Product Description
Universal coupling
Enables the mechanical jointing of pipes made of different materials and of various outside diameters
Description
Wide outside diameter range: an average of 29 mm.
High performance
– Permanent leak tight joint when compressing the gasket between the end ring and the sleeve CHINAMFG the pipe surface
– Epoxy powder coating (250 μm) and Geomet 500 Gr. B for the bolts.
Ease and speed of installation:
– Angular deflection ± 5° by side.
– Absorbs expansion and contraction.
– Accommodates misalignment.
– Important setting gap.
Conformity to standards
– EN 14525 : Ductile iron wide tolerance couplings and flange adaptors for use with pipes of different materials: ductile iron, Grey iron, Steel, PVC-U, PE, Fiber-cement.
– NF A 48-830: Foundry products – Spheroidal graphite cast iron fittings for PVC drinking water pipes under pressure,
– EN 545: Ductile iron pipes, fittings, accessories and their joints for water pipelines
– requirements and test methods,
– ISO 2531: Ductile iron pipes, fittings, and accessories and their joints for water applications.
Approval:- Drinking water approved (WRAS).
Note:
– This coupling does not resist to longitudinal forces and pipe pullout will occur. Ensure adequate restraint is provided.
– Not recommended for PE pipes.
Technical data
Range: DN 40 to 600.(Higher DN, please consult uUniversal coupling
Enables the mechanical jointing of pipes made of different materials and of various outside diameters
Description
Wide outside diameter range: an average of 29 mm.
High performance
– Permanent leak tight joint when compressing the gasket between the end ring and the sleeve CHINAMFG the pipe surface
– Epoxy powder coating (250 μm) and Geomet 500 Gr. B for the bolts.
Ease and speed of installation:
– Angular deflection ± 5° by side.
– Absorbs expansion and contraction.
– Accommodates misalignment.
– Important setting gap.
Conformity to standards
– EN 14525 : Ductile iron wide tolerance couplings and flange adaptors for use with pipes of different materials: ductile iron, Grey iron, Steel, PVC-U, PE, Fiber-cement.
– NF A 48-830: Foundry products – Spheroidal graphite cast iron fittings for PVC drinking water pipes under pressure,
– EN 545: Ductile iron pipes, fittings, accessories and their joints for water pipelines
– requirements and test methods,
– ISO 2531: Ductile iron pipes, fittings, and accessories and their joints for water applications.
Approval:- Drinking water approved (WRAS).
Note:
– This coupling does not resist to longitudinal forces and pipe pullout will occur. Ensure adequate restraint is provided.
– Not recommended for PE pipes.
Technical data
Range: DN 40 to 600.(Higher DN, please consult us)
Max. working pressure: PN 16
Temperatures: from
2. How soon can I get a price quote?
Once we know the Size, material, drive method we can provide you with 1 competitive price quote within 24 hours.
3. Can I get a sample?
Yes, the samples are free for you. But you need to offer 1 courier account NO. to afford the fee for samples shipping. The samples’ sending usually takes 5-7days.
4. How can my order produced by my brand?
Yes, you can. Pls offer your brand or LOGO design to us(.AI or.PSD format), then we could produce all goods with your brand or LOGO.
5. What’s your delivery time?
Except our legal holiday, it will take 2-4 weeks for us to finish all your orders’ production.
6. Is there a minimum order requirement?
Due to the high machine setup cost and shipping freight, our minimum order quantity is 5pcs
7. Do you have butterfly valve related accessories?
Yes, we have. We have accessories: pneumatic actuators, electric actuators, limit switches, solenoid valves, etc.
8. Will you match competitors’ prices?
If you find a lower price elsewhere for the exact same specification, we will meet or beat that price as long as it is a little higher than our cost price.
9. What are your terms of delivery?
We accept FOB, CIF etc. You can choose the 1 which is the most convenient or cost effective for you.
10. Where can I meet you by face to face?
A,Our headquarter is located in ZheJiang , if you travel to ZheJiang , you can visit our office at any time, we could pick you up from your location in ZheJiang and ZheJiang .
B,Our factories are located in ZheJiang and HangZhou, welcome to visit our factory before you cooperate with us.
C,We will attend China Spring Canton Fair and China Autumn Canton Fair every year, welcome to visit our booth at that time.
11. How can I be your sole agent in our country?
Welcome you to become our sole agent firstly. According to different countries’ demand, if your yearly purchase quantity from us can reach 10000 to 30000 pcs you could be our sole agent in your country. If you wanna know exact quantity requirement for each country, pls feel free to contact us at any time.
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Flange Couplings in Corrosive or Harsh Environments
Flange couplings can be used in a wide range of environments, including corrosive or harsh conditions, depending on the material and coating used in their construction. The choice of material is a critical factor in determining the suitability of a flange coupling for such environments.
Materials:
Stainless steel flange couplings are commonly used in corrosive environments due to their high resistance to rust and corrosion. Stainless steel contains chromium, which forms a protective oxide layer on the surface, preventing the underlying metal from being exposed to corrosive elements.
