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1555/1558/1559 Liquid Filled Pressure Gauge

1558 Pressure GaugeThe Model 1555/1558/1559 Liquid Filled Gauge has a SST case, brass socket, and a phosphor bronze bourdon tube for applications requiring the protection of liquid filling. The 1555/1558/1559 gauges come in a low mount, center back or front flange configurations. They are available in gauge sizes for every need: 1½”, 2”, 2½”, and 4”.

Liquid fill fluid dampens the gauge pointer movement and improves readability, making these instruments ideal for high shock and vibration applications. These gauges are NEMA 4X / IP66 compliant to extend the life of your pressure gauge.

Model 1555/1558/1559 liquid filled gauges have a crimped ring and dual scale psi/bar or kPa/psi dial as standard. The pressure gauge is suitable for environments with high vibration, pulsation, pressure spikes and condensation build up. Liquid filling protects the internals of the pressure gauge, and dampens the pointer to improve readability. Liquid filling also eliminates condensation build up due to temperature fluctuations on the inside window. The case is material is 304 SST with a crimped on window and a liquid fill plug at the top of the case for easy field filling if needed. The 1½”, 2”, and 2½” versions meets ASME B40.100 Grade B accuracy (±3-2-3%) and the 4” unit meets Grade B+ accuracy (±1.6%). Pressure ranges are from Vacuum to 10 000 psi.

Gauge size: 1½", 2", 2½", or 4"

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Accuracy:  ±(3-2-3 % FS) ; ±(1.6% FS) for 4" gauge

Size:  1½", 2", 2½", or 4"

Wetted Parts:  Brass & Phosphor Bronze
Ranges:  Dual scale psi/bar (100 x kPa)
Wetted Parts:  Brass & Phosphor Bronze
  • Documentation +

  • Options +

    • Liquid Filling
      • Order Code: LG, LS, or LM - Extend the life of your pressure gauges. Liquid filled pressure gauges are generally recommended over dry gauges due to performance and durability. When USG’s liquid filled gauges are filled with Glycerin (LG), Silicone (LS), or Mineral Oil (LM) you’re helping to prevent gauge failure commonly caused by excessive vibration or pulsation. Glycerin is the most common fill fluid and is typically used for room-temperature applications. Silicone is used for more extreme temperature applications. Mineral Oil can also be used for higher temperature ranges.
    • NIST Calibration Certificate
      • Order Code: /C - NIST (National Institute of Standards and Technology) Certification of Calibration states that the pressure gauge was tested at multiple test points and is within its stated tolerance of accuracy. Gauge is shipped with a sticker on the side of the gauge noting the certification number and date, and NIST certificate.
    • Dual Scale Dials
      • US Gauge offers most pressure ranges in dual scale, such as psi & kPa, psi & BAR, psi & kg/cm2, or single scale metric such as kPa, kg/cm2, or BAR. Dual scale dials are available at no extra charge. Please reference our data sheet or email customer service at with any questions.
  • Application Notes / How To Guides +

    • Valve Positioner Replacement Gauges

      Replace standard gauges that commonly rust with corrosion resistant pressure gauges.