Sight Flow Indicators - 880-I | Noris

NORIS Bauform 880-I – Flow Indicator with Internal Glass Washing

The NORIS 880-I is a specialized dual-sided flow indicator from the 880 series, featuring an integrated spray head for cleaning the internal surface of glass windows. It is utilized when visibility may be compromised by deposits, condensation, colored fluids, or process contaminants.

Construction Details

• Type: sight flow indicator with spray washer
• Body Materials: GS-C25 / 1.0619 or stainless steel WN 1.4408
• Standard Version: one spray head for one observation side
• Spray Head Material: stainless steel
• Washing Connection: G 1/4" male threaded pipe
• Special Version: two spray heads for cleaning both glass panes
• Alternative Washing Connections: e.g., V-flanges

Spray Washer Operation

The cleaning or auxiliary medium is directed from an external connection to the spray head, located between the flanges holding the glass. This setup allows for washing the internal surface without disassembling the indicator.

Applications

Suitable for lines where simple visual observation may be degraded by glass contamination:

• chemical liquids compatible with 1.0619 or 1.4408
• process water with suspended solids
• liquids with color or organic residues
• viscous or hot fluids leaving a film on the surface
• inspection points requiring periodic internal cleaning

Selection and Limitations

The technical sheet of the 880-I does not provide an independent DN, PN, or temperature table; these must be determined in conjunction with the corresponding base version of the 880 series and process conditions. Critical selection criteria include the fluid, washing medium, washing pressure, body material, and the need for one or two spray heads.

FAQ

Does it accept an actuator?
No. It is a passive flow indicator. The additional function concerns internal glass washing.

When is a version with two spray heads requested?
When cleaning of both observation sides is required, especially in fluids that create deposits on both glass surfaces.