A sanitary sight glass consists of a frame made of stainless steel and PYREX glass. The condition of the flow of the medium and the liquid can be seen through the sight glasses.
When the sanitary sight glass is installed within a pipeline/vessel, it serves as a window where an operator can observe the processes that are going on in a boiler, water tank, reactors or pipes. This enables control of whatever is taking place in the containers for proper sanitation.
The sanitary sight glasses come in different styles. The most common styles include the following:
— A tubular sight glass. Here, the sight glass works as a tube that one can see through. Therefore, the person operating a tank or a boiler can know the level of fluid contained in the container.
— Sight flow. The style refers to a linear sight glass that allows one to see the movement of a liquid within the pipelines.
— A circular sight glass. The sanitary sight glass takes a circular shape, and the operator can see through it to observe the fluid within a vessel.
The styles refer to the shape of the sanitary sight glasses as we have already established above.
As we might have noted in other sections of this article, the sight glass is made by use of the following materials;
The reason for the use of stainless-steel is to prevent corrosion and rusting. Remember that the sanitary glass comes into contact with air and moisture, and this could result in rusting. Furthermore, stainless still is a durable metal.
Pyrex glass is durable glass. It resists attacks by all acids apart from hydrofluoric and hot phosphoric acid. Since it comes into contact with many fluids and among them acids, it is the best to use in sanitary sight glasses.
The gasket is used to seal all the junctions within the sight glass. Mostly used materials in gasket include NBR, Silicone. EPDM and Viton. All of them comply with the FDA1787.2600.
Sanitary sight glass must have some specific technical specifications for it to deliver the best service in any industry. The list below summarizes the best such specifications that you should consider next time you want to buy a sanitary sight glass;
– Size: 1″- 4″ (DN25 to DN100)
– End connection: Butt-weld, sanitary clamp, flange, and thread.
– Full port design
– 360° viewing
– Both vertical and horizontal positions can be installed
– Working temperature: 14°F to 248°F (-10°C to 120°C), VMQ (Silicone).
– Max Operating pressure 145psig/10bar.
– Standard: IDF, BS, RJT, SMS, DIN
– Surface treatment: <Ra 32µin (0.8µm)
A sanitary sight glass is an essential tool that every industry must have. This is in a bid to observe maximum hygienic and sanitation requirements for all industries.
The next time you will be planning to buy a sight glass for sanitary purposes, think about all the types highlighted above and choose the one that works best for you. Avoid blind and impulse buying and keep hygiene and sanitation at the highest levels.
As a manufacturer of stainless steel sanitary sight glasses, SIMPLE VALVES aims to arm its potential customers with information that would help them in making an informed decision.
Our sales representatives are ready to help, please feel free to email us at email@example.com or submit your request directly in below form.