China wholesaler Durable PPR Flexible Union PVC Pipe Coupling for Pipe Union Coupling

Product Description

PRODUCT DISPLASY

PRODUCT FEATURES
SAM-UK PIPE,QUALITY ASSURANCE
1. CHINAMFG PPR pure raw material, there is no pungent smell when they are connected. It only produce carbon dioxide and water after combustion.
2. Product advantages: Light material ; good temperature and pressure stability; safe connection, reliable and convenient performance, ; small friction in pipe system; good hydraulic conditions; healthy performance, no odor, environmental and healthy; excellent noise insulation and chemical resistance.

pipeline connection technology:
Since the outermost layer of PP-R pipe materials, high-performance fiber composite pipe PP-R pipe fittings available hot-melt socket connection forming a pipeline system. When connected, requiring melt temperature reached to 260 degrees Celsius, pipe and fittings for surface cleaning after a suitable time while heating the fuser and can be plugged low melt connection cost, simple operation, safe and reliable.It can effectively prevent the occurrence of junction leakage.

   

 
special reminder :
Pipe and fittings are used for the connection,which are provided by “SAM-UK”. Because different manufacturers may differ from the choice of materials. So it is unable to be guaranteed the quality of the welding connection. Strongly recommended to use special hot-melt welding equipment with temperature control, to prevent welding too hot or too cold, which may affect the quality of welding.

CHINAMFG PPR pipe, Green, safe and reliable 
Mainly our raw materials are imported.And our products are manufactured by professional equipment. Professional design and every detail of pipe fittings, piping system,we keep each step. They are safe, secure, reliable and effective solution to the hidden home improvement project;they are easy to leak pipes, burst pipes and other hazards.
 
Production process and line control

Orderly management workshop

Precautions
Hydrostatic pressure test
During our decoration, after the completion of welding pipes,we need inspect the quality of pipes, that is we often say the pressure test. The construction of pipes belongs to hidden works in the decoration. Once hidden engineering problems appear, the consequences is incalculable. If the pipe is buried in the ground or floor tiles, the cost of reconstruction will be quite large.
1. Pipes installed, the appearance check is qualified, then the pressure test can be carried out;
2. hot melt or fused connection pipe, the hydrostatic test after 24 hours of the connection;
3. Medium is clean water at room temperature. When in a large system, it can be layered, parted to test the pressure.
Water pressure / method:
1. The hot and cold water connected together by hose. Then hot and cold water forms a ring, pressure testing device connected to any outlet,the pressure pointer is 0. When all the water pipelines installed, the the pressure test could begin. To block all of the plugs and close the water inlet valve manifold before the test.
2. When we do the test, shake the jack lever until the gauge pointer around 0.9-1.0, it is also said that the present pressure is 3 times than the normal water pressure.
3.Keep this pressure value for a certain time, Different time ,the water load time is different, PPR, aluminum PPR, PPR and other steel-plastic pipe welding time is 30 minutes. Aluminum pipe, that’s also the galvanized pips, it needs 4 hours.
PPR pipeline construction safety:
 
1.PPR pipe cross resistance to ultraviolet radiation, not suitable for outdoor surface mounted installation. If they really need, you need to take shielding measures.
2. PPR pipe’s low temperature impact resistance is poor, it should be vent pipes to prevent freezing, swelling
and crack the pipes in winter.
3. Waterproof toilet area, often using asphalt and other petrochemical substances. When it is doing waterproof needs shelter on pipeline protection.
                                                                                                                                                                                   

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flexible coupling

What are the torque and speed ratings for different sizes of flexible couplings?

The torque and speed ratings of flexible couplings can vary depending on their size, design, and material. Manufacturers typically provide specifications for each specific coupling model to ensure it is suitable for the intended application. Below are some general considerations regarding torque and speed ratings for different sizes of flexible couplings:

Torque Ratings:

The torque rating of a flexible coupling is the maximum amount of torque it can reliably transmit without experiencing excessive deformation or failure. It is essential to choose a coupling with a torque rating that exceeds the torque requirements of the application to ensure proper operation and avoid premature wear. Torque ratings are typically specified in Nm (Newton-meters) or lb-ft (pound-feet).

The torque capacity of a flexible coupling can increase with its size and design. Larger couplings, which have more substantial components and a larger flexible element, often have higher torque ratings compared to smaller couplings. Additionally, couplings with a more robust design, such as metallic couplings, generally have higher torque capacities compared to elastomeric couplings.

Speed Ratings:

The speed rating of a flexible coupling is the maximum rotational speed it can withstand while maintaining its structural integrity and performance. It is critical to select a coupling with a speed rating suitable for the application’s operating speed to avoid excessive wear and potential coupling failure. Speed ratings are typically specified in revolutions per minute (RPM).

Like torque ratings, the speed rating of a flexible coupling can be influenced by its size, design, and material. Larger couplings with more robust construction can often handle higher rotational speeds compared to smaller couplings. Metallic couplings, with their stiffer and more precise design, can also have higher speed ratings compared to elastomeric couplings.

Consulting Manufacturer Specifications:

To determine the torque and speed ratings for specific sizes of flexible couplings, it is essential to consult the manufacturer’s product specifications or technical datasheets. These documents provide detailed information about the coupling’s capabilities, including torque and speed ratings for each available size and model.

Application Considerations:

When selecting a flexible coupling, it is crucial to consider the torque and speed requirements of the specific application. Factors such as the power transmitted, the rotational speed of the machinery, and any transient or shock loads should be taken into account to ensure the selected coupling can handle the demands of the system.

