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Marsh Catalog

Product catalog summary

Overview: The document provides comprehensive specifications and options for Marsh Instruments' severe service liquid-filled gauges, designed for harsh environments with pulsation and vibration. These gauges are suitable for use in refineries, chemical plants, oil rigs, marine, and general industrial processes.

Specifications:

Materials: Cases are made from 304 stainless steel or forged brass, with internals available in copper alloy or stainless steel.
Accuracy: Varies by model, with ASME Grade B (±3/2/3%) for some and ASME Grade 1A (±1%) for others.
Sizes: Available in 40mm, 50mm, 63mm, and 100mm diameters.
Mounting Styles: Options include Center Back Mount (CB), Lower Mount (LM), and U-Clamp Mount (UC).
Connections: Typically 1/4 NPT, with some models offering 1/2 NPT.
Pressure Ranges: From vacuum to 20,000 psi, depending on the model.
Dial: Dual scale psi and kPa, with black markings on a white background.
Window: Made from polycarbonate or safety glass.
Fill Medium: Standard is glycerine, with silicone available as an option.

Features:

Liquid-filled gauges provide cushioning and dampening effects, reducing pointer flutter and internal damage.
Hermetically sealed construction minimizes leaks and allows for easy field filling.
Ventable top fill plug for pressure relief and ease of venting after installation.

Options:

Custom dials and logos available upon request.
Special restrictors and connections can be customized.
Various fill mediums and dial scales are available.

Applications: These gauges are ideal for use in environments where pulsation and vibration are prevalent, such as in oil and gas, marine, and OEM processes.

Master Test Gauges (Series 'D'): Designed for precision laboratory and industrial applications requiring high accuracy, offering pressure readings up to 10,000 psi with an accuracy of ±0.25% of span, complying with ASME Grade 3A specifications.

Inspector's Test Gauges: Intended for use by inspectors of steam boilers, air brakes, and pressure systems, featuring a 3” dial, a nickel-plated brass case, and an accuracy of ±0.5% of span (ASME Grade 2A).

Process Gauges: Available in 4½” and 6” sizes, with pressure ranges from vacuum to 20,000 psi, featuring a safecase design for safety and can be dry or liquid-filled.

Diaphragm Gauges: Known for dependable performance in low-pressure applications, featuring a bronze diaphragm element and offering ASME Grade A accuracy for ranges above 30” of water.

Thermometers and Thermowells: Specifications include accuracy, case material, dial sizes, stem lengths, and connection types. Thermowells are available in various materials and designs.

Digital Pressure Indicator: Converts pressure input to LCD digital readout with high accuracy, featuring a portable design with a rechargeable battery.

Selection and Use of Pressure Gauges: Considerations include pressure range, temperature range, system wear conditions, and ambient conditions. Liquid-filled gauges are recommended for environments with shock, vibration, or corrosive atmospheres.

Pressure Gauge Operating Principle: Bourdon tube pressure gauges measure pressure and vacuum in clean, non-clogging media without additional power.

Chemical Compatibility: Media must be compatible with the pressure instrument's wetted parts, with a chemical compatibility chart provided.

ASME B40.1 Grade Accuracy: Accuracy grades range from 3A (±0.25% full scale) to B (±3/2/3% of span).

Terms and Conditions: Includes order cancellations, limited warranty, return policy, and product warnings. The warranty covers defects for one year under normal use, with liability limited to the value of the merchandise involved.

Catalog excerpts

1-4 Ouich Selector Harsh Gauge Selection Hade easy! 5-18 Fiirers Regulators Lubricators FHL's. fillets. Regulators. Filter-Regulators. Lubricators (5-17) Accessories (19) 13-25 General Service Gauges Harstialltorun Value Series (19-21) General Service (22-8) 26-31 Severe Service Gauges 40mm 8 50mm (29). G3mm Severe Service (27- 29). 100mm Severe Service (29-31). G3mm & 100mm Brass Gauges (31) 32-41 Precision Service Gauges Oualitq Series 100mm Stainless Steel Internal (32), Qualitg Seiies 100mm Copper Rllog Internal (33). HI'160mm Stainless Steel (34). 100mm Elite Stainless Steel (35). Oualitq...

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Quick Selector Gauge Series: Gauge Series: Gauge Series: Gauge Series: Gauge Series: 100mm Stainless Steel NACE Option Quality Gauge Test Gauge Accuracy ASME: Accuracy ASME: Accuracy ASME: Accuracy ASME: Accuracy ASME: Case Size: Case Size: Case Size: Case Size: Case Size: Case Material: Case Material: Case Material: Case Material: Case Material: Steel, black painted Steel, black painted Case Styles: Case Styles: Case Styles: Case Styles: Lower Mount Safecase with blow-out back construction; Lower Mount Case Styles: Lower Mount Tube & Socket: Tube & Socket: Tube & Socket: Grade 1A = ±1% full...

