High-pressure solutions from ACI: Vessel sight glass type 390 for extreme requirements
Summer heat has arrived – and at ACI Industriearmaturen GmbH, things have been heating up too! But this time, the focus was not on temperatures but on pressure. With our vessel sight glass type 390, we once again proved that even extreme operating conditions such as 250 bar(g) at +400 °C are not a problem for us.
Challenge: Aligning Pressure and Temperature
For a plant builder testing a newly designed system, we supplied a flow sight glass of type 390 in the nominal size DN 25. The special design was equipped with a welding end according to DIN EN 1092-1, which required the highest precision and load-bearing capacity.
Our type 390 is designed for nominal pressures up to PN 250 and nominal sizes up to DN 65. The construction allows for maintaining the maximum possible working pressure even at full working temperature. Thus, this solution represents the ideal choice for applications where both high pressures and high temperatures occur.
Material selection:
Quality and safety
The quality starts with the materials. For the sight glass flanges, we used corrosion-resistant stainless steel 1.4571 (F316Ti), which remains reliable even under extreme conditions. Of course, we only use certified materials that meet the requirements according to AD2000.
We also rely solely on TÜV tested screws listed in the VdTÜV leaflet 1253-4. These components ensure a safe and durable connection even under the high loads experienced in this project.
Special glass and sealing system:
Key to maximum performance
A crucial factor in the implementation was the choice of the sight glass plate. Here, we opted for borosilicate glass untempered, known for its outstanding temperature and pressure resistance. This material withstands continuous temperatures of up to +450 °C and is ideal for applications under extreme conditions.
In addition to the glass plate, the sealing system plays a central role. We relied on a proven system that is already successfully used in our high-pressure fittings. Additionally, we equipped the media side with mica protection discs, which minimize wear and extend the lifespan of the sight glass.
Customized High-Pressure Solution
After intensive technical coordination and precise manufacturing, the container sight glass was successfully delivered to our customer. This customized solution proves once again that ACI Industriearmaturen is a reliable partner when it comes to high-pressure and high-temperature applications.
Do not hesitate to contact us if you are looking for a strong partner for your demanding projects. With our experience and expertise, we will make your project a success under high pressure as well.
Technical details of type 390
- Nominal size: DN 25
- Nominal pressure: PN 250
- Working pressure: 250 bar(g)
- Working temperature: +400 °C
- Material: Stainless steel 1.4571 (F316Ti)
- Glass: Borosilicate glass untempered
- Sealing system: High-performance gasket with mica protection
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