Summary:

The torque and speed ratings of flexible couplings can vary based on their size, design, and material. Manufacturers provide specific torque and speed ratings for each coupling model to ensure their suitability for different applications. Consulting manufacturer specifications and considering the application’s requirements are vital in selecting the right flexible coupling that can handle the torque and speed demands of the mechanical system.

flexible coupling

Can flexible couplings be used in the aerospace industry for critical applications?

Flexible couplings can be used in the aerospace industry for certain critical applications, but their usage is limited and carefully considered due to the stringent requirements and safety standards in the aerospace field. Here are some key points to consider:

  • Specific Applications: In the aerospace industry, flexible couplings are primarily used in non-flight-critical systems or non-safety-critical applications. They are commonly found in auxiliary equipment, ground support systems, and non-flight propulsion systems.
  • Weight and Space Constraints: Weight and space are crucial factors in aerospace applications. Flexible couplings must be lightweight and compact to minimize the impact on the overall weight and size of the aircraft or spacecraft.
  • High Reliability Requirements: Aerospace systems demand high reliability and fault tolerance. Flexible couplings used in critical applications must meet stringent reliability standards and undergo rigorous testing and certification to ensure their performance under extreme conditions.
  • Material Selection: Aerospace-grade materials are necessary to withstand the demanding environment of aerospace applications. These materials should have high strength-to-weight ratios, corrosion resistance, and excellent mechanical properties to handle the stresses and forces experienced during operation.
  • Certifications: Flexible couplings used in the aerospace industry must adhere to specific certifications and standards, such as those set by organizations like the Federal Aviation Administration (FAA) in the United States or the European Union Aviation Safety Agency (EASA) in Europe.
  • Redundancy and Safety Measures: In critical systems, redundancy and safety measures are paramount. Flexible couplings used in aerospace applications must be designed with redundancy features to ensure the system’s continued functionality in the event of a failure.
  • Temperature and Environmental Considerations: Aerospace systems experience a wide range of temperatures and environmental conditions. Flexible couplings must be able to operate reliably in extreme temperatures, high altitudes, and other challenging environments encountered during flight or space missions.

While flexible couplings have their place in certain aerospace applications, flight-critical and safety-critical systems typically rely on rigid, precision-engineered couplings. These rigid couplings offer higher levels of torque transmission and precision but require careful alignment and installation.

Ultimately, the selection of flexible couplings for aerospace applications must undergo a thorough engineering evaluation and be approved by the relevant regulatory authorities to ensure the highest level of safety and performance in critical aerospace systems.

flexible coupling

How does a flexible coupling protect connected equipment from shock loads and vibrations?

Flexible couplings play a crucial role in protecting connected equipment from shock loads and vibrations by providing damping and isolation capabilities. When machines or mechanical systems experience sudden shock loads or vibrations, the flexible coupling acts as a buffer, absorbing and dissipating the impact, thereby reducing the transmitted forces and protecting the equipment. Here’s how flexible couplings achieve this:

  • Damping of Vibrations: Flexible couplings are often made from materials that exhibit damping properties. When vibrations are transmitted through the shafts, the flexible coupling’s material can absorb a portion of the vibrational energy, converting it into heat. This dissipation of energy helps reduce the amplitude of the vibrations and prevents them from propagating further into the connected equipment.
  • Vibration Isolation: In addition to damping vibrations, flexible couplings also offer a degree of vibration isolation. They are designed to decouple the two shafts, which means that vibrations occurring on one shaft are not directly transmitted to the other shaft. This isolation effect prevents vibrations from propagating across the entire system and minimizes the impact on sensitive equipment or nearby components.
  • Shock Absorption: When the connected machinery experiences sudden shock loads, such as during a startup or abrupt changes in load, the flexible coupling can act as a shock absorber. The coupling’s design allows it to deform slightly under the impact, absorbing and distributing the shock energy. This prevents the shock from being directly transferred to the connected equipment, reducing the risk of damage or premature wear.
  • Misalignment Compensation: Flexible couplings are capable of compensating for misalignment between the shafts. Misalignment can lead to additional stresses and vibrations in the system. By allowing for some degree of angular, parallel, and axial misalignment, the flexible coupling reduces the forces transmitted to the connected equipment and the supporting structures.
  • Reduction of Resonance Effects: Resonance is a phenomenon that occurs when the natural frequency of a system matches the frequency of external vibrations, leading to amplified vibrations. Flexible couplings can help avoid resonance effects by altering the system’s natural frequency and providing some level of flexibility that damps the resonance response.

By incorporating a flexible coupling into the drivetrain or power transmission system, equipment manufacturers and operators can significantly improve the reliability and longevity of connected machinery. The coupling’s ability to dampen vibrations, isolate shocks, and compensate for misalignment contributes to a smoother and more stable operation, reducing maintenance requirements and enhancing overall system performance.

In summary, flexible couplings act as protective elements, shielding connected equipment from shock loads and vibrations. Their ability to dampen vibrations, isolate shocks, and compensate for misalignment contributes to a smoother and more reliable operation of various mechanical systems.

China wholesaler Durable PPR Flexible Union PVC Pipe Coupling for Pipe Union Coupling  China wholesaler Durable PPR Flexible Union PVC Pipe Coupling for Pipe Union Coupling
editor by CX 2024-03-26


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