Tank Sight Glasses for Monitoring Processes and Fill Levels
Container sight glasses are all types of sight glasses that are bolted, mounted, or welded to a tank or vessel. They allow visual monitoring of fill levels and internal processes.
Container sight glasses come in many variants. We primarily distinguish between models designed for level indication and those used for process observation inside the vessel.
For pressureless applications up to max. 0.49 barg
Light execution for operating pressures up to 2.5 barg
Light design for vacuum
Execution according to DIN 28120 for operating pressures up to 16 barg
Execution according to DIN 28121 for working pressure up to 25 barg
Execution similar to DIN 28121 for working pressure up to 20 barg
High pressure tankl sight glass PN 40 | PN 63 | PN 100 | PN 160
High pressure vessel sight glass class 150 | 300 | 400 | 600 | 900 | 1500 lbs
High-Temperature container sight glass for working pressures up to 25 barg
Manhole sight glass for working pressures up to 16 barg
Screwed sight glass Type 327 for working pressures up to 10 barg
Clamp connection DIN 32676 for working pressures up to 16 barg
Level indicator for working pressures up to 40 barg
Level indicator for working pressures up to 3 barg
Level indicator for working pressures up to 3 barg
Level indicator for working pressures up to 6 barg
Level indicator for working pressures up to 25 barg
Level indicator for working pressures up to 16 barg
Tank sight glass PN 16 | PN 40 | PN 63 | PN 100 | PN 160 | PN 250 | PN 320
Tank sight glass for vacuum application
Tank sight glass PN 16 | PN 25 | PN 40
Tank sight glass PN 16 | PN 40 | PN 63 | PN 100 | PN 160
Tank sight glass PN 16 | PN 40 | PN 63 | PN 100 | PN 160
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Types of Container Sight Glasses
Level indicators are classic level gauges for containers. This type of container sight glass serves for quick, easy, and safe reading of fill levels in containers, tanks, and silos such as water tanks, oil tanks, steam boilers, grain silos, granulate silos, and many more. All have either a sight glass made of Borosilicate glass, Soda-lime glass, or PMMA sight glass. For particularly high temperatures, there are also variants with Quartz glass or Sapphire glass. The technical glasses and gaskets are selected depending on the medium and temperature.
Circular sight glass fittings according to DIN 28120 (ACI Type 320) are particularly suitable for observing processes in pressure vessels. According to DIN 28120, these have a free view of 225 mm and a maximum working pressure of 16 bar at 280°C. Container sight glasses Type 320 are either welded onto or into the container wall. However, since there are many different applications that do not have such high requirements for pressure or temperature, ACI also offers more economical variants based on DIN 28120. For example, we have Type 317 for pressureless observation or Type 318 for low pressures up to a maximum of 2.5 bar working pressure.
There are also circular sight glass fittings according to DIN 28121 (ACI Type 321) with a sealing in the force shunt. This sight glass offers the advantage of being directly screwed onto an existing flange according to EN 1092-1 Type 11. The container sight glass Type 321 according to DIN 28121 is available as PN 10 or PN 25 variant and can be operated up to a maximum of 200°C. However, since there are many applications with higher pressures, we have developed sight glasses similar to DIN or in line with the standard for higher pressures (Type 322) or higher temperatures (Type 323). If both are required, high pressures and temperatures, our Type 326 comes into consideration.
Furthermore, there are also fittings for welding according to DIN 11851 primarily used in the food industry.
We supply all fittings in sizes according to the standard. However, as a manufacturer, we also offer a variety of differing sizes in our product range. Accessories for sight glasses, such as lighting in various designs or cleaning mechanisms, are also part of our product range.
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