Product Description
Material:
Stainless steel : F304,F316L,F310S,F317L,F321,F347
carbon steel:A105,A106,A53,LF2,16MN,A234 WPB
Alloy steel: F5.F9,F11,F22
Duplex Steel: F44,F51,F53,F55,F60
Special steel: 904L,N04400,N08810,N 0571 1,N 0571 5
Standard:GB/T 7306,12716,14383,14626
ANSI/ASME B 1.20.1,B16.11
MSS SP-79, 83, 95, 97 JIS B5713,B2316.
Pressure:
Threaded types:2000/3000/6000LBS
Socket weld types:3000/6000/9000LBS
Butt weld types:SCH40/SCH80/SCH160/XXS
Types:threaded fitting(elbow, coupling, cross, half coupling, bushing, plug, etc) and socket welding fitting(elbow, coupling, cross, outlet, tee…)
Application:Petroleum, chemical, machinery, electric power, shipbuilding, papermaking, construction, etc
Chemical composition
| Grade | C ≤ | Si ≤ | Mn ≤ | P ≤ | S ≤ | Ni ≤ | Cr ≤ |
| 201 | 0.12 | 0.75 | 7.00 | 0.045 | 0.045 | 1.00-1.28 | 13.70-15.70 |
| 202 | 0.15 | 1.00 | 2.25 | 0.045 | 0.045 | 4.07-4.17 | 14.00-16.00 |
| 304 | 0.08 | 0.75 | 2.00 | 0.045 | 0.03 | 8.00-11.00 | 18.00-20.00 |
| 304L | 0.035 | 0.75 | 2.00 | 0.045 | 0.03 | 8.00-13.00 | 18.00-20.00 |
| 309 | 0.15 | 0.75 | 2.00 | 0.045 | 0.03 | 12.00-15.00 | 22.00-24.00 |
| 310S | 0.08 | 1.50 | 2.00 | 0.045 | 0.03 | 19.00-22.00 | 24.00-26.00 |
| 316 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 10.00-14.00 | 16.00-18.00 |
| 316L | 0.035 | 0.75 | 2.00 | 0.045 | 0.03 | 10.00-15.00 | 16.00-18.00 |
| 321 | 0.04-0.10 | 0.75 | 2.00 | 0.045 | 0.03 | 9.00-13.00 | 17.00-20.00 |
| 405 | 0.08 | 0.75 | 1.00 | 0.045 | 0.03 | 0.06 | 11.5-13.5 |
| 409 | 0.089 | 1.00 | 1.00 | 0.045 | 0.05 | 0.06 | 10.50-11.75 |
| 410 | 0.15 | 0.75 | 1.00 | 0.045 | 0.03 | 0.06 | 11.5-13.5 |
| 420 | 0.16-0.25 | 1.00 | 1.00 | 0.040 | 0.03 | 0.06 | 12.00-14.00 |
| 430 | 0.12 | 0.75 | 1.00 | 0.045 | 0.03 | 0.06 | 16.00-18.00 |
| 904L | 0.02 | 1.0 | 2.00 | 0.045 | 0.03 | 23.00-28.00 | 19.00-23.00 |
How do you Properly Install and Secure a Half Coupling to Ensure a Leak-Free Connection?
Properly installing and securing a half coupling is essential to ensure a leak-free and reliable connection in piping and plumbing systems. Follow these steps to achieve a secure joint:
- Cut and Prepare the Pipe: Start by cutting the larger pipe to the desired length, ensuring a clean and even edge. Use a deburring tool or file to remove any sharp edges or burrs that could interfere with the coupling’s sealing surface.
- Check Threads and Fit: For threaded half couplings, inspect the internal threads of the coupling and the external threads of the pipe. Make sure they are clean and free from debris or damage. Ensure that the threads match and fit properly, as any misalignment can lead to leaks.
- Apply Thread Sealant: Before attaching the half coupling, apply a suitable thread sealant, such as Teflon tape or pipe dope, to the male threads of the pipe. The sealant helps prevent leaks by filling any gaps or imperfections in the threads.
- Attach the Half Coupling: Thread the half coupling onto the pipe’s male threads carefully. Use a wrench to ensure a snug fit, but avoid over-tightening, as it may damage the threads or cause stress on the joint.
- For Socket Weld or Butt Weld Couplings: For socket weld half couplings, insert the smaller pipe into the coupling’s socket and align it properly. For butt weld half couplings, weld the coupling to the larger pipe’s end with proper welding techniques and safety measures. Follow industry standards for welding procedures and ensure a smooth and consistent weld for a leak-free joint.
