591 Flow sight glass With three viewports

Flow sight glass With three viewports

With flanged connections PN16, PN40 


Visual Checking of Filling and Flows in Piping. Sight Glasses allow for reliable Observation of Function and Performance in single devices or complete plants.

Type 591 allows observation of the flow from three sides without sacrificing stability. 

Show all product specifications

Body: 1.4571,1.4404, Steel
Glass: Borosilicate glass DIN 7080
Soda Lime Glass DIN 8902, Quartz glass, META®-Glass
Seal: Graphite MST or as desired

Operating conditions:
pressure: PN16, PN40
Temperature: 150°C (DIN 8902), 280°C (DIN 7080)

High pressure version: Available on request.

For corrosive media or steam, mica disks should be used.

ACI Type 591
DN 200
Body 1.4571
Borosilicate glass          11-591-200-1-1-1-7-00
Graphite seal
Standard construction

Observe pressure-temperature ratings acc. To DIN EN 1092-1!


Nominal diameter DN50, DN65, DN80, DN100
Pressure rating PN16, PN40
Sight glass body 1.4404, 1.4571, Andere materialen op aanvraag, Steel
Process Connection ANSI flanges, DIN flanges
Shape Inline Sight Glasses
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