Marshalltown Value Series Pressure Gauge

Marshalltown Value Series Pressure Gauge

With available diameters of 1.5″ and 2″, the Marshalltown value series pressure gauge from Marsh Instruments is the most economical, general purpose gauge in our general service product portfolio, with monitoring capabilities ranging from 15 to 200 psi

General Service Steel Case Gauge

General Service Steel Case Gauge

The General Service Steel Case Gauge from Marsh Instruments is a family of cost-effective, general purpose instruments, designed for reliable pressure measurements and suitable for use with water, oil, air, gas or other noncorrosive media from vacuum/compound through 5,000 psi.

40mm and 50mm Liquid Filled Severe Service Gauges

40mm and 50mm Liquid Filled Severe Service Gauges

Marsh 40mm and 50mm Liquid Filled Severe Service Gauges are a family of liquid filled gauges, expressly designed to provide reliable pressure measurements in harsh and demanding industrial and OEM environments, particularly where pulsation and vibration are a concern.

63mm Severe Service Gauges

63mm Severe Service Gauges

With available ranges to 10,000 psi, 63mm Severe Service Gauges from Marsh Instruments are a series of liquid filled severe service gauges are expressly designed to provide reliable pressure measurements in harsh and demanding industrial and OEM environments, particularly where […]

100mm Severe Service Gauges

100mm Severe Service Gauges

With available ranges to 10,000 psi, 100mm 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 […]

63mm and 100mm Forged Brass Gauges

63mm and 100mm Forged Brass Gauges

With available pressure ranges to 10,000 psi, Marsh 63mm and 100mm Forged Brass Gauges are designed for top performance in harsh environments where corrosive gas or other media are not of concern.

NACE MR0175 Compliant Stainless Steel Gauges

NACE MR0175 Compliant Stainless Steel Gauges

Marsh Instruments NACE MR0175 Compliant Stainless Steel Gauges are built for extended life in harsh and corrosive sour gas H2S environments.

Quality Series 100mm, 160mm Stainless Steel Internal Gauges

Quality Series 100mm, 160mm Stainless Steel Internal Gauges

Quality Series 100mm, 160mm stainless steel internal gauges from Marsh Instruments are offered in pressure ranges to 10,000 psi. They are designed for extended service life within harsh and corrosive environments.

Quality Series 100mm Copper Alloy Internal Gauges

Quality Series 100mm Copper Alloy Internal Gauges

About Quality Series 100mm Copper Alloy Internal Gauges. Available in liquid filled or dry versions, Marsh quality series 100 mm copper alloy internal pressure gauges are designed for extended service life in heavy service industrial and commercial environments, with reliable […]

Process Gauges

Process Gauges

Process gauges from Marsh Instruments. With over 125 years of proven experience, Marsh offers the most complete line of process gauge instrumentation in the industry. An extensive list of designs and options makes them the intelligent and practical choice for […]

Diaphragm Gauges ASME Grade A-1% Accuracy

Diaphragm Gauges ASME Grade A-1% Accuracy

Marsh low-pressure diaphragm gauges are universally known for their dependable performance and accuracy, with ASME Grade A-1% accuracy for ranges above 30″ of water.

Vacuum Cleaner Test Gauge

Vacuum Cleaner Test Gauge

Vacuum Cleaner Test Gauge from Marsh Instruments.  Please consult the factory for details.

Gas Pressure Test Set

Gas Pressure Test Set

Gas Pressure Test Set from Marsh Instruments. Please Consult Factory for details.

Water Test Gauge

Water Test Gauge

Marsh Water Test Gauge is designed to connect directly to a standard 3⁄4″ water faucet or hose.

Paper Machine Gauge (Pulp and Paper)

Paper Machine Gauge (Pulp and Paper)

About the Paper Machine Gauge from Marsh Instruments. The Chrome Plated Paper Machine Gauges are available in nine ranges and fit existing panel cutouts.

