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DIN 11850 Hygienic Chain Blind Nut

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Offered to you with the Atech brand

The Stainless Chain Blind Nut is a secure connecting component used in pipe systems and various industrial applications. Its manufacture from high-quality stainless steel provides excellent resistance to corrosion and wear, ensuring long service life and reliable performance in demanding conditions. The chain design prevents the nut from being lost and makes the assembly process easier. This feature is especially practical during maintenance and repair operations. Stainless Chain Blind Nuts are preferred in various industrial applications such as water treatment, food processing, petrochemical, and HVAC systems. Available in different sizes and thread options, these nuts increase the security of connections and support the overall efficiency of systems. With their durable construction and high performance, they stand out as an indispensable component in industrial systems.
Material
304/316
Standard
DIN
Size Range
DN40-DN100"

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Key Features

  • Manufactured in accordance with the DIN 11850 standard: Provides full compatibility with hygienic stainless steel pipe systems and offers safe, trouble-free installation.
  • Stainless Steel Material (AISI 304 / AISI 316L): Provides superior resistance to corrosion, chemicals, moisture, and high temperatures, ensuring long service life.
  • Chain Safety Design: Prevents the blind nut from being lost during maintenance and cleaning, providing ease of use and operational safety.
  • High Sealing Performance: Provides reliable and long-lasting sealing with EPDM, Silicone (VMQ), PTFE, Viton (FKM), and NBR gasket options.
  • Hygienic Design: Its smooth surface reduces product residue buildup, helps prevent bacterial formation, and supports hygiene standards.
  • Easy Installation and Removal: Thanks to the threaded connection structure, it can be installed and removed quickly, shortening maintenance and service times.
  • Compatible with CIP and SIP Systems: Suitable for in-place cleaning and sterilization processes, it can be safely used in hygienic production processes.
  • High Corrosion Resistance: Offers reliable performance in humid, chemical, and harsh process environments.
  • Wide Size Options: Thanks to different diameter options in the DIN 11850 standard, it is compatible with many hygienic piping applications.
  • Easy Maintenance: Thanks to its chain structure, the blind nut always remains at the connection point, eliminating the risk of loss and simplifying service operations.
  • Long Service Life: Thanks to its durable stainless steel construction and quality workmanship, it provides reliable performance for many years under intensive industrial use conditions.

Use Cases

  • Food and Beverage Industry: For closing unused connection points in milk, fruit juice, beverage, syrup, and liquid food production lines.
  • Dairy and Dairy Products Facilities: For maintaining hygienic connections in milk, yogurt, cheese, cream, and butter production processes.
  • Pharmaceutical Industry: For safely closing open connection points in sterile process lines, tanks, and reactors.
  • Biotechnology Facilities: For maintaining hygienic connections in fermentation systems and bioprocess equipment.
  • Cosmetics Industry: In production facilities for shampoo, cream, lotion, and liquid cosmetics.
  • Chemical Industry: For closing unused connections in hygienically demanding chemical process lines.
  • Water Treatment Systems: In pure water (PW), ultra pure water (WFI), and process water installations.
  • CIP and SIP Systems: For isolating specific lines during cleaning and sterilization processes.
  • Tank and Process Equipment: In service connections of tanks, pumps, valves, filters, heat exchangers, and filling systems.
  • Maintenance and Service Applications: For hygienically closing connection points after sampling, maintenance, or cleaning.

Specifications

Material
AISI 304, AISI 304L, AISI 316L Stainless Steel
Connection Standard
DIN 11850
Connection Type
Threaded Blind Nut (Chain)
Gasket Compatibility
EPDM, Silicone (VMQ), PTFE, Viton (FKM), NBR
Operating Pressure
Max. 10 – 16 bar (may vary depending on application)
Operating Temperature
-20°C to +180°C (may vary depending on gasket type)
Surface Quality
Internal/External Polished, Ra ≤ 0,8 µm (Optional Ra ≤ 0,4 µm Electropolish)
Chain Material
AISI 304 Stainless Steel (Optional AISI 316L)
Intended Use
Safe and leak-tight closing of hygienic connection points
Production Standards
DIN 11850, DIN EN 10357, EHEDG (depending on application)

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