Iron |
GGG50 |
|
2 |
End Ring |
Ductile Iron |
GGG50 |
|
3 |
Gasket |
Rubber |
CHINAMFG or NBR |
|
4 |
Bolt |
Galvanized Steel |
ISO898-1:1999 |
|
5 |
Washer |
Galvanized Steel |
|
|
6 |
Nut |
Galvanized Steel |
ISO898-2:1992 |
|
7 |
Cap |
Plastic |
|
Please contact us for more detail , package,delivery time and shipment.
welcome your enquiry ,we will do our best to support.
Detailed Photos
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How Does a Flange Coupling Handle Angular, Parallel, and Axial Misalignment?
A flange coupling is designed to accommodate various types of misalignment that may occur between two shafts. Here’s how it handles different types of misalignment:
- Angular Misalignment: Flange couplings can handle angular misalignment by allowing a slight flexing or bending of the flexible elements. The coupling’s flexible components, such as elastomeric or metallic elements, can bend and compensate for angular misalignment between the shafts. This flexibility ensures that the coupling can transmit torque smoothly even when the shafts are not perfectly aligned in a straight line.
- Parallel Misalignment: Flange couplings can also accommodate parallel misalignment between the shafts. When the two shafts are slightly offset in a parallel direction, the flexible elements in the coupling can move laterally to accommodate this misalignment. This lateral movement helps prevent excessive forces and wear on the coupling and connected equipment, ensuring efficient power transmission even in slightly misaligned conditions.
- Axial Misalignment: Axial misalignment refers to the situation when two shafts are displaced along their common axis. Flange couplings are not specifically designed to handle large axial misalignment. However, certain types of flange couplings may have limited axial movement capabilities due to the flexibility of their components. In some cases, an additional feature like an end float or sliding flange design may be incorporated to accommodate limited axial movement.
It is important to note that while flange couplings can handle a certain degree of misalignment, excessive misalignment can lead to premature wear and failure of the coupling. Regular maintenance and proper alignment of the shafts are essential to ensure the coupling’s optimal performance and longevity.

Can Flange Couplings Be Used in Heavy-Duty Applications Such as Mining and Construction?
Yes, flange couplings can be used in heavy-duty applications such as mining and construction, where they are often employed to transmit power between large machinery and equipment. Flange couplings are designed to handle high torque and axial loads, making them suitable for these demanding industries. Here are some reasons why flange couplings are well-suited for heavy-duty applications:
1. High Load Capacity: Flange couplings are engineered to provide high load-carrying capacity, making them ideal for heavy machinery used in mining and construction. They can efficiently transfer power between components with large torque requirements, such as conveyors, crushers, and excavators.
2. Tolerance to Misalignment: Heavy-duty equipment may experience misalignment due to uneven loading, vibrations, or other factors. Flange couplings can accommodate certain degrees of misalignment, reducing stress on connected components and preventing premature wear or failure.
3. Durability and Strength: In mining and construction, equipment is subjected to harsh conditions, impacts, and vibrations. Flange couplings are typically made from robust materials like steel or cast iron, providing exceptional strength and durability to withstand the rugged environments encountered in these industries.
4. Easy Maintenance: While heavy-duty applications may expose equipment to extreme conditions, maintenance and downtime should be minimized. Flange couplings are designed to be relatively easy to install and maintain, ensuring that machinery can quickly get back to work after routine maintenance or repairs.
5. Various Flange Designs: Flange couplings come in different designs, including rigid, flexible, and torsionally flexible variations. This allows engineers to select the most appropriate type for the specific needs of mining and construction equipment.
However, it is crucial to consider factors such as the specific load requirements, operating conditions, and alignment precision when choosing flange couplings for heavy-duty applications. Proper installation, regular inspection, and adherence to recommended maintenance schedules are essential to ensure the reliable performance and extended service life of the flange couplings in mining and construction equipment.

Can Flange Couplings Handle Misalignment Between Shafts?
Flange couplings are designed to handle a limited amount of misalignment between shafts. However, their ability to accommodate misalignment is more limited compared to flexible couplings.
The misalignment that flange couplings can tolerate is typically in the form of angular misalignment and axial misalignment. Angular misalignment occurs when the axes of the two shafts are not perfectly aligned, causing the flanges to be at an angle to each other. Axial misalignment, on the other hand, refers to the displacement of one shaft along its axis with respect to the other shaft.
It is essential to note that excessive misalignment can lead to increased stress on the coupling and connected equipment. Flange couplings may not be suitable for applications with significant misalignment requirements.
For applications that involve substantial misalignment or require flexibility to accommodate misalignment, flexible couplings are more appropriate. Flexible couplings, such as elastomeric or jaw couplings, can handle both angular and axial misalignment more effectively than rigid flange couplings.
In summary, while flange couplings can handle some degree of misalignment, their primary strength lies in their ability to transmit high torques and withstand heavy loads in more rigidly aligned shaft arrangements. When dealing with misalignment-sensitive systems, it is best to consider flexible coupling options to ensure optimal performance and prevent premature wear on the equipment.


editor by CX 2024-02-25