Product Description

Universal Coupling / Pipe Coupling/ Gibault Coupling
Range of Size:  1 1/2” – 32” (DN40-800mm)
Pressure : PN10/PN16 

1. Description: 

Universal Couplings offer an easy and economical way of joining pipe- whether the pipe is of the same nominal size and/or type or different at each couplings end .
Universal Couplings will handle most of waterworks couplings needs and are capable of connecting most classes of water pipe.

2. Application : 

*  used for pipe connection .
*  suit for Ductile Iron Pipe, Cast Iron Pipe, Steel, Asbestos Cement Pipe, PE, PVC, HDPE Pipe and etc.
*  Working pressure:  PN10 / PN16
*   Suit for Water, Neutral Liquids and Sewage

3. Features :

*   wide range of tolerance
*   corrosion resistance
*   allow angular deflection of +/- 4°

4. Material Sheet :

4.  List of Sizes :

S/N	Size	O.D Range	Sleeve Length	Bolts
	mm	mm	mm	mm
1	DN40	48-60	98	M12x170
2	DN50	59-73	98	M12x170
3	DN65	72-85	98	M12x170
4	DN80	88-103	98	M12x180
5	DN100	96-116	98	M12x180
6		108-120	98	M12x190
7		109-128	98	M12x180
8	DN125	132-146	98	M12x180
9		138-153	98	M12x180
10	DN150	158-172	105	M12x200
11		159-182	110	M12x200
12	DN175	192-210	130	M12x210
13	DN200	198-225	130	M12x210
14		218-235	130	M12x220
15	DN250	242-262	130	M12x220
16		250-267	130	M12x220
17		250-274	130	M12x220
18		272-289	130	M12x220
19	DN300	315-332	130	M12x220
20		322-339	130	M12x220
21	DN350	340-360	130	M12x220
22		351-378	130	M14x230
23		374-391	130	M14x230
24	DN400	390-410	130	M14x220
25		398-430	140	M14x270
26		417-437	130	M14x240
27		425-442	130	M14x240
28	DN450	450-463	130	M14x270
29		455-475	130	M14x270
30		476-500	130	M14x270
31	DN500	500-508	130	M16x270
32		500-533	140	M14x280
33		526-546	130	M14x270
34	DN600	600-630	130	M14x270
35		608-636	130	M14x270
36		630-650	130	M14x270
37	DN700	710-739	155	M16x280
38	DN800	816-842	180	M16x330

4. Project Cases :
 

5. Joint Series :

6. Company Profile :
 

HangZhou CHINAMFG Pipeline Co., Ltd is the professional chinese supplier and exporter of repair clamps and coupling for water lines with working pressure PN10/16 . The range of our products including Universal Coupling, Universal Flange Adaptor, Restraint Coupling, Restraint Flange Adaptor, Step Coupling, Repair Clamps and etc . 
Our product conform the international standard ISO2531, BS EN545 EN598 .
We export to many countries including USA, UK, Spain, Australia, Russia, Indonesia, Singapore, Malaysia and etc. 

7. Certificates : 

8. Contact us :
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Maintenance Requirements for Flexible Flange Couplings

Proper maintenance is essential to ensure the optimal performance and longevity of flexible flange couplings. Regular inspections and maintenance routines can help detect and prevent potential issues before they escalate into major problems. Here are the key maintenance requirements for flexible flange couplings:

• Visual Inspections: Regularly inspect the coupling for any signs of wear, damage, or misalignment. Look for cracks, tears, or deformations in the elastomeric elements and ensure that the flanges are securely fastened.
• Lubrication: Some flexible flange couplings may require periodic lubrication at the flange interface or other moving parts. Check the manufacturer’s guidelines for the recommended lubrication schedule and use the appropriate lubricant.
• Torque Checks: Verify that the flange bolts or screws are tightened to the specified torque. Loose fasteners can lead to misalignment and reduce the coupling’s performance.
• Alignment: Ensure that the connected shafts are correctly aligned. Misalignment can cause increased stress on the coupling and lead to premature failure. If misalignment is detected, it should be corrected promptly.
• Environmental Protection: In harsh environments, such as those with high humidity, chemicals, or abrasive particles, consider implementing protective measures to shield the coupling from potential damage.
• Inspections After Shock Loads: If the coupling is subjected to shock loads or excessive stress, perform thorough inspections to check for any deformation or damage that may have occurred.
• Replace Worn Elements: Over time, the elastomeric elements of the coupling may wear out. Replace these elements when they show signs of deterioration to maintain the coupling’s performance.

