100 mm Severe Service Gauge

Brand: Marsh Bellofram Group of Companies

With available ranges to 10,000 psi, 100 mm Severe Service Gauges from Marsh Instruments are liquid-filled severe service gauges, expressly designed to provide reliable pressure measurements in harsh and demanding industrial and OEM environments, particularly where pulsation and vibration are a concern.

The gauges are filled with glycerin to offer a dampening effect, while reducing pointer flutter, as well as offering significant shock reduction to instrument-grade components. They also lubricate internal components, effectively reducing risk of corrosion.

These liquid-filled gauges feature brass or stainless steel components and a ventable top fill plug for pressure relief and ease of venting after installation.

Units are hermetically sealed for reliable operation in harsh or dirty environments, while reducing the chance of leaks and facilitating ease of refilling in the field.



  • ASME Grade 1A - ± 1 % of Range across full scale

Case Size

  • 100 mm: diameter (4.0”)

Case Material

  • Forged Brass

Case Styles

  • LM - Lower Mount

Tube & Socket

  • Copper Alloy


  • Brass


  • 100 mm: 1⁄2” NPT


  • 30” Hg vacuum to 200 psi, and 15-10,000 psi
  • 0 to 30” Hg Vacuum, Compound Ranges

Dial Standard

  • Single Scale psi

Dial Color

  • Black Markings on White


  • Aluminum, Black Painted


  • Acrylic


  • 100 mm: Chrome-Plated Steel

Fill Medium

  • Glycerine Standard


  • Rubber plug with snip-off feature


  • 100 mm 4.0 lb

  • Refineries, chemical plants
  • Offshore platforms
  • Oil rigs
  • Marine applications
  • General industrial application
  • OEM processes


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