Flow indicators provide a simple and effective way to visually confirm movement within a pipeline. In many industrial systems, being able to quickly verify that media is flowing as expected can prevent downtime, reduce troubleshooting time, and improve overall operational confidence. At Process Systems, we supply industrial-grade flow indicators for use across water, steam, oil, and compatible fluids.
These products are commonly installed in pipelines where visual confirmation of flow is required without interrupting the process. By providing immediate feedback, flow indicators support maintenance teams, plant operators and engineers in identifying issues such as blocked strainers, failed pumps, malfunctioning steam traps or closed valves.
Sight glasses are one of the most widely used types of flow indicators in industrial systems. Installed directly into pipework, they allow operators to visually inspect internal flow conditions in real time. Depending on the design, internal flaps, rotors or other movement indicators respond to fluid movement, providing a clear visual signal that the system is operating correctly.
Flow indicators are typically used in:
Because they operate mechanically and do not require electrical input, sight glass flow indicators are used for their simplicity and durability. They provide an immediate visual reference point without the need for sensors, wiring or calibration.
Industrial flow indicators must be able to withstand demanding operating conditions. Materials such as ductile iron bodies, hardened viewing glass and corrosion-resistant internal components are commonly used to ensure long service life within rated pressure and temperature limits.
Correct product selection is critical. Pressure range, temperature exposure, thermal shock resistance and media compatibility should always be considered when specifying a flow indicator. When properly selected and installed, these devices offer dependable performance and require minimal maintenance.
Easy access for inspection is also important. Flow indicators should be installed in locations where operators can safely and clearly view the window, supporting routine operational checks and preventative maintenance programs.
At Process Systems, we supply practical, industrial-grade components that integrate easily into existing systems. Our flow indicators are selected to suit common Australian industries and are available for fast dispatch.
When you order online, you receive:
Whether you are specifying equipment for a new installation or replacing an existing unit, we make it straightforward to source reliable flow indication solutions. Browse the range and order flow indicators online today.
SKU: SF-1S
Ductile Iron Flap Type Sight GlassSize 1/2" to 2" BSPT
Body Ductile Iron
Pressure Range 0 to 10 BAR
Temperature 0 to 150°C
