These sight glass fittings are designed for welding into or onto vessel walls, complete with a glass disc and seal gaskets on each side bolted between circular flanges. This is the low-pressure version of the DIN28120. For observation of interior of tanks, silos, mixers, dryers, separators, pipelines etc. Features Smaller outer diameter Smaller vessel cutout Lighter than standard sight glass fittings Easy to clean Low profile 15 PSI operating pressure Max. operating temperature 536°F (280°C ) Cover flanges can be drilled and tapped for luminaries These units can be combined with Lumiglas luminaires, such as the USL05-Ex, USL06-Ex, USL07-Ex or USL08-Ex , for use in hazardous areas. Under all normal working conditions, light options include USL01 , USL13 , USL15 , USL05 , USL06 , or USL07 . For an integral light/sight glass, combine the low pressure unit and LumiStar light. Specifications Nominal SizeViewing DiameterPressure ratingNo. of Bolts DN50 3.15 in. 15 PSI 4 DN80 3.94 in. 15 PSI 8 DN100 4.92 in. 15 PSI 8 DN125 5.91in. 15 PSI 8 DN150 6.89 in. 15 PSI 8 DN200 8.86 in. 15 PSI 8 Downloads Specifications (PDF Download)
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