- Check for Leaks: After installation, perform a leak test to ensure the joint is secure. Apply a pressure test or use a suitable leak-detection method to verify the connection’s integrity. If any leaks are detected, disassemble the joint, inspect for issues, and reassemble following the proper steps.
- Consider Thermal Expansion: In applications with temperature variations, consider the thermal expansion and contraction of the pipes. Provide sufficient flexibility in the system to accommodate these changes and prevent stress on the joints, which could lead to leaks over time.
- Follow Manufacturer’s Instructions: Always follow the manufacturer’s instructions and recommendations for the specific type and material of the half coupling being used. Different couplings may have unique installation requirements and torque specifications.
Proper installation and securing of a half coupling are crucial for maintaining the integrity of the piping or plumbing system and ensuring a leak-free connection. Following these steps and adhering to industry standards will help achieve a reliable and durable joint.
Can a Half Coupling be Used in both Residential and Industrial Applications?
Yes, a half coupling can be used in both residential and industrial applications, depending on the specific requirements of the plumbing or piping system. Half couplings are versatile fittings that find application in various settings due to their design and functionality.
Residential Applications: In residential plumbing systems, half couplings can be utilized for several purposes. They are commonly used in household plumbing repairs and installations where a secure connection between pipes or components is needed. For example, half couplings can be used to attach fixtures such as faucets, showerheads, or water heaters to the water supply lines. Additionally, they are employed in various DIY projects and renovations around the house, providing a reliable and leak-resistant connection between pipes of different sizes or materials.
Industrial Applications: Half couplings are extensively used in industrial applications due to their ability to connect pipes and components in a range of systems. In industrial settings, half couplings are employed in piping systems for water, air, chemicals, gases, and other fluids. They are commonly found in power plants, chemical processing plants, refineries, petrochemical facilities, and manufacturing plants, among others. These couplings play a crucial role in creating reliable joints for conveying materials and maintaining the overall integrity of the industrial processes.
While half couplings are suitable for both residential and industrial applications, there are certain considerations to keep in mind. For residential use, the materials and pressure ratings of the half couplings should be appropriate for household water supply systems, which generally operate at lower pressures compared to industrial systems. In industrial applications, the materials, dimensions, and pressure ratings of the half couplings must meet the specific requirements of the industrial processes, which often involve higher pressures and harsher environmental conditions.
Regardless of the application, it is essential to select high-quality half couplings that comply with relevant industry standards and are appropriate for the intended use. Proper installation and maintenance of the couplings are also crucial to ensure a leak-free and reliable connection in both residential and industrial settings.
What are the Various Types of Half Couplings and Their Specific Applications?
Half couplings come in different types, each designed to cater to specific applications and requirements in piping and plumbing systems. The various types of half couplings and their specific applications are as follows:
- Threaded Half Couplings: Threaded half couplings have internal threads on one end, allowing for easy connection to pipes with matching external threads. These couplings are commonly used in applications where a secure and leak-proof joint is needed, such as connecting valves, instruments, or equipment to the pipeline.
- Socket Weld Half Couplings: Socket weld half couplings have a socket on one end, which allows for the insertion of the pipe without threading. The joint is then welded for a strong and permanent connection. Socket weld half couplings are widely used in high-pressure applications and systems that require frequent disassembly.
- Butt Weld Half Couplings: Butt weld half couplings are designed for butt welding, which involves welding the coupling directly to the larger pipe end. The other end can be used to attach a smaller pipe. These couplings are commonly used in critical applications where a smooth and continuous inner surface is required to prevent turbulence and pressure losses.
- Reducing Half Couplings: Reducing half couplings are used when a transition between different pipe sizes is needed. One end of the coupling has larger threads or a larger socket to accommodate a larger pipe, while the other end has smaller threads or a smaller socket to connect a smaller pipe. These couplings are commonly used in systems that require a change in pipe size, such as reducing the flow rate or connecting equipment with different pipe sizes.
- Mechanical Grip Half Couplings: Mechanical grip half couplings use a mechanical mechanism to grip and secure the smaller pipe without welding or threading. They are commonly used in temporary connections or situations where frequent disassembly is necessary, such as in temporary test setups or during equipment maintenance.
The choice of half coupling type depends on the specific application, the pipe materials, the operating conditions, and the required joint strength. It is essential to follow industry standards and guidelines when selecting the appropriate type of half coupling to ensure the safety and efficiency of the piping or plumbing system.
In summary, various types of half couplings cater to different needs in piping and plumbing systems. Whether for permanent connections, temporary applications, or transitions between different pipe sizes, half couplings offer versatile solutions for joining pipes securely and efficiently.
editor by CX 2023-08-08