Digital Pressure Indicator

Digital Pressure Indicator

The Marsh Bellofram digital pressure indicator is a portable, lightweight, handheld testing and calibration instrument, designed to indicate pressures of up to 50 psig at accuracy levels of ±0.25% of reading ±1 count. Design of the digital pressure indicator incorporates […]

Filter, Regulator, Lubricator Assemblies

Filter, Regulator, Lubricator Assemblies

Filter Regulator Lubricator Assemblies (FRLs) Marsh Bellofram FRL’s are pre-packaged, modular assemblies of popular configurations of air filters, regulators and lubricators offered as a single unit. Designed with economy and convenience in mind, Marsh Bellofram FRL’s are available in miniature and […]

Hot Water Thermometer

Hot Water Thermometer

The Hot Water Thermometer from Marsh Instruments is an industrial grade Hot Water Thermometer, designed for high-accuracy temperature readings of hot water lines, boilers and hydronic systems to +250°F (+121°C). Units feature a bi-metallic element, aluminum stem and case material and offer […]

Bimetal Thermometers

Bimetal Thermometers

Bimetal Thermometers from Marsh Instruments feature an all-welded corrosion-resistant 304 stainless steel construction. These bimetal thermometers combine the benefits of economy and reliability for locally mounted temperature indication requirements in dual scale ranges from -50° to +1,000°F (-40° to +525°C). […]

Industrial Thermometer

Industrial Thermometer

The Industrial Thermometer from Marsh Instruments offers high-performance monitoring in temperature ranges to +300°F (+150°C) in a compact design. The large 9″ dial scale of the Industrial Thermometer permits easy reading at extended distances. The thermometers feature a glass-reinforced nylon […]

Submarine Thermometer

The Submarine Thermometer from Marsh Instruments offers both durability and performance, with a manufactured standard accuracy of 1% of span and temperature monitoring capabilities to +400°F (+200°C). Units feature a 5-inch v-shaped aluminum scale with black markings and a lens […]

Pocket Thermometer

Pocket Thermometer

The industrial grade pocket thermometer from Marsh Instruments is designed to provide portable, on-demand temperature monitoring capabilities to +550°F (+288°C). Each unit offers a 1” dial with 5” long 304 stainless steel stem and plastic lens and comes with a […]

Digital Pocket Thermometer

Digital Pocket Thermometer

The Digital Pocket Thermometer from Marsh Instruments is designed to provide portable, on-demand temperature monitoring capabilities to +302°F (+150°C). Accuracy is ±2°F with an update time of 10 seconds. The thermometer features digital temperature readout to a 3.5-digit LCD display. […]

Tridicators (Boiler Gauges)

Tridicators (Boiler Gauges)

Tridicators from Marsh Instruments, also known as boiler gauges, are designed to indicate pressure in psi and altitude for pools and spas in feet of H2O, as well as in units of Fahrenheit or Celsius (°F and °C), making them […]

Gas Test Gauge

Gas Test Gauge

Use to pressure test all new gas installations for leaks and passing inspection codes. After installing Gas Test Gauge, the system is pressurized with air. Any leakage will be indicated by a pressure drop on the gauge. Typical applications include […]

Servicemans Test Gauge

Servicemans Test Gauge

The Servicemans Test Gauge from Marsh Instruments is a Deluxe Serviceman Test Gauge, designed to assure the modern serviceman the best possible gauge for testing refrigeration equipment. Corresponding, easy-to-read temperature scales are printed in red on the inner arcs of […]

Manifold Gauge

Manifold Gauge

The Manifold Gauge from Marsh Instruments.  These gauges are designed for the pressure measurement of refrigeration systems. All dials are furnished with corresponding temperature scales for the various refrigerants. Dials feature R-12, R-22, and R-502. Standard connections are 1⁄8 NPT […]

