China Professional Stainless Steel DIN11851 Food Grade Sanitary Fitting Hose Coupling

Product Description

Stainless steel ISI 316 1.4408 DIN11851 female food grade sanitary fitting hose coupling

The standard of sanitary fittings are DIN11850/11851, SMS1145, 3A, RJT. Material is stainless steel ISI 316/1.4408. Sanitary coupling is connected with round nut, welding or using with ferrule. Working pressure is 10 bar. It is widely used in industries of drink, milk, food, pharmacy, beer, biological medical treatment and cosmetics. The great advantage of it is corrosion-resistant, nice mechanical polish and easy to connect and disconnect, what’s more, it is up to the sanitary standard.

Our Advantage

We are experienced as we have been in this industry as a manufacturer for more than 10 years. Both of quality and service are highly guaranteed. Absolutely prompt delivery. We can produce according to specific drawings from customers. Welcome OEM/ODM project. Strict control on quality. High efficient and well trained sale service team.  ISO9001, CE and SGS certified.

FAQ

1.Q: Are you a producer or trading company?
A: We are an experienced manufacturer. We own production line and kinds of machines.
 
2. Can you make our specific logo on the part?
Yes please provide me your logo and we will make your logo on the part.

3. Can you manufacture products according to my drawings?
Yes we can manufacturer according to client’s drawings if drawings or samples are available. We are experienced enough to make new tools.

4. Q: Can I get some samples?
A: We are honored to offer you our samples. Normally it is for free like 3-5 pcs. It is charged if the samples are more than 5 pcs. Clients bear the freight cost.

5. Q: How many days do you need to finish an order?
A: Normally it takes about 30 days to finish the order. It takes more time around CHINAMFG season, or if the order involves many kinds of different products.  

6. what kind of rubber washer do you apply to camlock couplings?
Normally we use NBR gasket.

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stainless steel coupling

How Does the Grade of Stainless Steel Used in Couplings Impact Their Performance?

The grade of stainless steel used in couplings has a significant impact on their performance and suitability for specific applications. Stainless steel is an alloy that contains varying amounts of elements like chromium, nickel, and molybdenum, which give it different properties. The most common grades of stainless steel used in couplings are:

  1. Austenitic Stainless Steel (e.g., 304, 316): Austenitic stainless steel is the most widely used grade in couplings due to its excellent corrosion resistance, high ductility, and non-magnetic properties. Grade 304 is commonly used in general-purpose applications, while grade 316 offers higher corrosion resistance, making it suitable for more aggressive environments like marine or chemical industries.
  2. Ferritic Stainless Steel (e.g., 430, 446): Ferritic stainless steel has lower corrosion resistance compared to austenitic grades but offers better resistance to stress corrosion cracking. It is used in certain coupling applications where moderate corrosion resistance is sufficient.
  3. Martensitic Stainless Steel (e.g., 410, 420): Martensitic stainless steel is known for its hardness and strength. It is used in couplings that require higher mechanical properties, but it may have reduced corrosion resistance compared to austenitic grades.
  4. Duplex Stainless Steel (e.g., 2205, 2507): Duplex stainless steel combines the properties of austenitic and ferritic grades, offering high strength and better resistance to stress corrosion cracking and pitting. It finds applications in critical coupling systems where both strength and corrosion resistance are essential.

The choice of stainless steel grade depends on the specific requirements of the coupling application. Factors such as environmental conditions, exposure to corrosive substances, temperature, and mechanical stresses must be considered when selecting the appropriate grade. For example, couplings used in marine environments may require a high-grade austenitic stainless steel like 316 to withstand saltwater corrosion, while couplings in food processing may use grade 304 for its hygienic properties and general corrosion resistance.

In summary, the grade of stainless steel used in couplings directly influences their performance in terms of corrosion resistance, strength, ductility, and suitability for various applications. Proper selection of the stainless steel grade ensures that the couplings deliver reliable and long-lasting performance in their intended operating conditions.

stainless steel coupling

Differences Between Stainless Steel Couplings and Aluminum or Carbon Steel Couplings

Stainless steel couplings, aluminum couplings, and carbon steel couplings are commonly used in various industrial applications, but they differ in their material properties, performance characteristics, and suitability for specific environments. Here are the key differences between these types of couplings:

  1. Material Composition:
  2. – Stainless Steel Couplings: Stainless steel couplings are made from alloyed steel containing a minimum of 10.5% chromium. This chromium content creates a passive oxide layer that provides excellent corrosion resistance.

    – Aluminum Couplings: Aluminum couplings are made from aluminum, a lightweight metal known for its high strength-to-weight ratio. Aluminum offers good corrosion resistance but is not as resistant as stainless steel.

