Sight Glasses   We carry a range of in-line and weld-in Sight Glasses for visual product inspection.   All come with Butt-Weld end connections and can be adapted to suit your requirements. These are: Nocado Fig. 778: 316L Stainless Steel 3-Pce bolt-together body, Borosilicate Glass with EPDM seals. A stainless steel glass protector is also available. For welding in-line on pipework. Sizes 1" up to 4". Nocado Fig. 787: 316L Stainless Steel Body, 304 Stainless Steel DIN Nut, Borosilicate Glass with Nitrile seals. For branch welding into pipework or for welding onto a tank or vessel. Sizes NW25 up to NW150.   Home | Butterfly | N/R | Sight | Ball | Strainers | Drain | Others