Product Description

Double flange loose sleeve dismantling joint

 In the process of fluid transportation, the majority of engineers and operators have been troubled by the installation and maintenance of pipelines, the expansion and contraction of long-distance pipelines due to temperature differences, and the deflection of pipelines due to foundation settlement. The double flange pipeline loose sleeve compensation joint has the characteristics of short structure, reasonable design, reliable sealing, and convenient assembly and disassembly. Within a certain range, it can compensate the axial displacement of the pipeline, transmit the axial push-pull force, adjust the maximum expansion and contraction, and prevent the loosening of the pipe. It can replace expansion joints such as U-shaped pipes and bellows, and is an ideal solution to problems such as pipeline installation and expansion.
Short structure: short structure length, saving pipeline installation and maintenance space
Flexible expansion: small resistance to expansion, the maximum allowable amount of expansion and contraction can be adjusted
Safety limitation: the limit device can prevent the pipeline from loosening and leaking
Reliable sealing: “o” sealing ring, which can be easily adjusted to ensure zero leakage
Convenient loading and unloading: stud connection, simple structure, convenient installation and maintenance
Surface protection: Special coating treatment on the inner and outer surfaces, sanitary and anticorrosive.

Q: Are you trading company or manufacturer ?
A: We are factory Located In ZheJiang , China.
Q: What’s your product range?
A: We produce Butterfly valve, Gate valve, Check valve, Y strainer ,Water Controlling Valve and other Pipe Accessories .
Q: What’s Execution Standard?
A: ISO/ANSI/DIN/JIS/ EN/GOST/AS standard.
Q: What’s your Strong product ?
A: Centre Line Butterfly valve, Eccentric Butterfly valve ,Resilient Seat Gate valve, and largest size to DN3200 .
Q: How long is your delivery time?
A: Generally it is 10 days if the goods are in stock. or it is 35 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment=10000USD, 30% T/T in advance ,balance before shipment.

Signs of Wear or Failure in a Universal Coupling

Universal couplings are critical components in power transmission systems, and detecting signs of wear or impending failure is crucial to prevent equipment damage and ensure safe operation. Here are some common signs to look out for:

• Abnormal Noise: Unusual noises, such as clicking, grinding, or squeaking, during equipment operation can indicate misalignment, wear, or damaged universal coupling components.
• Vibration: Excessive vibration in the machinery may suggest misalignment or imbalance in the universal coupling or connected components.
• Visible Wear: Inspect the universal coupling visually for signs of wear, such as deformation, cracks, or visible damage to the coupling elements or shaft connections.
• Looseness: Check for any looseness in the universal coupling, shaft connections, or locking mechanisms. Loose components can lead to misalignment and accelerated wear.
• Shaft Movement: If there is axial or radial movement in the shafts during operation, it may indicate worn or damaged universal coupling components.
• Increased Operating Temperature: A rise in operating temperature beyond normal levels could be a result of friction and misalignment in the universal coupling.
• Reduced Performance: If the equipment’s performance declines, such as reduced power transmission efficiency or speed fluctuations, it may be a sign of coupling wear or failure.
• Grease Leakage: In grease-lubricated universal couplings, excessive grease leakage around the coupling seals can be an indication of seal damage or wear.
• Frequent Maintenance Issues: If the machinery equipped with a universal coupling requires frequent maintenance or repairs, it may be due to coupling issues that need attention.
• Age and Service Life: Consider the age of the universal coupling and its service life. Over time, couplings experience wear and fatigue, and older couplings may require closer inspection.

If any of these signs are observed, it is essential to take immediate action. Discontinue equipment operation, inspect the universal coupling thoroughly, and consult a qualified professional to determine the cause and plan necessary repairs or replacement. Regular maintenance and inspection can help detect potential issues early, ensuring the safe and efficient operation of the mechanical system.

How do you calculate the required size and specifications for a half coupling?

Calculating the required size and specifications for a half coupling involves considering several factors to ensure a proper fit and secure connection. Here are the steps to calculate the required size and specifications:

1. Pipe Size: Determine the size of the pipe that the half coupling will connect to. Pipe sizes are typically specified in inches, and the half coupling size should match the pipe size.

2. Pipe Material: Identify the material of the pipe, such as stainless steel, PVC, carbon steel, brass, copper, etc. The half coupling material should be compatible with the pipe material to prevent corrosion and ensure a reliable connection.

3. Pressure Rating: Determine the maximum operating pressure of the system. The half coupling should have a pressure rating that meets or exceeds the system’s operating pressure to ensure safety and performance.

4. Temperature Rating: Consider the maximum and minimum operating temperatures of the system. The half coupling material and design should be suitable for the temperature range to prevent deformation or failure.

5. Alignment and Misalignment: Evaluate the alignment and potential misalignment between the pipes. Some half couplings are designed to accommodate angular, parallel, or axial misalignment, providing flexibility in installation.

6. End Connection: Determine the type of end connection required for the half coupling, such as threaded, weld-on, or flanged. The end connection should match the corresponding connection on the pipe.

7. Corrosion Resistance: Consider the environment in which the half coupling will be installed. For corrosive environments, select a half coupling material with suitable corrosion resistance.

8. Industry Standards: Ensure that the selected half coupling complies with relevant industry standards and certifications for quality and safety.

9. Manufacturer Guidelines: Follow the manufacturer’s guidelines and recommendations for selecting the appropriate half coupling size and specifications based on the application requirements.

It is essential to consult with coupling manufacturers, suppliers, or industry experts if you are unsure about the correct size and specifications for the half coupling. Proper sizing and selection will ensure a reliable and efficient connection in the piping system.

How does a Universal Coupling Work to Transmit Torque and Rotation?

A universal coupling, also known as a universal joint or U-joint, is a mechanical device used to transmit torque and rotation between two shafts that are not in a straight line and have angular misalignment. It allows for flexible coupling between the shafts, enabling power transmission even when they are at different angles to each other.

The basic design of a single universal joint consists of two yokes, each attached to the end of the shafts to be connected. The yokes are connected by a cross-shaped intermediate component, often referred to as the spider or cross. The spider has four arms, each fitting into a yoke, creating a flexible joint.

When one shaft rotates, the spider transmits the motion to the other yoke and, consequently, to the second shaft. This mechanism allows the universal coupling to handle angular misalignment between the shafts. The universal joint can accommodate small angles of misalignment, making it ideal for applications where the shafts are not perfectly aligned.

The double universal joint, also known as the double Cardan joint, consists of two single universal joints connected end-to-end with an intermediate shaft in between. This design reduces the angular variation between the input and output shafts, providing a smoother rotation and reducing vibration in certain applications.

The constant velocity joint (CV joint) is a specialized type of universal joint that maintains a constant velocity ratio between the input and output shafts. It is commonly used in automotive drive shafts to provide smooth power transmission, especially in front-wheel-drive vehicles, where the drive shafts must adjust to changing angles as the wheels turn.

Overall, universal couplings are essential components in various mechanical systems, especially in vehicles, industrial machinery, and power transmission applications. They allow for flexible power transmission while compensating for misalignment, making them a versatile and widely used coupling solution.

editor by CX 2023-10-11