A Subject to change without prior notice 11 March 2021 LINNEMANN pipe connections meet the strict requirements of DIN 11853 and DIN 11864 This allows their use under sterile conditions in pharmaceutical and biotechnology facilities. Depending on the flange type, LINNEMANN offers aseptic pipe screw connections according to DIN 11853-1 and DIN 11864-1, aseptic flange connections according to DIN 11853-2 and DIN 11864-2 as well as aseptic clamp connections according to DIN 11853-3 and DIN 11864-3. Matching hoses are also available according to DIN 11866 and weld fittings according to DIN 11865. Screwed pipe connections DIN 11864-1 + DIN 11853-1 The aseptic and the hygienic screwed pipe connections are compatible and differ only in the axial length. They are used with process facilities for liquid media with high purity requirements. Preferential fields of application are bio-engineering, cosmetics, chemical, pharmaceutical, food, and beverage industry. Sterile pipe screw connections are available either as aseptic pipe screw connections according to DIN 11864-1 or as hygiene pipe screw connections according to DIN 11853-1. They are used mainly with liquid media in process plants with high hygiene demands. Processing in bio and sterile technology as well as in the pharmaceutical industry and cosmetic industry and in the food industry and chemical industry demands aseptic processes or the hygienic conditioning of the mainly liquid media. Coaxial forced-centring of collared ferrule and threaded ferrule takes place in the assembly of the pipe screw connections DIN 11864-1 and DIN 11853-1. The slotted nut is pushed over the collared ferrule and screwed onto the threaded ferrule until the end faces are touching. In this way, the O-ring held independently in the collared ferrule is deformed such that an almost dead space-free flange connection is established. The pipe screw connections can be delivered with material surface Ra inside <0.8µm and Ra outside <1.6 µm, corresponding to H3. Also surfaces H4 and H5. The O-rings are delivered in materials EPDM, VMQ, FKM, EPDM and FKM USP Class VI as well as PTFE-FKM-seamless coated and FDA-conform. The standard DIN 11864-1 is part of the three-part standard series DIN 11864 and applies for aseptic pipe screw connections. The standard defines O-rings and pipe connection ferrules in lengths with normal version for butt welding to pipes in accordance with DIN 11866. The standard is intended for application to the chemical and pharmaceutical industry. Previous application also to the short versions of the flange lengths has since been replaced by definitions in the additional standard DIN 11853-1. Sterile technique
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