Marsh 40MM SEVERE SERVICE GAUGE, 50MM SEVERE SERVICE GAUGE Catalog Page
Severe Service
SPECIFICATIONS
ACCURACY
±2.5% of range across full scale
CASE SIZES
40 or 50 mm diameter
CASE MATERIAL
304 Stainless Steel
CASE STYLE
CB – Center Back mount
TUBE & SOCKET
Copper Alloy tube
with nickel plated brass socket
MOVEMENT
Brass
CONNECTION
1
⁄8 NPT & 1⁄4 NPT
RANGES
15 to 160 psi
DIAL STANDARD
Triple scale psi/BAR/kPa
DIAL COLOR
Black markings on white
POINTER
Aluminum, black painted
WINDOW
Acrylic
FILL MEDIUM
Glycerine Standard
RESTRICTOR
Standard, all ranges
VENT PLUG
Filler/pressure relief plug
TEMPERATURE LIMITS
0 – 140º F (filled)
WEIGHT
40mm 0.5 lb.
50mm 0.5 lb.
40MM & 50MM SEVERE SERVICE GAUGE
• Copper Alloy Internals
• Glycerine Filled
• Center Back Mount Only
Marsh Instruments Liquid-Filled Gauges are designed to perform in rugged and harsh environmental conditions - espe-
cially where pulsation and vibration is a problem. Liquid Filled Gauges offer a significant cushioning and dampening
effect, reducing pointer flutter and internal gauge damage. Liquid Filled Gauges feature a ventable top fill plug and
can be mounted on a horizontal or vertical plane. The hermetically sealed construction reduces the chance of leaks
and makes field filling an easy option.
Typical applications include refineries, chemical, oil & gas, marine and OEM processes.
STANDARD RANGES & PART NUMBERS
TYPE 40MM & 50MM GAUGES
Size 40mm 50mm
Case Material 304 Stainless Steel 304 Stainless Steel
Internals Copper Alloy Copper Alloy
Mounting / Case Style CB CB
Connection
Scale Standard psi/BAR/kPa psi/BAR/kPa
0 to 15 psi M4040P M5040P
0 to 30 psi M4042P M5042P
0 to 60 psi M4046P M5046P
0 to 100 psi M4048P M5048P
0 to 160 psi M4052P M5052P
40MM AND 50MM GAUGE OPTIONS
OPTION TYPE SUFFIX AVAILABLE ON MODELS
Custom Dials Custom face M See Marsh Price List for minimums
Other Ranges Consult factory for availability
Fill Medium Silicone (SL) I Consult factory
ALL DIMENSIONS ARE NOMINAL
1
⁄8 NPT
1
⁄4 NPT
A-Size B C E
40mm Dia
50mm Dia
27.00mm
1.06"
30.00mm
1.18"
11.5mm
0.45"
11.5mm
0.45"
13.00mm
0.51"
10.00mm
0.39"
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63MM SEVERE SERVICE GAUGE
• 3 Standard Mounting Options: LM, CB and U-Clamp
• Glycerine Filled
• Ranges to 10,000 psi
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.
STANDARD RANGES & PART NUMBERS
TYPE 63MM SEVERE SERVICE GAUGES
Size 63mm 63mm
Case Material 304 Stainless Steel 304 Stainless Steel
Internals Copper Alloy Stainless Steel
Mounting / Case Style LM UC CB LM UC CB
Connection
Scale Standard psi/kPa psi/kPa
0 to 30" Hg VAC J7605P J7205P J6405P J7805P J7405P J6605P
30" Hg VAC to 15 psi
30" Hg VAC to 30 psi J7612P
30" Hg VAC to 60 psi J7614P
30"Hg VAC to 100 psi
30" Hg VAC to 150 psi J7618P J7218P J6418P J7818P J7418P J6618P
30" Hg VAC to 200 psi J7620P J7220P J6420P J7820P J7420P J6620P
30" Hg VAC to 300 psi J7624P J7224P J6424P J7824P J7424P J6624P
30" Hg VAC to 400 psi J7626P J7226P J6426P J7826P J7426P J6626P
0 to 15 psi J7640P J7240P J6440P J7840P J7440P J6640P
0 to 30 psi J7642P J7242P J6442P J7842P J7442P J6642P
0 to 60 psi J7646P J7246P J6446P J7846P J7446P J6646P
0 to 100 psi J7648P J7248P J6448P J7848P J7448P J6648P
0 to 160 psi J7652P J7252P J6452P J7852P J7452P J6652P
0 to 200 psi J7654P J7254P J6454P J7854P J7454P J6654P
0 to 300 psi J7658P J7258P J6458P J7858P J7458P J6658P
0 to 400 psi J7660P J7260P J6460P J7860P J7460P J6660P
0 to 600 psi J7664P J7264P J6464P J7864P J7464P J6664P
0 to 1,000 psi J7672P J7272P J6472P J7872P J7472P J6672P
0 to 1,500 psi J7674P J7274P J6474P J7874P J7474P J6674P
0 to 2,000 psi J7676P J7276P J6476P J7876P J7476P J6676P
0 to 3,000 psi J7678P J7278P J6478P J7878P J7478P J6678P
0 to 5,000 psi J7682P J7282P J6482P J7882P J7482P J6682P
0 to 6,000 psi J7684P J7284P J6484P J7884P J7484P J6684P
0 to 10,000 psi J7890P J7490P J6690P
NOTE:
Items are available on special order. However, minimums and lead times apply. Consult factory.
1
⁄4 NPT
1
⁄4 NPT
1
⁄4 NPT
1
⁄4 NPT
1
⁄4 NPT
1
⁄4 NPT
Severe Service
SPECIFICATIONS
ACCURACY
ASME Grade B – ±3/2/3% (±2% of
range across middle half of scale)
CASE SIZES
63mm (2.47") diameter
CASE MATERIAL
304 Stainless Steel
CASE STYLE
Rolled ring, hermetically sealed case
CB – Center Back Mount
LM – Lower Mount
UC – U-Clamp Mount
TUBE & SOCKET
Copper alloy or 316 stainless steel
MOVEMENT
Brass
CONNECTION
1
⁄4 NPT
RANGES
0 to 30" Hg VAC; Compound 30"
Hg to 400 psi; 15 to 10,000 psi
DIAL STANDARD
Dual scale psi and kPa
DIAL COLOR
Black markings on white
POINTER
Aluminum, black painted
WINDOW
Polycarbonate
FILL MEDIUM
Glycerine Standard
RESTRICTOR
Standard for all ranges
VENT PLUG
Rubber plug with snip-off feature
WEIGHT
Filled 1.0 lb.
Dry 0.7 lb.
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