Tubular sight glasses Type 620 with Flange connectionsUse:Sight glass – Tubular type with flanges on both sides, to use in either horizontal or vertical pipe lines for optical control of liquids and gases.Flanges matching DIN 2632 / DIN 2633 (PN 10/16) up to DN 150, DIN 2632 (PN 10) above.Material:Flanges:1.4571 or P265GH / 1.0425Screws:A4-70Glass:borosilicate glassSeal:Viton, PTFE, EPDM or negotiable.Optional:Plexiglas-impact protective shellShape:Tubular sight glasses Type 620 with flanges on both sides to fit flanges according to DIN 2633 and EN 1092 for installation in pipes.Nominal size:DN15-300Nominal pressure:please see the datasheetTemperature:max. 200°COptions:Optional versions are possible.