Intech Manufacturing Sourcing Intech Manufacturing Sourcing 
A sight glass, also called a sight window or sight flow indicator, provides a precise method for seeing inside a tank or process vessel. Operators use sight glass to visually verify stages of a process, inspect process media, and to observe liquid levels. The indicator ball at the center of the sight glass is highly sensitive to the water content inside the tank and will change color as the water content changes.
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Intech Manufacturing is a professional manufacturer of standard and custom valves, couplings and fittings, machining parts, plastic parts, and rubber parts, etc.