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

  • Quality Materials: Tempered glass conforms to BS3463, DIN 7081.  All parts are ASTM grade and listed in ANSI 31.3.
  • Quality Assurance Testing: All gauges are hydrostatically tested to 1.5 times the rated pressure at 100° F (38° C).
  • No-Leak Design: Recessed gasket seat in chamber and cover prevents leaks often caused by shifting gaskets.
  • Liquid-Gas or Liquid-Liquid Interface Applications: Available in either reflex or transparent styles to satisfy all application requirements. 
  • NACE Compatible: Wetted parts conform to NACE MR-01-75 specifications for sour gas service. 

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

FW Murphy Production Controls offers support for all our products. If you are unable to find the product that you need, please call us at 918-957-1000.


Connections: 1/2” FNPT top-bottom connections.
Pressure/Temperature Ratings:  Refer to Sales Bulletin
Gauge Length/Weight (Refer to Sales 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

Liquid Level Gauge