Tubular sight glasses built from PVC, PP und PVDF Are used for visual checking and control of flows and filling in pipes. The sight glasses allow a reliable observation of function and performance in single devices and complete plants.Tubular sight glasses offer a barrier-free cross section with no significant dead space.Material:Flanges:PP, PVC, PVDFScrews:A4-70Glass:borosilicate glassSeal:Viton, EPDM,Shape:Tubular sight glassesNominal size:DN15-150Temperature:max. 100°COptions:Optional versions are possible.