Flanged 360° Full View Sight Flow Indicator

The DOUGLASS flow sight glasses with 360° indication allow the user a total view of the fluid line from any point; facilitating the detection of anomalies such as color, bubbles, flow intermittencies and sediment accumulation.


Douglass’s 360° View Sight Flow Indicator is an innovative solution designed to enhance fluid monitoring across a wide spectrum of industrial applications. This cutting-edge device allows for comprehensive visibility of fluid flow from any angle, facilitating unparalleled observation of fluid characteristics such as clarity, color, and presence of particulates.

Constructed with durability in mind, it can accommodate a range of pressures, making it versatile for use in various settings from chemical processing to water treatment systems. The sight flow indicator’s seamless integration into existing pipelines, coupled with its ability to withstand harsh industrial conditions, underscores its utility and reliability.

This type of sight flow indicators have flanged connections, which can be 150PSI or 300PSI, with face-to-face lenghts from 3″ to 60″.

Connection Type NPT Threaded
Types of flow indication 360 Vision
Working pressure From 0 to 300 PSI
Working temperature 75mm
Minimum length -45°C – 560°C
Maximum length 1500mm
Smallest flange 1/2″
Largest flange 10″
Flange Manufacturing Materials Carbon steel with anti-corrosion coating, stainless steel (304
or 316L), brass, polycarbonate, polypropylene, Teflon.
Materials for gasket
Buna, Neoprene, Teflon, Sanitary rubber, EPDM, Viton
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