Ernst Instruments
888.943.5000 (973.940.1600)
SHOW Menu
  • Home
  • Product Catalog
    • Sight Flow IndicatorsSight Flow Indicators
    • Liquid Level GaugesLiquid Level Gauges
    • Sight WindowsSight Windows
    • Flow Meters & TotalizersFlow Meters & Totalizers
    • Glass & GasketsGlass & Gaskets
    • Tri-Clamp ProductsTri-Clamp Products
    • IlluminatorsIlluminators
    • Boiler Trim & CocksBoiler Trim & Cocks
  • About Us
  • Contact Us
  • Careers
  • Request Quote
  • Sight Windows

    Sight WindowsSight Windows

    A sight window is a window into a tank or vessel for visual inspection of the process application...

    Learn More
  • Liquid Level Gauges

    Liquid Level GaugesLiquid Level Gauges

    An instrument indicating the presence or the quantity of liquid in a tank, vessel, reservoir, or boiler application...

    Learn More
  • Sight Flow Indicators

    Sight Flow IndicatorsSight Flow Indicators

    A sight flow indicator is a window into the piping system to observe the flow stream, typically of liquid, through the glass window...

    Learn More

Manufacturer of Flow and Level Control
Products for Liquid and Steam Applications

EFI has joined Ernst Instruments!

EFI Merger FAQ

Announcement Letter

Ernst Model Number Cross Reference

Product Brochure

Sight Flow Indicators Sight Flow Indicators Sight Flow Indicators
Liquid Level Gauges Liquid Level Gauges Liquid Level Gauges
Sight Windows Sight Windows Sight Windows
Flow Meters & Totalizers Flow Meters & Totalizers Flow Meters & Totalizers
Glass & Gaskets Glass & Gaskets Glass & Gaskets
Tri-Clamp Products Tri-Clamp Products Tri-Clamp Products

Ernst Instruments designs and manufactures a variety of flow control products, including:

    • Sight Flow Indicators
    • Sight Glass
    • Flow Meters
    • Totalizers
    • Tubular Gauges
    • Liquid Level Gauges
    • Gauge Valves
    • Sight Windows
    • Flow Switches
    • Level Switches
    • Sanitary Tri-Clamp Products
    • Glass & Gaskets
  • APPLICATION
    SPECIALISTS
    AVAILABLE
    FOR QUESTIONS

    Contact Us
    Ernst Instruments

    21 Gail Court, Sparta, NJ 07871 USA

    • Phone: 973.940.1600
    • Fax: 973.940.1620
    • Email: sales@ernstinstruments.com
    • Terms of Service
    • Privacy Policy
    • Sitemap
    • Catalog Index
    • Clark-Reliance Corporate Site

    copyright © 2025 John C. Ernst LLC, All Rights Reserved   Site Created by Thomas Web Solutions and Powered by Navigator Platform

    ^