2 4 Hygienic Sanitary Sight Glass

A sanitary sight glass integrated with a manual wiper clears interior lens condensation, sticky residue, and process foam without breaking container vacuum or pipeline pressure. Engineered for DIN 11851 unions and sanitary clamps, the assembly uses an inert fluoropolymer blade operated by an external handle to restore optical clarity during boiling, evaporation, or fermentation runs. Forged AISI 316L stainless steel construction resists aggressive CIP chemicals, protecting batch purity across pharmaceutical and food vessels.

Rotary Blade Action And Pressure Sealing

Splash accumulation during active agitation obscures inspection ports within minutes. Outfitting a hygienic sight glass with an internal wiper blade enables direct 360-degree mechanical sweeping across the lens face. Contact surfaces electropolished below Ra 0.5 µm eliminate crevices and prevent product residue from adhering to the shaft penetration.

Dual encapsulated fluorosilicone O-rings preserve pressure containment up to 10 bar while sustaining full vacuum down to -0.95 bar. Operators can manually clear baked-on crusts and splashing froth without stopping mixing impellers, venting vessel headspace, or interrupting active production runs.

Wiper Contact Blade Material Capabilities

Two-Inch Port Flow Profile And Service Access

Selecting the correct port diameter prevents dead legs and flow stagnation at vessel nozzles. A 2 sanitary sight glass matches two-inch process lines on pilot fermenters, filtration skids, and compact distillation columns. Heavy-duty slotted union collars allow rapid field disassembly whenever maintenance teams need to replace worn wiper seals or inspect perimeter gaskets.

Its compact external profile fits comfortably into dense piping clusters without obstructing nearby valve actuators or instrumentation. The standardized union bezel also allows easy attachment of external LED sight glass luminaires for low-light tank inspections.

Four-Inch Viewing Apertures For Industrial Bioreactors

Bulk storage silos, mash tuns, and commercial brew kettles require wider sightlines to observe fluid surfaces and foaming behavior. Installing a 4 sanitary sight glass provides an expanded optical cone into deep tank interiors, eliminating dark zones across wide liquid levels.

The extended wiper arm sweeps the entire borosilicate glass disc in a single rotation, removing thick foam blankets and dried splash marks. Precision CNC-machined union ferrules deliver uniform circumferential gasket compression, shielding the tempered lens from localized mechanical stress and absorbing thermal shocks up to 120°C during cold CIP flushes.

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