Jacoby-Tarbox, founded in 1914, offers the world’s most extensive line of sight flow indicators and sight windows. The original US manufacturer of sight flow indicators is now manufactured by the ISO 9001 registered Clark-Reliance Corporation. Today, we continue to offer innovative, trend-setting products, while meeting more industry specifications “out of the box” than any other sight flow indicators on the market. Since 1995, Jacoby-Tarbox redesigned all of our flanged sight flow indicators in accordance with ASME B31.1 and B31.3 for pressure versus temperature ratings, while standardizing on only listed material specifications for all applicable materials of construction. Sight flow indicators are available to meet FM requirements, 3A specifications or for PED-governed applications.

Our sight flow indicators and sight windows can be used to verify process conditions throughout piping, vessels and other equipment, whether the process is liquid or gas. When you select Jacoby-Tarbox, our experienced and dedicated representatives work with you to maximize the duty cycle of your units in nearly every combination of pressure and temperature in your process. Get positive indication of flow or other material properties, such as color, change in state, or simply material presence while in any orientation.

 

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Bulls -Eye Units Threaded
 
Jacoby Tarbox Bulls-Eye Units
 
Jacoby-Tarbox Tubular Units
   
         
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