A hygienic eccentric reducer is a specialised fitting with an offset centerline, designed for use in horizontal hygienic pipelines to transition between different pipe diameters while maintaining continuous fluid flow and preventing the accumulation of air pockets or stagnant product. This design is essential for preventing contamination in industries like food, beverage, and pharmaceutical processing.
Key Properties
The flat side of an eccentric reducer is typically oriented on the top (for liquid systems) to avoid air buildup, or on the bottom (for gas systems) to allow for condensate drainage.
Material: Primarily made from AISI 304L or AISI 316L stainless steel, with 316L offering superior corrosion resistance.
Design: Features one straight side, with one edge running parallel to the connecting pipe, which creates an offset centerline.
Surface Finish: The internal surface is polished to a specific roughness average (Ra 0.51 µm or lower, sometimes as low as Ra 0.4 µm for pharmaceutical grade) to minimize microbial adhesion and facilitate effective Clean-In-Place (CIP) procedures.
Standards: Manufactured in compliance with recognized sanitary standards like BS 4825 Part 2, EN 10357, ISO 2037, and ASME BPE.
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