China high quality OEM UL&FM Approved Ductile Iron Grooved Fittings Flexible Coupling

Product Description

Product Description

1.Product Name:  

Flexible coupling for connecting fire protection pipe

2.Material: 

Ductile iron 

3.Dimension : DN25-300(1″-12″) or as customer’s requirement
 

RigidCoupling
 
Nominal Size mm/in Pipe O.D mm/in Working Pressure PSI/MPa Dimensions mm/in
Ø L H
25
1
33.7
1.327
300
2.07
55
2.165
95
3.74         
45
1.772
32 
1¼           
42.4
1.669
300
2.07
65        2.559 105          4.133 45
1.772
50
2
60.3 
2.375
300
2.07
82
3.228
124
4.882
45
1.772
65 
2½     
73.0      
2.875
300 
2.07
98
3.858     
141
5.551   
45 
1.772   
100 
4
114.3
4.500       
300 
2.07      
142
5.59
190
7.48
49
1.929
125
5.5OD
139.7
5.500
300
2.07       
168
6.614
218
8.583   
49 
1.929
150
6
168.3 
6.625       
300  
2.07
198
7.795    
248
9.764   
49
1.929    
200      
8
219.1
8.625       
300   
2.07
256.
10.079
320 
12.598
60  
2.362
300  
12
323.9  
12.752      
300  
2.07     
380    
14.961
454 
17.874
64  
2.52     

4.Surface Treatment : finish : epoxy , painted and galvanized 
                                       
color : red , orange , blue or according to your requirements 

5.Advange : Easy to assemble and disassembel, easy to operate

6. Usage

1) Automatic sprinkler system for fire protection on commercial, civil and municipal constructions like 

water supplying, gas supplying, heat supplying, etc

2) Industrial pipeline system on shipping, mine, oil field, textile, powder plant, etc.

3) Pipeline system on subway station, railway station, airport, seaport, bridge, etc.

 7. Advantages:

1. Low price,high quality & fast delivery & strict inspection .

2. The fastest delivery

3. The lowest price

4. Most comprehensive standards and materials for your choice. 5.100% export.

6. Our products EXPORT to Africa, Oceania, midle east, eastern Asia, Western Europe etc.                       
 

Detailed Photos

Workshop

Certifications

Packaging & Shipping

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flexible coupling

What are the temperature and environmental limitations of flexible couplings?

Flexible couplings are designed to operate within certain temperature and environmental limitations to ensure optimal performance and longevity. The specific limitations may vary depending on the type and material of the coupling. Here are the general considerations:

  • Temperature Range: The temperature range in which a flexible coupling can operate is crucial. High temperatures can affect the material properties, leading to reduced flexibility and potential failure. Low temperatures can cause the material to become brittle and lose its ability to accommodate misalignment. It’s essential to choose a coupling suitable for the intended temperature range of the application.
  • Corrosive Environments: In environments with corrosive substances, such as acids, chemicals, or saltwater, it is essential to select a flexible coupling made of materials that are resistant to corrosion. Stainless steel and certain polymers are commonly used in such environments to prevent degradation and maintain the coupling’s integrity.
  • Hygienic Environments: For applications in food processing, pharmaceuticals, or cleanrooms, hygienic design is critical. Flexible couplings used in these environments should be easy to clean, made of materials that are non-toxic and resistant to contamination, and free from crevices or pockets where debris can accumulate.
  • Explosive or Hazardous Atmospheres: In environments where explosive or hazardous gases, vapors, or dust are present, flexible couplings with anti-static properties or explosion-proof certifications may be necessary to prevent the risk of ignition and ensure safety.
  • Outdoor Applications: For outdoor installations, flexible couplings should be able to withstand exposure to weather conditions, UV radiation, and temperature fluctuations. Couplings with weather-resistant properties are suitable for such applications.
  • High-Speed Applications: In high-speed applications, the centrifugal forces on the flexible coupling increase with rotational speed. Couplings designed for high-speed applications should be balanced to minimize vibrations and ensure smooth operation.
  • Shock and Impact Loads: Flexible couplings used in applications with significant shock or impact loads should have the ability to dampen and absorb these forces to protect connected equipment from damage.
  • Continuous vs. Intermittent Duty: Some flexible couplings are designed for continuous-duty applications, while others are suitable for intermittent duty or start-stop operations. The coupling’s design and material should match the specific duty cycle requirements.

It is essential to consult with the coupling manufacturer or supplier to understand the temperature and environmental limitations of a specific coupling model. Proper selection and application of flexible couplings within their defined limitations contribute to reliable and efficient performance in various industrial and mechanical systems.

flexible coupling

What are the common signs of wear and failure in flexible couplings?

