DIN 11864 and DIN 11853 are high-purity unions designed to eliminate "dead spaces" where bacteria grow. While DIN 11864 is the Aseptic standard for pharma/biotech, DIN 11853 is the Hygienic version for food/chem.
Both use a metal-to-metal stop that precisely compresses the O-ring, creating a flush internal surface perfect for CIP/SIP sterilization. They come in three types:
Form A: Screwed
Form B: Flange
Form C: Clamp
Attribute,DIN 11864 (Aseptic),DIN 11853 (Hygienic)
Primary Focus,Pharmaceutical & Biotech,"Food, Dairy, & Chemical"
Design Type,Zero-dead-space (Aseptic),Reduced-dead-space (Hygienic)
Series Versions,"1 (Screwed), 2 (Flange), 3 (Clamp)","1 (Screwed), 2 (Flange), 3 (Clamp)"
Material (Standard),AISI 316L (1.4404 / 1.4435),AISI 316L (1.4404)
Sealing Element,O-Ring (Precision fit),O-Ring (Precision fit)
Seal Compression,Metal-to-metal positive stop,Metal-to-metal positive stop
Pipe Dimensions,"DIN 11866 Series A, B (ISO), C (ASME)",DIN 11850 / DIN 11866
Surface Finish (Int),Ra < 0.4 µm to 0.8 µm,Ra < 0.8 µm
Pressure Rating,16 bar to 40 bar (Size dependent),16 bar to 40 bar (Size dependent)
Sterilization,Full SIP (Steam-In-Place),CIP (Clean-In-Place)
Seal Centering,Self-centering design,Self-centering design
Interchangeability,Not compatible with DIN 11851,Short design; unique dimensions
Compliance,"FDA, USP Class VI, EHEDG","FDA, EHEDG"
Mounting Length,Longer (Aseptic requirements),Shorter (Compact installation)
Thread Type,Metric Fine / DIN 405 (Form A),Metric Fine / DIN 405 (Form A)
Contact: Jorge Yang
Phone: +86-13588258503
E-mail: sales@fluvalve.com
Whatsapp:+86-13588258503
Add: Room 331, South Building,Building 1, No.3 Jinpeng Street, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province