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Quick Selector Gauge Series: Gauge Series: Gauge Series: Gauge Series: Master Test Gauge Inspector’s Test Gauge Process Gauge Diaphragm Gauge Accuracy ASME: Accuracy ASME: Accuracy ASME: Accuracy ASME: Case Size: Case Size: Case Size: Case Size: Case Material: Case Material: Case Material: Brass, nickel plated Safecase polypropylene (turret style only) & aluminum Case Material: Case Styles: Case Styles: Case Styles: Lower mount Turret, back flange case, front flange Mount, Lower or Lower Back Mount Case Styles: Lower Mount Tube & Socket: Tube & Socket: Tube & Socket: Copper Alloy Copper Alloy...

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Quick Selector Gauge Series: Gauge Series: Gauge Series: Gauge Series: Gas Pressure Test Set Vacuum Test Set Paper Machine Gauge BiMetal Thermometers Accuracy ASME: Accuracy ASME: Accuracy ASME: Accuracy ASME: Case Size: Case Size: Case Size: Case Size: 2”, 3” & 5”, standard stem lengths of 21⁄2” to 24” Case Material: Case Material: Case Material: Case Material: Grade A=±2/1/2 (± 1% of range across middle half of scale) and Grade B=±3/1/3% for ranges (below 30” H2O) Grade B ±3/2/3% (±2% of range across middle half of scale) Provided in grey polyethylene case with Steel, black painted 3 ft. of...

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Inin iiiiii liiiil iiiiii

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FRL Ordering Information FRL Features Modular design for service & interchangeability Small package size and light weight construction Competitively priced Filters MA13 has polycarbonate bowl with metal guard; threaded type MA14, MA15, MA17 have polycarbonate bowl with metal guard, bayonet type Stock Elements 5, 25 or 50 micron Manual, semi-auto or auto drain available Regulators Diaphragm operated balanced poppet design, relieving type Superior droop performance Panel, pipe, or bracket mounting Metal body, polycarbonate bonnet and knob Non-rising adjustment knob with push-pull lock ring feature...

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FRL‘s REGULATOR - SERIES MRMODEL MA13R, MA14R, MA15R Panel cut hole dia For Details of Clamp see optional accessories

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For Details of Clamp see optional accessories

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FRL‘s FILTER WITH INTERNAL HUTODRHIN - SERIES MRMODEL MA14FXXXA, MA15FXXXAMODEL MA17FXXXA MODEL For Details of Clamp see optional accessories

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For Details of Clamp see optional accessories

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FRL‘s LUBRICATOR SERIES MR MODEL MA13L For Details of Clamp see optional accessories

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LUBRICATOR WITH METAL BOWL - SERIES MB MODEL MA13LXXM For Details of Clamp see optional accessories

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For Details of Clamp see optional accessories

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FRL‘sFILTER REGULATOR COMBINATION WITH INTERNAL HUTODRHIN - SERIES MHMODEL MA14FRXXXXA, MA15FRXXXXA MODEL MA17FRXXXXA A J For Details of Clamp see optional accessories

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FRL's FILTER REGULATOR COMBINATION WITH METRL BOWL- SERIES MR MODEL MA13FRXXXXXM For Details of Clamp see optional accessories

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FRL‘sFRP MODULAR - SERIES MRMODEL MA13FRP THU MA15FRP - WALL MOUNTING BRACKET MODEL MA17FRP- WALL MOUNTING BRACKET F G0 WALL MOUNT MODEL

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FRL MODULAR - SERIES MR MODEL MA13FRL THRU MA15FRL-WALL MOUNTING BRACKET MODEL MA17FRL - WALL MOUNTING BRACKET WALL MOUNT

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lllll Hull HCCESSDRiES - CLRMPS CLAMP FOR FILTER, LUBRICATOR MODEL CLAMP FOR REGULATOR MODEL HCCESSDRIES - FOR MODULRR CDNSTRUCTiON WALL MOUNTING BRACKET How to Order: Mention the ordering number required Example: Wall Mounted Bracket for 3/8 Filer, Regulator, Lubricator Series F14, R14, L14 : Ordering no: A2W02 REPLACEMENT FILTERS

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Inin iiiiii liiiil iiiiii General Service TYPE DIAL STANDARD Dual scale psi and kPa DIAL COLOR Black markings on white POINTER Aluminum, Black painted window Flat plastic with steel friction ring RESTRICTOR Standard for all ranges MARSHALLTOWN VALUE SERIES GAUGE • ASME Grade B Accuracy • Extra Savings with Quantity Pricing • 5 Standard Mounting Options: LM, CB, UC, Right & Left Marshalltown Value Series are the most economical, general purpose gauges in the Marsh gauge line. Suited for use with water, oil, air, gas, or other non-corrosive media. Typical applications include FRL's, compressors,...

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STANDARD RANGES & PART NUMBERS

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F=Wrench Flats (Square) DIMENSIONS

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GENERAL SERVICE GAUGE • Dial Sizes: 112", 2", 212", 312" & 412" • 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. SPECIFICATIONS ACCURACY ASME Grade B-±3/2/3% (±2% of range across middle half of scale) CASE SIZES 112", 2",...

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