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Sight Glass According to DIN28120

Home / Alfa Laval / Sight Glass According to DIN28120

Sight Glass According to DIN28120

Bolted sight glasses designed to DIN28120 standards for use in the chemical, pharmacuetical and hygienic processing industries.

 
The sight glass is engineered with a welding nozzle that is welded onto the tank wall, a grooved collar nut, a glass disc and two gaskets. The sight glass comes in sizes from DN50 (with a free view of 50 mm) to DN150 (with a free view of 150 mm). The sight glass can be fitted with an optional miniVision light fitting. It is suitable for food processing and sterile applications, the Alfa Laval metal-fused sight glass is mounted on clamp fittings in accordance with DIN 32676.
 

Concept

The bolted sight glass is used for visual control of processes inside vessels which typically are under high pressure and have temperatures. The sight glass is used in chemical, pharmaceutical and cosmetic industries as well as in dairies, breweries and other food industries.
 

Standard Design

The sight glass consists of a base flange, a cover flange, gaskets, a glass disc, nuts and studs. The sight glass is to be welded into or onto vessel walls and it corresponds in its construction and assembly to the dimensions and constructional guidelines of the DIN specification 28120. The respect of the DIN prescriptions for the flange thicknesses guarantees a distortion free location of the sight glass disc in case of correct welding. The pressure resistance of the glass disc is, of course, dependent on the care with which the bolts and nuts are tightened (always working on diametrically opposed pairs). The glass discs are made of borosilicate glass to DIN 7080 which means that the maximum operating temperature is 280°C536°F. All steel parts available with material certificate EN10204.

Sight Glass According to DIN28120
Product Documents
Sight Glass DIN 28120 Datasheet Download Now

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