Refrigeration Ammonia Gauge

Refrigeration Ammonia Gauge

The Refrigeration Ammonia Gauge from Marsh Instruments includes a restrictor that protects the gauge against sudden shock or pulsating pressure. The inner dial arc shows pressure, outer arc shows the corresponding temperature scale. The Marsh Instruments Refrigeration Ammonia Gauge is […]

Refrigeration Gauge

Refrigeration Gauge

The Refrigeration Gauge from Marsh Instruments is sturdily constructed and tested to give long, continuous, accurate service. In addition to the standard pressure or compound scale, dials also show the corresponding temperature scales for R-12, R-22, and R-502, in the […]

Contractors Gauge

Contractors Gauge

Marsh Instruments Contractors Gauge is an HVAC Service Gauge, newly redesigned gauge with a long-life movement to meet the needs of contractors in air conditioning, heating, plumbing and refrigeration. This rugged and reliable gauge is economically priced and offers many […]

Heating System Gauge

Heating System Gauge

The Heating System Gauge from Marsh Instruments are available in 3-1⁄2″ and 4-1⁄2″ dial sizes in the most popular ranges. An adjustable red altitude pointer is standard on feet-of-water gauges. This feature allows the user to indicate the head of […]

B8498 Gauge Protector with Rubber Diaphragm Seal

B8498 Gauge Protector with Rubber Diaphragm Seal

The Model B8498 Gauge Protector with Rubber Diaphragm Seal from Marsh Instruments is designed for extremely high volume displacement. Ideally suited for gauges and instruments with operating pressures up to 200 psi and vacuum applications. Available in 1⁄4″ threaded connections […]

Model 12000 Mini Serviceable Rubber Diaphragm Seal

Model 12000 Mini Serviceable Rubber Diaphragm Seal

The Model 12000 Mini Serviceable Rubber Diaphragm Seal from Marsh Instruments is designed for use with gauges and instruments operating at pressures of 2500 psi with stainless steel models and 500 psi with PVC models. Marsh Bellofram recommends the use […]

Model 13000 Miniature All Welded Diaphragm Seal

Model 13000 Miniature All Welded Diaphragm Seal

The Marsh Instruments Model 13000 Miniature All Welded Diaphragm Seal is designed for use with 2” to 3.5” bourdon tube gauges with a minimum pressure of 100 psi. Seals are available in all 316 stainless steel or with Hastelloy™ C […]

Model 13040 All-Welded Diaphragm Seal

Model 13040 All-Welded Diaphragm Seal

The Marsh Bellofram Model 13040 All-Welded Diaphragm Seal is designed for use with 2” to 4.5” bourdon tube gauges with pressure ranges from vacuum to 1000 psi. Seals are available in all 316 stainless steel or with Hastelloy™ C process […]

Model 14000 Removable Diaphragm Seal

Model 14000 Removable Diaphragm Seal

The Marsh Instruments Model 14000 Removable Diaphragm Seal features a clamped metal design with interlocking construction inside of the bolt circle for perfect alignment. The upper and lower housings clamp the diaphragm in place and allow for ease of field […]

Model 14040 Welded Diaphragm Seal

Model 14040 Welded Diaphragm Seal

About the Model 14040 Welded Diaphragm Seal. The Marsh Bellofram Model 14040 Welded Diaphragm Seal offers a special diaphragm-to-upper design that allows the upper housing to be removed with the instrument still in place, without losing liquid fill. The same […]

Thermowells

Thermowells

Thermowells from Marsh Instruments are available in customer choice of brass or stainless steel. They are used to isolate and protect the sensing instrument from temperature extremes, and permit removal of a sensing instrument without shutting down the process.  Thermowells […]

Precision Test Gauges

Precision Test Gauges

Precision Test Gauges from Marsh Instruments are designed to provide reliable pressure measurements in harsh and corrosive sour gas environments. The Marsh Test Gauge is designed with a black painted steel housing and the choice of copper alloy or 316 […]