BMD Glass Liquid Level Gauges

The LG20 Glass Liquid Level Gauge is a rugged flat glass gauge for mid-range pressure temperature applications.

  • Tempered glass conforms to BS3463, DIN 7081.  All parts ASTM grade and listed in ANSI 31.3
  • Gauges hydrostatically tested to 1.5 times the rated pressure at 100° F (38° C)
  • Recessed gasket seat in chamber and cover prevents leaks often caused by shifting gaskets
  • Liquid-Gas or Liquid-Liquid Interface Applications: Available in reflex or transparent styles to satisfy all application requirements
  • Wetted parts conform to NACE MR-01-75 specifications for sour gas service

FW Murphy is the exclusive BMD distributor for new equipment packages. 

  • Overview
  • Specifications
  • Literature

The LG20 Glass Liquid Level Gauge’s  standard construction includes a solid one-piece chamber machined from carbon steel with covers, toughened glass and chrome-molybdenum bolts and nuts. All metal parts are rustproofed. Recessed gasket seat prevents movement and ensures leak-free service.

  • Connections: 1/2” FNPT top-bottom connections
  • Pressure/Temperature Ratings:  Refer to bulletin
  • Gauge Length/Weight (Refer to bulletin): Gauge sections are available in 3-9 standard glass sizes. For longer size requirements, multiple units can be constructed with multiple vision slots in a continuous solid bar chamber.
  • Construction Materials:
    • Liquid Chamber: Carbon steel
    • Cover: Carbon steel
    • Bolts and Nuts: Plated carbon steel

For more information about this product, you can download the related literature here:

Sales Bulletin (2015360; revision date – 10/2022)