Four way sight glass Type 595 with Flanged ConnectionsUse:Visual Checking of Filling and Flows in Piping. Sight Glasses allow for reliable Observation of Function and Performance in single devices or complete plants.Material:Body made of 1.4571, 1.4404 or carbon steelShape:Four way sight glassNominal size:DN 15-150 (larger sizes available as special design)Nominal pressure:PN16, PN40 (higher operating pressures on request)Temperature:280 ° C with borosilicate glass to DIN 7080150 ° C with soda lime glass DIN 8902up to 500 ° with quartz