Flexible couplings can experience wear and failure over time, which may lead to operational issues and potential equipment damage. Some common signs of wear and failure in flexible couplings include:

  • Excessive Vibrations: An increase in vibrations during operation can indicate wear or misalignment in the flexible coupling. Excessive vibrations can also lead to additional wear on connected equipment.
  • Strange Noises: Unusual noises, such as squealing, rattling, or clunking sounds, may indicate misalignment, fatigue, or damaged elements in the flexible coupling.
  • Increased Heat: If a flexible coupling is operating at a higher temperature than usual, it could indicate increased friction due to wear or improper lubrication.
  • Visible Damage: Physical inspection may reveal visible signs of wear, such as cracks, tears, or distortion in the flexible coupling’s components.
  • Reduced Performance: A decrease in the performance of the connected machinery, such as lower speed or torque transmission, may be a sign of coupling wear.
  • Looseness or Play: Excessive play or looseness in the coupling may indicate worn or damaged components, which can lead to misalignment and decreased efficiency.
  • Leakage: In the case of fluid-filled couplings, leakage of the fluid can indicate seal damage or wear in the coupling.
  • Cracks or Corrosion: Cracks or signs of corrosion on metallic components of the coupling can indicate material fatigue or exposure to harsh environmental conditions.
  • Uneven Wear: Uneven wear patterns on coupling elements or unusual wear at specific points can be indicative of misalignment or excessive torque.
  • Increased Friction: If the flexible coupling starts to exhibit increased resistance or friction during operation, it may be a sign of wear or inadequate lubrication.

Regular maintenance and inspection are essential to identify these signs of wear and failure early on and prevent further damage to the flexible coupling and connected equipment. Timely replacement or repair of worn or damaged components can help maintain the reliability and efficiency of the system.

flexible coupling

What role does a flexible coupling play in reducing downtime and maintenance costs?

A flexible coupling plays a significant role in reducing downtime and maintenance costs in industrial machinery and rotating equipment. Here are the key ways in which flexible couplings contribute to these benefits:

  • Misalignment Compensation: One of the primary functions of a flexible coupling is to accommodate misalignment between two connected shafts. Misalignment can occur due to various factors such as thermal expansion, foundation settling, or manufacturing tolerances. By allowing for misalignment, flexible couplings reduce the transmission of harmful forces and stresses to connected components, minimizing wear and preventing premature failures that could lead to costly downtime and repairs.
  • Vibration Damping: Flexible couplings have inherent damping properties due to the elastomeric or flexible elements they incorporate. These elements absorb and dissipate vibration and shock loads that may arise from the operation of rotating machinery. By dampening vibrations, flexible couplings protect the connected equipment from excessive wear and fatigue, extending their service life and reducing the need for frequent maintenance or replacement.
  • Shock Load Absorption: In applications where sudden loads or shocks are common, such as in heavy machinery or high-speed equipment, flexible couplings act as shock absorbers. They can absorb and dissipate the impact energy, preventing damage to the machinery and minimizing downtime caused by unexpected failures or breakdowns.
  • Easy Installation and Alignment: Flexible couplings are designed for ease of installation and alignment. Unlike rigid couplings that require precise shaft alignment, flexible couplings can tolerate some degree of misalignment during installation. This feature simplifies the setup process, reduces installation time, and lowers the risk of misalignment-related issues, ultimately minimizing downtime during initial installation or replacement of couplings.
  • Reduced Maintenance Frequency: The ability of flexible couplings to handle misalignment and dampen vibrations results in reduced wear on bearings, seals, and other connected components. Consequently, the frequency of maintenance intervals can be extended, reducing the need for frequent inspections and component replacements. This directly translates to lower maintenance costs and less downtime for maintenance tasks.
  • Equipment Protection: By reducing the transmission of shock loads and vibrations, flexible couplings act as protective barriers for connected equipment. They help prevent catastrophic failures and subsequent damage to expensive machinery, avoiding unplanned shutdowns and costly repairs.

Overall, flexible couplings are critical components that improve the reliability and longevity of rotating equipment. Their ability to handle misalignment, dampen vibrations, and protect against shock loads contributes to reduced downtime, lower maintenance costs, and increased productivity in industrial applications.

China high quality OEM UL&FM Approved Ductile Iron Grooved Fittings Flexible Coupling  China high quality OEM UL&FM Approved Ductile Iron Grooved Fittings Flexible Coupling
editor by CX 2024-04-26


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