Product Description

The Steam-Trac ST-350 is designed specifically for steam service to 350 PSI. The reflex borosilicate glass has prisms molded into the process side which will display black for water and white for steam.

All connections and materials fully comply with ASME requirements, and the gauge may
be used as a Direct Reading Sight Glass for compliance to ASME PG-60. Since water appears completely different than steam, it is not necessary to have overlapping sections. Multiple section gauges will have a continuous chamber constructed of a single piece of bar.

Recessed gasket seats and a forged cover make the ST-350 easy and inexpensive to maintain. Live-loading with spring washers is standard and will ensure maintenance of original torque value in cyclic conditions.

Product Features

  • For 350 PSI Working Steam Pressure (WSP)
  • Fully compliant with ASME as a Direct Reading Water Gauge
  • Multiple sections, continuous one-piece chamber
  • Spring washers for constant torque
  • Recessed gasket face in chamber and cover
  • Custom built per specifications
  • Studs, nuts and washers are nickel plated
  • High temperature coating

Product Specifications


  • Chamber: A-105, Carbon Steel
  • Gasket: Grafoil® GHR
  • Glass: Tempered Borosilicate
  • Cover: Forged Carbon Steel
  • Washers: 17-7 PH Stainless Steel, Nickel Plated
  • U-Bolts: Nickel Plated
  • Nuts: Nickel Plated



Compatible Products


Document Title Category
200-00 Level-Trac & Steam-Trac Brochure
Brochures, Product Line Brochure
200-01 ST-350 Steam-Trac Cut Sheet
Data Sheet
210-00 Direct Reading Water Gauge Selection Guide
Technical Documents
210-01 Suggested Minimum Center/Center Data
Technical Documents
230-01 Steam -Trac IOM
230-01 Steam -Trac IOM Espanol
220-02 ST-350 Steam-Trac Multiple Section Drawing
Technical Documents
210-02 SV-450 Steam Valve Model Code Guide
Data Sheet, Magne-Trac
210-03 SV-1600 Steam Valve Model Code Guide
Data Sheet, Steam-Trac
QTS Water Steam Table
200-08 See-Level Amber Cut Sheet
Data Sheet, Steam-Trac
Visible Range Placement – Steam-Trac
Technical Documents
Viewing Angle Specification
Data Sheet, Steam-Trac
Steam-Trac and Level-Trac RFQ Form