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With flange connections according to DIN 1092-1
Vacuum flow sight glass PN 10 | PN 16 | PN 25 | PN 40
Non binding • Usually a response within 24 hours
DN 15 – 50 Rectangular flanges
DN 65 – 200 Round flanges
The Vacuum Sight Glass Type 550V is a sight glass fitting designed for vacuum applications for the visual monitoring of media in pipelines. It enables reliable monitoring of liquid and gaseous media directly in the process and is particularly suitable for applications where, in addition to visual inspection, a high degree of tightness in the vacuum range is required.
The fitting is manufactured based on DIN 11869 (formerly DIN 3237) and is designed for installation between DIN/EN flanges. The standard version is supplied with flange connections according to DIN EN 1092-1 PN 10/40. This allows the sight glass to be integrated safely and in a structurally compatible manner into existing piping and plant systems.
Unlike standard versions, Type 550V is specifically designed and tested for use under vacuum conditions. novaflon® 500 is used for sealing. This is a sealing material made of multidirectionally expanded PTFE with high chemical resistance, good mechanical stability and very good sealing properties.
The sealing system is designed for a temperature range of -60 °C to +200 °C. Suitability for vacuum applications down to 2 mbar absolute has been verified by an independent external test laboratory. This makes the Vacuum Sight Glass Type 550V particularly suitable for processes where operational reliability and tightness under vacuum are the main priorities.
The design and calculations have been pre-approved by TÜV SÜD Industrie Service GmbH. This ensures maximum safety for your process.
The Vacuum Sight Glass Type 550V is manufactured as standard from cast stainless steel 1.4408 and is therefore suitable for corrosion-prone industrial applications.
For applications with increased requirements regarding corrosion resistance and media compatibility, special versions are also available on request. This allows the fitting to be specifically adapted to demanding operating conditions.
As standard, thermally toughened borosilicate glass according to DIN 7080 (MAXOS®) is used as the glass material.
Typical areas of application include pipeline systems in the chemical industry, petrochemicals, industrial plant engineering and apparatus engineering. The fitting also provides a reliable solution for other process engineering applications in which flow and media condition need to be monitored under vacuum conditions.
In particular, for processes in which, in addition to chemical resistance, reliable sealing under vacuum (negative pressure) is required, the Vacuum Sight Glass Type 550V is a suitable version.
The Vacuum Sight Glass Type 550V can be adapted to different operating and process requirements and equipped with suitable accessories.
To improve visual process monitoring, the sight glass can optionally be equipped with an LED light. For use in potentially explosive areas, LED lights are also available with ATEX approval on request.
| DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 1251 | 1501 | 2001 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| D (PN10) | 95 | 105 | 115 | 140 | 150 | 165 | 185 | 200 | 220 | 250 | 285 | 340 |
| D (PN16) | 95 | 105 | 115 | 140 | 150 | 165 | 185 | 200 | 220 | 250 | 285 | 340 |
| D (PN25) | 95 | 105 | 115 | 140 | 150 | 165 | 185 | 200 | 235 | 270 | 300 | - |
| D (PN40) | 95 | 105 | 115 | 140 | 150 | 165 | 185 | 200 | 235 | 270 | 300 | - |
| BL | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 |
| D1 | 32 | 32 | 48 | 48 | 65 | 80 | 80 | 100 | 125 | 150 | 175 | 175 |
| 1) According to DIN 11869 | ||||||||||||
The Type 550V vacuum sight glass is designed for the visual monitoring of liquid and gaseous media in pipework under vacuum conditions. It has a temperature range of –60°C to 200°C. It is particularly suitable for process engineering applications where, in addition to visual inspection, a high level of leak-tightness is required under vacuum conditions.
The Type 550V model is suitable for vacuum applications down to 2 mbar absolute (-0.998 bar gauge). This means the sight glass can also be used in processes where standard models reach their limits under negative pressure.
The key difference lies in the sealing system of the sight glass and the component testing carried out by an external testing laboratory – from –60°C to 200°C.
The Type 550V uses novaflon® 500, a multidirectionally expanded PTFE. This sealing material is chemically resistant, mechanically robust and designed for demanding sealing applications in vacuum environments.
The Type 550V is available in nominal diameters ranging from DN 15 to DN 200. The design is intended for PN 10 and PN 16, and can therefore be integrated into a variety of piping and system configurations.
