The simplest instruments are often the most trusted. A visual flow indicator needs no power, no wiring and no software. You look at it and you know.

The Ajax visual flow indicator gives local confirmation of flow on cooling water, seal water and utility lines across oil and gas plants. It is a quick check during rounds and a useful backup to remote alarms. F. Bamford has made flow instrumentation in Stockport since the 1940s and the visual range is part of that core line up. Get the datasheet for sizes and materials.