CB Fabrication Products - Sight Glasses - CB Mills Store
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Sight Glasses

Chicago Boiler Company has been producing custom fabricated steel components for over 120 years. It was a natural progression for us to produce sight glasses in a variety of styles, sizes, and materials. Some companies produce only sub-components for tank manufacturers, but we decided a long time ago to produce our own sight glasses and other sub-components for our own projects.

We understand your needs and desires because we have the same requirements on our projects. We are now able to offer these same components to our other customers. Weld Pad Sight Glasses are offered in the following viewing diameters: 3", 4", 5", 6", 7" and 9". Series NW sight glasses are manufactured from ASME Section VIII acceptable metals and can be stamped if required. Each sight glass is thoroughly inspected.

Lower flanges constructed of carbon steel and stainless steel are standard. Virtually any machinable alloy can be specified to meet user requirements.

Sight glass lenses are tempered soda lime for operating temperatures up to 300°F(149°C) standard. Tempered borosilicate lens material is available for operating temperatures up to 500°F(260°C).

The standard sight glasses seal gasket is neoprene, Teflon®, VITON®, EPDM and silicon rubber seal gaskets are also available from stock. Virtually any elastomeric material may be specified to meet operating conditions.

Custom lower flanges are available upon request to accommodate needs.

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