High-pressure flow sight glass type 520A Class 300/1500 lbs
Intermediate flange design for flanges according to ASME B 16.5
High-pressure flow sight glass Class 300 | 400 | 600 | 900 | 1500 lbs
- 1 ½“
- 2 ½“
- 3“
- 4“
- 5“
- 6“
- 8“
- 300 lbs
- 400 lbs
- 600 lbs
- 900 lbs
- 1500 lbs
- 80°C
- 130°C
- 150°C
- 175°C
- 180°C
- 200°C
- 280°C
- 300°C
- Double glazing
Quick overview
1" - 8"
Cross-section
drawing
| NPS | 1“ | 1 1/2“ | 2“ | 2 1/2“ | 3“ | 4“ | 5“ | 6“ | 8“ | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| (BL)² Length of the body | DIN EN 558-1 FTF 2 | ||||||||||
| Flange dimensions | Connection flanges according to DIN EN 1759-1 matching counter flanges according to ASME B 16.5 | ||||||||||
| (D1)² free view | dependent on the pressure level | ||||||||||
| 2) All dimensions will be executed in accordance with the standard, if constructively possible. Otherwise, the information from the order confirmation and the customer drawing apply | |||||||||||
Product information
The high-pressure flow sight glass type 520A has been specially developed for industrial high-pressure applications and stands for maximum operational safety and durability even under extreme conditions. Its particularly robust body, made of corrosion-resistant stainless steel alloys such as 1.4571, guarantees reliable functionality even under permanently high pressure and temperature loads. On request, versions made of particularly resistant materials such as nickel-based alloys or Hastelloy® are also available, allowing the sight glass to be reliably used in highly aggressive or thermally highly stressed process environments.
The type 520A is characterized by two oppositely arranged viewing windows made of high-quality, thermally tempered borosilicate glass. These glasses are oriented to the requirements of DIN 7080 and enable clear, safe process observation from two sides or targeted illumination of the medium. The dual-sided visibility allows for real-time visual control of the process – a significant safety and efficiency advantage in modern process engineering.
The flange connections comply with DIN EN 1759-1 and ensure compliant, secure integration into existing piping systems. The flange connections according to DIN EN 1759-1 fit on counter flanges according to ASME B 16.5. The design, strength calculation, and construction are in accordance with the PED 2014/68/EU and the AD 2000 regulations. Depending on requirements, the flow sight glass can be manufactured in pressure ratings up to Class 1500 lbs, making it ideal for high-pressure processes in the chemical, pharmaceutical, food, or energy industries.
Thanks to its thoughtful design, high-quality material selection, and flexible implementation options, the high-pressure sight glass type 520A offers a durable, safe, and individually customizable solution for the most demanding industrial applications.