In particularly aggressive or chemically harsh environments, super alloys or specialty materials like Hastelloy or Inconel may be used for flange couplings, providing even higher corrosion resistance and chemical stability.
Coatings:
In addition to material selection, certain coatings can further enhance the resistance of flange couplings to corrosive environments. For example, coatings like zinc plating or epoxy coatings can add an extra layer of protection against corrosion.
Sealing and Protection:
Flange couplings used in harsh environments may also incorporate specialized sealing elements to prevent the ingress of contaminants, moisture, or corrosive substances. Proper sealing can significantly extend the service life of the coupling and the connected equipment.
Regular Maintenance:
While flange couplings designed for harsh environments are built to withstand corrosive elements, regular maintenance is essential to ensure their optimal performance. Regular inspections, cleaning, and lubrication, as well as prompt replacement of any damaged components, are vital to maintaining the integrity and functionality of the coupling.
Application Considerations:
When using flange couplings in corrosive or harsh environments, it is essential to consider the specific requirements of the application. Factors such as the type and concentration of corrosive substances, temperature variations, and mechanical loads should be carefully assessed to select the most suitable flange coupling for the given environment.
Conclusion:
Flange couplings can be engineered to withstand corrosive and harsh environments by using appropriate materials, coatings, and sealing techniques. With proper selection, installation, and maintenance, flange couplings can provide reliable and durable performance in challenging industrial settings.
Can Flange Couplings Be Used in Food Processing and Pharmaceutical Industries?
Yes, flange couplings can be used in food processing and pharmaceutical industries, provided they meet certain requirements and standards to ensure hygiene and product safety. These industries have stringent regulations and guidelines to prevent contamination and maintain the quality and purity of their products. When selecting flange couplings for such applications, several considerations must be taken into account:
- Material Selection: The flange coupling material must be food-grade or pharmaceutical-grade and comply with industry-specific regulations. Stainless steel, particularly austenitic grades like 316L, is commonly used due to its excellent corrosion resistance and ease of cleaning.
- Hygienic Design: Flange couplings for these industries should have a hygienic design that minimizes crevices, dead spaces, and surface roughness where bacteria or contaminants could accumulate. Smooth surfaces and seamless construction help facilitate thorough cleaning and sterilization.
- Sealing and Lubrication: Proper sealing is essential to prevent any potential leaks or ingress of contaminants. Food-grade or pharmaceutical-grade lubricants should be used to ensure that there is no risk of contamination from the coupling’s lubrication.
- Certifications and Compliance: Flange couplings intended for use in food processing and pharmaceutical industries should have relevant certifications, such as FDA (U.S. Food and Drug Administration) approval, EU regulations (e.g., EC No. 1935/2004), and compliance with industry standards like 3-A Sanitary Standards.
- Cleanability: Flange couplings should be designed for easy disassembly and cleaning to maintain the required hygiene standards. This may involve quick-release or tool-less designs that allow for frequent inspection and cleaning without impeding production processes.
- Resistant to Corrosive Cleaning Agents: In food processing and pharmaceutical industries, aggressive cleaning agents may be used. The flange coupling material should be resistant to these substances to avoid degradation and maintain the coupling’s integrity over time.
By meeting these criteria, flange couplings can be safely used in food processing and pharmaceutical applications without compromising product quality or safety. It is crucial to work with reputable manufacturers or suppliers who understand the specific requirements of these industries and can provide couplings that adhere to the necessary standards.
Limitations and Disadvantages of Flange Couplings
While flange couplings offer several advantages, they also have some limitations and disadvantages that should be considered when selecting them for a specific application:
- 1. Size and Weight: Flange couplings tend to be larger and heavier compared to some other coupling types. This can be a limitation in applications where space and weight are critical factors.
- 2. Higher Cost: Flange couplings can be more expensive to manufacture and install compared to simpler coupling designs like sleeve couplings or clamp couplings.
- 3. Complex Installation: Installing flange couplings may require more time and expertise due to their intricate design and multiple components, including bolts and gaskets.
- 4. Rigidity: Flange couplings are relatively rigid, which means they may not accommodate as much misalignment as flexible couplings. Excessive misalignment can lead to increased stress on the equipment and coupling, potentially resulting in premature failure.
- 5. Bolt Stress: Proper tightening of the bolts is crucial for the effective functioning of flange couplings. Over-tightening or under-tightening the bolts can lead to bolt fatigue or coupling slippage.
- 6. Noise and Vibration Transmission: Flange couplings, especially rigid designs, can transmit more noise and vibration compared to flexible couplings, potentially affecting the performance and longevity of connected equipment.
- 7. Maintenance: Flange couplings may require more frequent maintenance due to the presence of multiple components and the need to periodically check bolt tightness and gasket conditions.
- 8. Corrosion: Depending on the material used, flange couplings may be susceptible to corrosion in certain environments. Corrosion can compromise the integrity of the coupling and reduce its service life.
Despite these limitations, flange couplings are still widely used in various industrial applications due to their robustness, high torque capacity, and ability to handle heavy loads. Proper application, installation, and maintenance can help mitigate some of these disadvantages and ensure the reliable performance of flange couplings in a wide range of systems.
editor by CX 2024-03-03