High-pressure sight glass type 520 PN 63/400
Intermediate flange design for flanges acc. to DIN EN 1092-1
High-pressure flow sight glass PN 63 | PN 100 | PN 160 | PN 250 | PN 320 | PN 400
- 25
- 40
- 50
- 65
- 80
- 100
- 125
- 150
- 200
- 63
- 100
- 160
- 250
- 320
- 400
- 80°C
- 130°C
- 150°C
- 175°C
- 180°C
- 200°C
- 280°C
- 300°C
- Double glazing
Cross-section
drawing
| PN | DN | BL¹ | D1¹ | AL1¹ | AL2¹ |
|---|---|---|---|---|---|
| 63 | 25 | 230 | 45 | 175 | 140 |
| 40 | 260 | 45 | 185 | 170 | |
| 50 | 300 | 65 | 211 | 185 | |
| 65 | 340 | 8 | 239 | 220 | |
| 80 | 380 | 80 | 264 | 250 | |
| 100 | 430 | 125 | 324 | 300 | |
| 125 | 500 | 125 | 354 | 350 | |
| 150 | 550 | 160 | 435 | 400 | |
| 200 | 650 | 160 | 505 | 480 | |
| 100 | 25 | 230 | 45 | 175 | 140 |
| 40 | 260 | 45 | 190 | 170 | |
| 50 | 300 | 65 | 211 | 195 | |
| 65 | 340 | 65 | 239 | 220 | |
| 80 | 380 | 80 | 274 | 250 | |
| 100 | 430 | 125 | 354 | 290 | |
| 125 | 500 | 125 | 397 | 350 | |
| 160 | 25 | 230 | 45 | 175 | 140 |
| 40 | 260 | 45 | 195 | 170 | |
| 50 | 300 | 65 | 241 | 195 | |
| 65 | 340 | 65 | 296 | 220 | |
| 80 | 380 | 80 | 294 | 250 | |
| 250 | 25 | 230 | 48 | 196 | 150 |
| 40 | 290 | 48 | 221 | 185 | |
| 50 | 300 | 65 | 255 | 200 | |
| 65 | 340 | 65 | 279 | 230 | |
| 80 | 380 | 80 | 334 | 225 | |
| 320 | 25 | 230 | 20 | 186 | 160 |
| 40 | 260 | 20 | 201 | 195 | |
| 50 | 300 | 30 | 230 | 210 | |
| 65 | 340 | 30 | 254 | 225 | |
| 80 | 380 | 48 | 289 | 275 | |
| 400 | 25 | 280 | 20 | 210 | 180 |
| 40 | 320 | 20 | 220 | 220 | |
| 50 | 370 | 30 | 240 | 235 | |
| 1) All dimensions are executed according to standard, as far as constructively possible. Otherwise, the specifications in the order confirmation and customer drawing apply. | |||||
Product information
The high-pressure flow sight glass type 520 was 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 operation even under permanently high pressure and temperature loads. Upon request, versions with 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 stressed process environments.
Type 520 is characterized by two opposing sight windows made of high-quality, thermally pre-stressed borosilicate glass. These glasses are designed according 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 1092-1 form B2 and ensure a standardized, safe integration into existing piping systems. Depending on the requirement, the flow sight glass can be manufactured for pressure levels up to PN 400, 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 customization options, the high-pressure sight glass type 520 offers a durable, safe, and individually adaptable solution for the most demanding industrial applications.
