Skip to content
  • 417-831-5100
  • 2000 North Alliance Avenue Springfield, MO 65803
TCI 25th Logo Landscape
  • Home
  • About
  • Resources
    • Processes
    • TCI Calculator
    • Blog
  • Products
    • Tank Heads
    • Cylinders
    • Manways
    • Handholes
    • Bottom Tank Valves
    • Sight Glasses & Lights
    • Sanitary Fittings
    • 5-Axis Cutting
  • Careers
  • Contact
  • Home
  • About
  • Resources
    • Processes
    • TCI Calculator
    • Blog
  • Products
    • Tank Heads
    • Cylinders
    • Manways
    • Handholes
    • Bottom Tank Valves
    • Sight Glasses & Lights
    • Sanitary Fittings
    • 5-Axis Cutting
  • Careers
  • Contact
Get A Quote

Standard Industrial Sight Flow Indicator (View Through), Threaded Mount

Get a Quote
Std-Threaded-VFI

Standard Threaded Models Specifications

Extensive engineering and design have resulted in the highest industry standard for visual flow indicator technology. Uncompromising levels of quality, safety and technological excellence are standard features in the complete line of L.J. Star Incorporated Standard Threaded Model visual f low indicators.

Description

All standard threaded models in the L.J. Star Incorporated line of visual flow indicators carry full ANSI rating and are available in several application-specific configurations. ANSI designed for 150# or 300# service, threaded units are available in sizes from 1/2” to 2”.

Styles

Threaded units are available in five styles designed to accommodate various mounting positions, fluid characteristics, flow rates and directions:

  • Plain Style – May be installed in any position to observe fluid flow in any direction. These style indicators are usually employed to detect either the presence or absence of solutions, or to observe fluids for turbulence, color or clarity.
  • Drip Tube Style – This style is well suited for vertical lines with downward flow direction. These units are particularly recommended for applications characterized by low or intermittent flow rates, such as distillation processes.
  • Flapper Style – Recommended for monitoring either horizontal or vertical lines with upward flow. The f lapper position indicates current flow rate. Flapper style indicators are the appropriate choice for use with clear and semi-opaque solutions.
  • Rotator Style – This style indicator may be installed in any position to indicate flow in any direction. The visibility of rotor motion makes this style particularly well-suited for monitoring clear, translucent or dark solutions.
  • Gaseous Style – Your answer for monitoring horizontal or vertically upward low velocity fluid streams. The special Teflon® indicator is very sensitive to the movement of gas. This allows you to effectively detect the existence or absence of flow.

Materials of Construction

  • Standard alloys – 316 Stainless Steel; Carbon Steel
  • Optional alloys – Monel®; Hastelloy®; Alloy 20
  • Standard gasket materials – Neoprene; Gylon®
  • Optional gasket materials – Buna N; Viton®; PTFE ; silicone, graphite, and nonasbestos gaskets
  • Optional window materials – Metaglas® Prestressed Safety Glass, Quartz

Standard Safety and Maintenance Features

  • Full ANSI Class Rating
  • Independently bolted glass retainers
  • Tempered borosilicate glass
  • Investment cast surface finish
  • Acrylic enamel coating (carbon steel unit)
  • Cast metal glass retainers
  • Stainless steel glass retainers and Gylon® gaskets (stainless steel units)
  • In-stock delivery

CLICK HERE TO DOWNLOAD THE DATASHEET

Contact us today
to discuss your needs

Contact Us

TCI Mission Statement

Attract and retain customers by providing superior tank components, focusing on our commitment to building mutually beneficial partnerships.

Facebook-f Instagram Linkedin Youtube

Navigation

  • Home
  • About
  • Careers
  • Blog
  • TCI Calculator
  • Contact
  • Terms and Conditions

Products

  • Tank Heads
  • Cylinders
  • Manways
  • Handholes
  • Bottom Tank Valves
  • Sight Glasses and Lights
  • Sanitary Connections
  • 5-Axis Cutting
TCI 25th Anniversary White Logo
2000 North Alliance Avenue Springfield, Missouri 65803
  • 417-831-5100
  • 417-831-5445
New LJ Star - Logo

Copyright © 2025 Tank Components Industries · All Rights Reserved · Web Design by 417 Marketing