Din 11864 1 2 3 Form A Aseptic Male Hose Coupling

A din11864 union standardizes hygienic stainless steel pipe joints engineered to eliminate fluid entrapment pockets and bacterial harborage in sterile process pipelines. The specification defines tight axial tolerances that guarantee smooth inner bore alignment and regulated elastomeric compression, ensuring aseptic fluid purity across demanding processing regimes.

Screwed Male Hose Shank Retention and Sealing

Fluid transfer lines assembled with din 11864 1 connections incorporate threaded male ferrules paired with slotted round nuts. Metallic stops arrest axial travel upon complete tightening, preventing elastomer intrusion into the product flow and maintaining laminar fluid motion.

Integrated hose shanks feature smooth radial ribs designed for secure sanitary hose crimping. Machined stops prevent localized gasket over-compression when operators torque retaining nuts during mobile transfer skid hookups.

Concentric Alignment Under Thermal Excursions

For rigid pipeline manifolds, din 11864 2 form a defines aseptic flanged unions featuring recessed circular O-ring grooves. Precision interlocking spigots sustain concentric alignment, resisting vibration from high-velocity centrifugal pumps during hot water rinses.

Recessed elastomeric cavities protect sealing rings against steam erosive forces. Metallic face contact preserves joint hermetic integrity throughout thermal sterilization cycles without requiring scheduled nut re-tightening.

Functional Delineation Across Hygienic Connection Types

Rapid Line Transition Mechanisms

Where processing operations demand swift line reconfiguration, din 11864 3 establishes clamp connections with male and female liners housed inside two-piece clamps. Uniform circumferential clamping force creates flush conduit transitions without gasket extrusion.

Hinged clamp collars enable rapid decoupling during routine line sanitation. Recessed elastomer seating prevents gasket misalignment errors common with conventional sanitary tri-clamp fittings.

Surface Micro-Finishes Resisting Biofilm Colonization

Internal contact diameters finished below Ra 0.8 micrometers eliminate microscopic crevices where organic deposits adhere. Uniform bore transitions preserve laminar flow, allowing cleaning solutions to achieve complete fluid displacement during clean-in-place cycles.

Regulated thermal expansion prevents micro-vacuum formation during rapid cooling intervals, preserving sterile fluid containment against ambient ingress.

Technical Data