It is important to follow the manufacturer’s maintenance guidelines and recommendations specific to the particular flexible flange coupling model being used. Regular maintenance not only ensures the coupling’s optimal performance but also enhances the safety of the overall mechanical system.

Standard Sizes and Specifications of Flexible Flange Couplings

Flexible flange couplings come in various sizes and specifications to accommodate different applications and torque requirements. The specific sizes and specifications may vary depending on the manufacturer and the intended use. However, there are some common standard sizes and specifications available in the market:

• Coupling Size: Flexible flange couplings are available in a range of sizes, typically measured in millimeters (mm) or inches (in). Common sizes include diameters ranging from a few millimeters to several hundred millimeters, catering to different shaft diameters.
• Torque Capacity: The torque capacity of flexible flange couplings can vary widely. Couplings with higher torque capacities are used in heavy-duty applications, while those with lower torque capacities are suitable for smaller, less demanding systems.
• Material: Flexible flange couplings can be made from various materials, including steel, aluminum, and stainless steel. The choice of material depends on factors such as the application environment, torque requirements, and the need for corrosion resistance.
• Number of Flanges: Flexible flange couplings typically have two flanges to connect two shafts. However, some designs may have more flanges to provide additional stability and alignment support.
• Flexibility: The flexibility of the coupling is crucial for accommodating misalignment. The amount of angular, axial, and parallel misalignment that the coupling can handle should be considered during the selection process.
• Operating Temperature: The temperature range within which the coupling can operate effectively should be specified. High-temperature applications may require couplings with special materials or heat-resistant designs.
• Speed Rating: Flexible flange couplings are rated for specific rotational speeds. It’s essential to ensure that the selected coupling can handle the required speed without causing vibration or premature wear.
• Backlash: Some couplings are designed to have minimal or zero backlash, which is crucial for applications requiring precise motion transfer, while others may allow for some level of backlash.
• Installation Method: The method of installation can vary between different flexible flange coupling designs. Some may require set screws or clamping elements, while others may have keyways or other attachment methods.

It’s important to consult the manufacturer’s datasheets and technical specifications to find the exact sizes and specifications of flexible flange couplings available from different suppliers. Additionally, considering the specific requirements of the application and seeking expert advice can help in selecting the right flexible flange coupling for optimal performance and longevity in the mechanical power transmission system.

Flexible Flange Coupling in Mechanical Power Transmission

A flexible flange coupling is a type of coupling used to connect two shafts and transmit mechanical power from one shaft to another. It is designed to accommodate misalignment, parallel, angular, and axial, between the connected shafts. The coupling consists of two flanges with interlocking teeth or ridges on their mating faces, and a flexible element, often made of elastomeric material, positioned between the flanges.

The function of a flexible flange coupling in mechanical power transmission is as follows:

1. Compensation for Misalignment: One of the primary functions of a flexible flange coupling is to compensate for misalignment between the shafts. Misalignment can occur due to various factors, such as manufacturing tolerances, thermal expansion, or vibrations. The flexible element allows the flanges to move relative to each other, accommodating both angular and parallel misalignments without imposing significant loads on the connected machinery.
2. Shock Absorption: The flexible element in the coupling acts as a shock absorber, dampening sudden shocks and vibrations that may arise from the equipment or system. This helps protect the machinery from damage and minimizes wear and tear, enhancing the overall service life of the system.
3. Torsional Flexibility: Flexible flange couplings offer torsional flexibility, allowing them to transmit torque smoothly between the shafts, even when the two shafts are not perfectly aligned. This capability is essential in applications where there are frequent starts, stops, or changes in load, as it reduces the risk of stress concentration and premature failure.
4. Isolation of Vibrations: Vibrations generated in one shaft due to imbalances, misalignment, or other factors can be isolated from the other shaft by the flexible element, preventing the vibrations from propagating throughout the entire system and reducing noise levels.
5. Easy Installation and Maintenance: Flexible flange couplings are relatively easy to install and maintain. The split design of the flanges allows them to be assembled around the shafts without the need to disassemble the entire system. This feature simplifies installation and reduces downtime during maintenance.

Conclusion: Flexible flange couplings play a crucial role in mechanical power transmission by providing a flexible and reliable connection between rotating shafts. Their ability to compensate for misalignment, absorb shocks, transmit torque smoothly, and isolate vibrations makes them suitable for a wide range of applications in various industries.

editor by CX 2024-03-10