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Industrial Sight Flow Indicator – Threaded

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Industrial Sight Flow Indicators allow you to observe the flow of process gases and fluids such as chemicals, cooling water, foods and beverages, and petroleum-based products through a process line. Suitable for high pressure and high temperatures.

Sight Flow Indicator body material choices include carbon and stainless steel:

  • Standard unit furnished with tempered borosilicate glass
  • Standard gasket material for carbon steel is neoprene and stainless steel is Gylon®

Indicator choices include a rotor, flapper, drip-tube, or plain.

Make your selections in the four product variations below for specific unit pricing.

Delivery times will vary. L.J. Star will contact you with an estimated order delivery date.


LJ Star Sight Flow Indicators for industrial applications are the most common flow indicators style that enables visual observation of process flow through a pair of sight glasses mounted on a carbon steel body.

General Applications commonly used in industries that require a tool to monitor the speed and quality of liquid, gaseous products, or raw materials. Widely used in the following industries: Chemical and Pharmaceutical, Food and Beverage, Industrial, Agricultural, and Marine. With LJ Star Incorporated, you can be assured of high-quality industry-proven products that guarantee long-lasting use at an affordable cost.

Additional information

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Plain, Flapper, Rotor, Drip Tube


Carbon Steel, Stainless Steel