Sight Flow Indicators - 880-D | Noris

NORIS Bauform 880-D – Dual-Sided Flow Indicator with Double Glass

The NORIS 880-D is a straight-through flow indicator featuring double glass windows on each observation side. This construction is utilized when enhanced protection of the glass from external mechanical impact or installation environment is required, without altering the fundamental function of visual flow monitoring. The 880-D sheet refers to dimensions, pressures, and materials in the NORIS Bauform 880 series.

Technical Specifications

• Type: Dual-sided straight-through flow indicator
• Windows: Double observation glass
• Reference Series: Bauform 880
• Connection / Dimensions / Materials: According to available 880 versions
• Available: All sizes, pressures, and materials of the 880-D/880 series
• Option: Electric heating element between the two glass panes to limit moisture/fogging

Operating Conditions for Series 880

The 880 series pertains to flow indicators per DIN 3237 with flanges DIN PN16, PN25, or PN40. Used for visual inspection of liquids and gases in horizontal or vertical pipelines, with temperature versions of 150 °C or 280 °C. Main body materials include GG25 / EN-GJL-250, GS-C25 / 1.0619 / GP240GH, and stainless steel 1.4408.

Application Selection

The 880-D is selected when flow visibility must be combined with better protection of the glass from external factors. Typical applications:

• Process and cooling water
• Condensate
• Industrial network gases
• Compatible chemical liquids
• Lines with ambient moisture or potential condensation on glass

Difference from NORIS 880

The 880 is the basic dual-sided version. The 880-D adds double glass per side. For applications requiring certified double glass safety arrangements, the technical sheet refers to the 885-D series.

FAQ

Does it accept an actuator?
No. It is a passive flow indicator. The electrical option pertains to heating the glass panes, not automation.

What should be specified in the order?
DN, PN, body material, glass type, temperature, fluid, sealing, and need for heating element.