Sight glasses are indispensable components for visual process monitoring in piping systems. They enable the direct control of flow, level and media quality – a decisive factor for operational safety and quality assurance. Our selection includes flow sight glasses from NORIS and Vaposkop® flow indicators from GESTRA, which are suitable for a wide range of applications in industry, plant engineering and SKID systems. All products are manufactured in accordance with international standards and offer maximum reliability and durability.
| Property | 880 | 881 | VK14 | VK16 |
| Nominal pressure | PN 16 – PN 40 | PN 16 – PN 40 | PN 16 | PN 40 |
| Nominal size | DN 15 – DN 250 | G ¼”- G 2″ | DN 15 – DN 50 | DN 15 – DN 50 |
| temperature | up to 280°C | up to 280°C | up to 280°C (optional 300°C) | up to 300°C |
| material | Cast iron / cast steel / stainless steel | Cast iron / cast steel / stainless steel | Cast iron / cast steel | Cast steel / stainless steel |
| Gasket | Graphite | Graphite | Graphite/CrNi | Graphite/CrNi |
| Special feature | Drip nose for very small flow rates | Compact design for threaded connection | Flow indicator upstream of steam traps | For high-pressure steam and aggressive media |
For all installation positions and media – water, steam, gas, aggressive liquids.
EN 1092, DIN 7080, Pressure Equipment Directive 2014/68/EU.
Special materials, heating jacket, sight glasses.
Ready-to-install assemblies including documentation.
Early detection of condensate build-up, steam loss or media contamination.
Sight glasses are indispensable components for process monitoring in modular SKID systems. They enable the direct visual inspection of flow, fill level and media quality in pipes and containers – a decisive factor for operational safety and quality assurance.
Visual inspection of liquids and gases.
Upstream of steam traps to detect steam loss.
Control of aggressive media (with stainless steel version).
Hygienic visual inspection.
Integration into compact systems for visual inspection.
With heating jacket for viscous or crystallizing media.
DIN 3237, EN 1092, DIN 7080, Pressure Equipment Directive 2014/68/EU.
Yes, stainless steel versions are available.
Yes, we supply ready-to-install solutions including heating jacket and accessories.
Up to 280°C (optionally 300°C with mica disks).
Yes, all appliances are designed to be low-maintenance and robust.
