Douglass

Weldable Tank Sight Glasses

Weldable tank sight glasses allow for a total view of the inside of a process. Depending on the fluid temperature and pressure to work with, a recommendation can be made on the best material of manufacture, types of crystals and types of gaskets.

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Weldable tank sight glasses allow for a total view of the inside of a process. Depending on the fluid temperature and pressure to work with, a recommendation can be made on the best material of manufacture, types of crystals and types of gaskets.

Body Manufacturing Materials Carbon steel with anticorrosive coating, stainless steel (304 or 316)
Manufacturing Materials Buna, Neoprene, Teflon, Sanitary Rubber
Seals Sanitary, EPDM, Viton
Glass Manufacturing Material Quartz, Tempered glass, Polycarbonate
Type of Connection Welding
Types of internal vision Free passage
Working pressure From 0 to 300 PSI
Working pressure -45°C – 1450°C
ID Visible Diameter A Total Diameter B Total thickness C
3″ 3” (76.20 mm) 5” (127.00 mm) 3.5” (88.90 mm)
4″ 4” (101.6 mm) 6” (152.40 mm) 3.5” (88.90 mm)
5″ 5” (127.00 mm) 7.5” (190.50 mm) 4” (101.60 mm)
6″ 6” (152.40 mm) 9” (228.60 mm) 4.5” (114.30 mm)
7″ 7” (177.80 mm) 10” (254.00 mm) 5” (127.00 mm)
8″ 8” (203.20 mm) 11” (279.40 mm) 5” (127.00 mm)
9″ 9” (228.60 mm) 12” (304.80 mm) 6” (152.40 mm)

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