DIN32676
hygienic clamp connections
DIN 32676 defines clamp connections specifically designed for the food processing, chemical, and pharmaceutical industries — sectors where hygiene, reliability, and fast maintenance are critical. These hygienic fittings feature a quick-release design, allowing easy disassembly for efficient cleaning and reduced process downtime.
Manufactured from high-grade stainless steel (1.4435 / 316L), DIN 32676 connections are available in various hygienic versions and surface finishes, including electropolished Ra < 0.25 µm options for ultra-clean environments. Their crevice-free, easy-to-clean geometry ensures compliance with strict industry standards, making them ideal for sterile applications in CIP/SIP systems and cleanroom production lines.
Clamp Ferrules for Hygienic Applications
Clamp ferrules according to DIN 32676 are high-precision connectors developed for hygienic use in the food, pharmaceutical, and chemical industries. Their crevice-free design enables secure, contamination-free, and easy-to-clean process connections. Depending on the version — KK, NEUMO (KN), or KL — ferrule lengths and wall thicknesses vary to meet application-specific requirements.
Manufactured from premium stainless steel (1.4435 for NEUMO type, 1.4404 for KK/KL types), the ferrules comply with current DIN 32676 standards. Available surface qualities include H3, H4 (mechanically polished), and HE3, HE4 (electropolished) finishes. All ends are designed for orbital welding and clamp connections according to DIN 32676 line A (DIN), line B (ISO), or line C (ASME-BPE). Customized geometries, special alloys, and alternative surface finishes are available on request to match your process needs.
Material and Design
This hygienic connection system is manufactured from premium stainless steel (1.4435 / 316L), offering excellent durability and corrosion resistance in demanding process environments. The product-contact area is precision-turned to a surface roughness of Ra < 0.8 µm, ensuring optimal cleanability and hygienic safety.
Thanks to its elastomer-free, metallic sealing design, the system achieves outstanding pressure resistance:
- PN16 for sizes up to DN50 (2")
- PN10 for DN65 (2½") to DN100 (4")
- Special high-pressure versions up to PN100 for DN40 are available upon request.
It is engineered for reliable operation within a broad temperature range from -10 °C to +200 °C. A delta ferrite content of ≤ 1% in the base material ensures structural integrity and corrosion resistance, particularly in weld areas.