    – Carbon Steel Couplings: Carbon steel couplings are made from plain carbon steel, which has a higher carbon content. While carbon steel offers good strength and toughness, it is more susceptible to corrosion than stainless steel or aluminum.

  3. Corrosion Resistance:
  4. – Stainless Steel Couplings: Stainless steel couplings offer the highest level of corrosion resistance among the three materials. They are well-suited for use in corrosive environments, such as marine applications or food processing, where protection against rust and chemical exposure is essential.

    – Aluminum Couplings: Aluminum couplings provide moderate corrosion resistance, but they are not recommended for highly corrosive environments or applications with exposure to acidic or alkaline substances.

    – Carbon Steel Couplings: Carbon steel couplings have the lowest corrosion resistance of the three materials and may require additional coatings or treatments to protect against rust and corrosion.

  5. Strength and Durability:
  6. – Stainless Steel Couplings: Stainless steel couplings offer excellent strength and durability, making them suitable for heavy-duty applications and environments with high mechanical loads.

    – Aluminum Couplings: Aluminum couplings are lightweight and have good strength but may not be as durable as stainless steel or carbon steel couplings.

    – Carbon Steel Couplings: Carbon steel couplings provide good strength and toughness, but they may not be as durable as stainless steel couplings in corrosive environments.

  7. Weight:
  8. – Stainless Steel Couplings: Stainless steel couplings are heavier than aluminum couplings but comparable to or slightly lighter than carbon steel couplings.

    – Aluminum Couplings: Aluminum couplings are the lightest among the three materials, making them suitable for applications where weight reduction is a priority.

    – Carbon Steel Couplings: Carbon steel couplings are heavier than aluminum couplings but offer higher strength and load-bearing capacity.

  9. Temperature Tolerance:
  10. – Stainless Steel Couplings: Stainless steel couplings can withstand a wide range of temperatures, making them suitable for both high-temperature and cryogenic applications.

    – Aluminum Couplings: Aluminum couplings have good thermal conductivity but may not be suitable for extremely high-temperature applications.

    – Carbon Steel Couplings: Carbon steel couplings have good temperature tolerance but may be limited in extremely high-temperature or cryogenic environments.

The choice of coupling material depends on the specific requirements of the application, such as the operating environment, load capacity, and corrosion resistance needed. Stainless steel couplings are often preferred for applications where corrosion resistance and durability are paramount, while aluminum couplings are chosen for their lightweight properties. Carbon steel couplings find use in applications requiring good strength and moderate corrosion resistance.

stainless steel coupling

Proper Installation of Stainless Steel Couplings for Optimal Performance

Installing a stainless steel coupling correctly is essential for ensuring its optimal performance and longevity. Follow these steps for proper installation:

  1. Inspect the Coupling: Before installation, carefully inspect the coupling and its components for any damage or defects. Ensure that it matches the required specifications for the application.
  2. Prepare the Shafts: Clean and degrease the shafts to ensure a clean surface for coupling attachment. Remove any debris or contaminants that could affect the coupling’s performance.
  3. Align the Shafts: Make sure the shafts are properly aligned to minimize misalignment, which can cause stress on the coupling and lead to premature failure. Use alignment tools to achieve precise alignment.
  4. Apply Lubrication: Apply a thin layer of appropriate lubricant to the mating surfaces of the coupling halves and the shafts. This will reduce friction during installation and future operation.
  5. Assemble the Coupling: Carefully position the coupling halves onto the shafts, ensuring that they are fully engaged and aligned. Follow the manufacturer’s instructions for assembly, including torque specifications for clamping screws.
  6. Tighten Clamping Screws: Gradually tighten the clamping screws in a criss-cross pattern to ensure even pressure distribution. Use a torque wrench to achieve the recommended torque value specified by the manufacturer.
  7. Check Runout: After installation, check for any runout or eccentricity by rotating the coupling and observing any visible movement or vibration. Address any runout issues promptly.
  8. Perform a Trial Run: Before putting the coupling into full operation, perform a trial run to ensure smooth operation and check for any signs of abnormal behavior or noise.
  9. Regular Inspections: Implement a maintenance schedule to regularly inspect the coupling for wear, corrosion, or misalignment. Address any issues promptly to prevent further damage.

Properly installing a stainless steel coupling according to these guidelines will help maximize its performance, reliability, and service life in the mechanical system.

China Professional Stainless Steel DIN11851 Food Grade Sanitary Fitting Hose Coupling  China Professional Stainless Steel DIN11851 Food Grade Sanitary Fitting Hose Coupling
editor by CX 2024-05-15

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