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GENERAL SERVICE Series Image
  • Dial Sizes: 11/2", 2", 21/2", 31/2" & 41/2"
  • Superb quality, economical price
  • Pressure ranges to 5000 psi
Marsh Instruments General Service Steel Case Gauges are an economical, general purpose gauge for pressure
measurement from vacuum/compound through 5,000 psi. Suited for use with water, oil, air, gas, or other non-corrosive media. Typical applications include FRLs, compressors, pumps, boilers, regulators, dryers as well as commercial and industrial equipment.
SEVERE SERVICE Series Image
  • 3 Standard Mounting Options: LM, CB and U-Clamp
  • Brass or Stainless Steel Internals
  • Ranges to 10,000 psi
  • Glycerine Filled
Marsh Instruments Liquid-Filled Gauges are designed to perform in rugged applications and harsh environmental conditions - especially where pulsation and vibration are a problem. Liquid Filled Gauges offer a significant cushioning and dampening effect, reducing pointer flutter and internal gauge damage; also lubricating the internals, and reducing corrosion. All stainless steel Liquid Filled Gauges feature a ventable top fill plug for pressure relief and ease of venting after installation. Pressure ranges are available through 10,000 psi, with high pressure ranges offering a Helical Bourdon Tube for longer gauge life and increased durability. The hermetically sealed construction reduces the chance of leaks, and makes field filling an easy option. Typical applications include refineries, chemical plants, offshore platforms, oil rigs, marine applications, general industrial application and OEM processes.
500 General Purpose Series Image
  • Pressure Ranges from 30 Hg VAC to 5000 psi
  • Black Painted Steel Case
  • Phosphor Bronze Bourdon Tube
  • Brass 1/8 NPT or 1/4 NPT Connection
U.S. Gauge Series P-500 utility gauges provide economical, reliable service in a wide variety of applications including pumps, compressors, and other equipment. Series P-500 utility gauges come in PSI standard ranges with accuracy of 3-2-3%. Gauges are available in 1-1/2", 2", 2-1/2", 3-1/2", and 4-1/2" steel cases in center-back and lower mount configurations.
DIAPHRAGM Series Image
  • Accuracy: ASME B40.1 - 2/1/2%
  • Dial Sizes: 21?2", 31?2", 41?2"
  • Four Case Styles
Marsh Instruments Low Pressure Diaphragm Gauges are universally known for their dependable performance and accuracy. Incorporating a unique design feature, the diaphragm element in this gauge allows accurate low pressure readings in a variety of applications. Featuring a bronze diaphragm element, the gauge is capable of ASME Grade A- 1% accuracy for ranges above 30" of water. Ranges are available in vacuum and pressure in inches of water, ounces per square inch and millimeters of mercury.
1555 Liquid Fillable Series Image
  • Available in 1.5, 2, and 2.5 Sizes
  • Phosphor Bronze Bourdon Tube
  • Pressure Ranges up to 5000 psi
  • Dual Scale with psi and bar Display
  • Vent Plug or BUNA-N Plug for Pressure Relief and Liquid Fill Access
U.S. Gauge Models 1555, 1558 and 1559 liquid filled utility gauges are designed for a wide range of rugged service applications on pumps, compressors, hydraulic systems, machine tools, and petrochemical processing equipment. Liquid fill fluid dampens the gauge pointer movement and improves readability, making these instruments ideal for high shock and vibration applications. Models 1555, 1558 and 1559 liquid filled gauges are available in psi and bar, kPa, and kg/cm2 metric ranges. Rated accuracy is 3-2-3% of span (Grade B). Gauges feature a corrosion resistant 300 series stainless steel case and ring, and durable polycarbonate window. A phosphor bronze Bourdon tube, brass movement, and socket connections are standard. The lower mount (LM) Model 1555 comes in 2" and 2-1/2" versions with a 1/4-18 NPT connection. The model 1559 is a center back mount (CBM) gauge that comes in a 1-1/2" design with a 1/8-27 NPT connection or the 2" and 2-1/2" designs with a 1/4-18 NPT connection. The Model 1558 is a 2-1/2" center back mount (CBM) gauge with a front flange for panel mounting.
P-600 Series Image
  • Pressure Ranges from 15 psi to 5000 psi
  • Brass or Steel Case
  • Lower Stem Mounting
  • Phosphor Bronze Bourdon Tube (15 psi Beryllium Copper)
  • Polycarbonate Window
AMETEK U.S. Gauge offers a wide variety of welding and compressed gas gauges used on various types of regulators. The high pressure gauges are used for measuring cylinder or tank pressure. The low pressure gauges are used on the downstream side of the regulator to indicate regulated, reduced pressure. The low pressure gauges (15-1000 psi) are UL 252A recognized. High pressure gauges (1500-5000 psi) are UL 404 listed. Cleanliness for all gauges is in accordance with Level IV of ASME B40.100-2005. U.S. Gauge compressed gas gauges are available in 1-1/2", 50mm, 2", and 2-1/2" sizes with polished brass or gold painted steel standard.
656 Liquid Fillable Series Image
  • Pressure Ranges up to 10,000 psi for the 63mm Size and 23,000 psi for 100mm
  • 304 Stainless Steel Case with Rubber Disc for Pressure Relief
  • 316L Stainless Steel Bourdon Tube
  • Front Flange, U-Clamp, or Stem Mounted
  • Accuracy: 1.6% on 63mm Model; 1.0% on 100mm Model
The 656 Series are suitable for corrosive environments in chemical, petrochemical, refining, power, marine, and food and pharmaceutical processing applications. Liquid filled pressure gauges provide users with a number of advantages in certain measurement applications. They are ideally suited for uses on equipment where excessive vibration and pulsation are encountered, such as pumps, compressors, machine tools, etc. The liquid fill minimizes the effect of these severe environments, protects the gauge internals, and provides continuous lubrication on the mechanism, all adding up to extended service life. Liquid filling also provides greater protection of the gauge internals from corrosive atmospheres. AMETEK liquid filled gauges can be used with a variety of fill fluids including glycerin, mineral oil, and silicone oil. These gauges are available in 63 and 100mm sizes.
PRECISION SERVICE Series Image
  • Liquid-filled or dry
  • Available pressure ranges to 10,000 psi
  • Safety glass window
Stainless steel case with copper alloy internals. Ideal for heavy duty service in industrial and commercial environments. Field fillable. Typical applications include industrial machinery, oil field equipment and controls, wellheads, pipeline and general industrial.
PROCESS Series Image
  • Pressure Ranges Vacuum to 20,000 psi
  • 4 Safecase Designs
  • Dry or Liquid Filled
  • Micrometer Pointer
  • 41?2" and 6" Dials
Marsh Process Gauges are the industry standard in performance. With over 125 years of proven experience, Marsh offers the most complete line of process instrumentation in the industry. An extensive list of designs and options makes the Marsh line of Process Gauges the intelligent and practical choice in process instrumentation. All case styles feature safecase solid-front construction. Typical applications include chemical and petroleum chemical processes, compressors, power plants and oil platforms.
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