Sight Glass Manufacturers and Companies

IQS Directory provides a detailed list of sight glass manufacturers and suppliers. Find sight glass companies that can design, engineer, and manufacture sight glasses to your specifications. Peruse our website to review and discover top sight glass manufacturers with roll over ads and complete product descriptions. Connect with the sight glass companies through our hassle-free and efficient request for quote form. You are provided company profiles, website links, locations, phone numbers, product videos, and product information. Read reviews and stay informed with product new articles. Whether you are looking for manufacturers of industrial sight glass, plant sight glass, and sight glass frames of every type, IQS is the premier source for you.

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  • What is Pirex Sight Glass?

    Pirex sight glass is a special brand of sight glass that protects the wearer or user from dangerous chemicals, pressures, and high temperatures. Sight glass is specifically designed to provide additional protection beyond basic safety glass and safety glasses, in extreme circumstances to add additional protection for the eyes. Pirex sight glass is made from borosilicate glass, which has excellent mechanical, chemical and thermal stability properties. These properties of glass make them much safer for use around chemicals and high temperatures that could damage other forms of glass. Most Pirex...

  • Reassurance: Sight Glass

    Sight glass is simply a tool of reassurance. The word reassurance applies to this product because it provides information and comfort in a situation where you would otherwise be blind. If this confuses you, I can explain what sight glass truly is. If you have ever wandered downstairs or wherever your pipelines operate from, and taken a few seconds to observe your pipes, you would have noticed that pipes are more complex than you would have originally thought. Oftentimes, there is a small glass window in the middle of the...

Industry Information

Sight Glass

Sight glass is used in industrial plants and machines in order to visually observe and monitor liquid and material levels, colors, flows or direction. It can be installed as the windows of a piping system, an external vacuum tube, or as a component with a frame screwed between two metal pipes. Tanks, boilers, reactors or vessels may contain components of sight glass in the form of liquid level gauges or inline sight points. Further uses include media vessels in chemical plants and in other industrial settings such as breweries, bio gas plants, pharmaceutical, food processing and beverage.

Also referred to as sight windows or sight ports, sight glass components are important for a number of reasons. For consumer and beverage industries it is necessary to ensure levels remain high. In some machines, without a specific amount of necessary liquids, the engines could seize and cause great damage; therefore it is imperative the levels are monitored to remain in a safe phase. Sight glass can come in different forms; however the most common type of sight glass is composed of a tempered glass disc between two metal frames which have been secured together allowing the operator of the equipment to determine the level of liquid contained within.

The glass used must be transparent in order for the level of liquid to be observed and therefore color additives or coatings are not typically used with sight glass. However, to ease the reading of the level, a backboard may be a component of the sight glass mechanism. Sight glass is typically manufactured as safety glass in order to prevent any pressure or tension resulting in breakage and potential physical damage to personnel working with the machinery. However, glass which has been tempered or mechanically stressed prior to installation is less likely to break and therefore it is used for sight glass to reduce the risk of explosions. The glass used for sight glass fabrication is made using soda lime or borosilicate glass. Soda lime glass tends to be more cost-effective and is a good quality material. However, when tensile strength and a lower coefficient of expansion are required in a piece of sight glass, more expensive borosilicate glass is used. It is unlikely that borosilicate glass will crack or break even when exposed to temperature changes and pressure. Sight glass can be further strengthened through the process of annealing and ion exchange chemical strengthening.

Sight Glass
Sight Glass - Pegasus Glass

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