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Apollo Valves (1)
Ashcroft (23)
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Dwyer (72)
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Measures
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Celsius (114)
Fahrenheit (150)
Pressure (364)
Temperature (1)
Vacuum (1)

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Back (151)
Bottom (220)
Flush (2)
Magnetic (2)
Panel (2)
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Surface (2)
Tee (2)
Top (11)
Wall (1)

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1-1/2" (17)
2" (64)
2-1/2" (157)
3" (50)
3-1/8" (6)
3-1/4" (2)
3-1/2" (13)
4" (74)
4-1/2" (19)
6" (1)

Connection Size
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1/8" (3)
1/4" (48)
1/2" (69)
3/4" (50)
1" (1)

Max Pressure (PSI)
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5 (5)
10 (1)
15 (17)
30 (35)
50 (2)
55 (2)
60 (37)
75 (29)
100 (62)
150 (3)

Max Temp (F)
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60°F (1)
100°F (1)
110°F (2)
120°F (6)
130°F (2)
140°F (27)
150°F (2)
158°F (1)
160°F (1)
176°F (14)

Min Temp (F)
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-60°F (1)
-58°F (1)
-50°F (1)
-40°F (11)
-22°F (1)
-4°F (17)
0°F (25)
20°F (35)
30°F (37)
32°F (16)

Max Temp (C)
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40°C (2)
50°C (7)
60°C (3)
66°C (1)
70°C (6)
80°C (4)
90°C (4)
95°C (4)
115°C (17)
120°C (22)

Min Temp (C)
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-50°C (2)
-45°C (1)
-40°C (9)
-30°C (1)
-20°C (20)
-18°C (2)
-15°C (7)
-10°C (1)
-5°C (6)
0°C (34)

Review Score
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(102)
(36)
(16)
(7)
(7)

Price Range
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$1 to $5 (9)
$5 to $10 (38)
$10 to $15 (72)
$15 to $20 (29)
$20 to $25 (44)
$25 to $30 (49)
$30 to $35 (29)
$35 to $40 (24)
$40 to $45 (19)
$45 to $50 (18)

Boiler Temperature & Pressure Gauges

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Product Image of 3/4 NPT Brass Thermowell with 6" Stem, 2-1/2" Insertion
$23.11 each
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Product Image of 2-1/2" Stainless Steel Liquid Filled Gauge, 1/4" Bottom NPT w/ Brass Internals (30" Hg Vac/kPa)
$37.21 each
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Product Image of 4" 1008AL Stainless Steel Case Pressure Gauge (Liquid Filled)
4" 1008AL Stainless Steel Case Pressure Gauge (Liquid Filled)
SKU: 1001008AL02L-0/160
Ashcroft
SKU: 1001008AL02L-0/160
Brand: Ashcroft
$121.41 each
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Product Image of 2" PEM Dual Scale Economy Pressure Gauge (0-200 PSI)
$12.53 each
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Product Image of Pressure & Temperature Gauge, 20-1014
$197.74 each
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Product Image of 2-1/2" Stainless Steel Dual Scale Liquid Filled Gauge, 1/4" Back (0-400 PSI)
$30.12 each
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Product Image of 4" Stainless Steel Liquid Filled Pressure Gauge (0-160 PSI)
$94.02 each
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Product Image of LFDPG1 2-1/2" Pressure Gauge (0-300 psi)
LFDPG1 2-1/2" Pressure Gauge (0-300 psi)
SKU: 0121643
Watts
SKU: 0121643
Brand: Watts
$25.86 each
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Product Image of 2-1/2" PEM Dual Scale Economy Pressure Gauge (0-60 PSI)
$10.65 each
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Product Image of 5" 5AS Straight Thermometer with Thermowell, Lead Free (30°F to 240°F & 0°C to 115°C)
$80.73 each
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Product Image of 1/2" NPT Connection Thermometer w/ 2" Dial Size, GT161
$28.84 each
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Product Image of 2-1/2" Stainless Steel Liquid Filled Gauge, 1/4" Back NPT w/ Brass Internals (0-30 PSI)
$37.21 each
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Product Image of 2-1/2" PEM Dual Scale Economy Pressure Gauge (0-30"Hg Vacuum/kpa)
$14.74 each
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Product Image of Magnehelic Differential Pressure Gage (.25" - 0" - .25" W.C.)
$112.02 each
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Product Image of 2-1/2" PEM Dual Scale Economy Pressure Gauge (0-15 PSI)
$10.88 each
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Product Image of 2" PEM Dual Scale Economy Pressure Gauge (0-300 PSI)
$12.53 each
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Product Image of 3/4" TBR Brass Bi-Metal Threaded Thermowell w/ 2-1/2" Stem
$27.81 each
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Product Image of 4" 1008AL Stainless Steel Case Pressure Gauge (Liquid Filled)
4" 1008AL Stainless Steel Case Pressure Gauge (Liquid Filled)
SKU: 1001008AL02L-0/60
Ashcroft
SKU: 1001008AL02L-0/60
Brand: Ashcroft
$121.41 each
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Product Image of 3-1/2" TBT Bi-Metal Bottom Mount Thermometer (30°F to 250°F & 0°C to 121°C)
$106.49 each
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Product Image of Magnehelic Differential Pressure Gage (0 - 8.0" W.C.)
$107.88 each
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Product Image of 4" Stainless Steel Dual Scale Liquid Filled Gauge, 1/4" Bottom (30"Hg-0-30 PSI)
$94.15 each
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Product Image of 1/2" NPT Brass Test Plug w/ Retainer, Nordel (EPDM) Core
$9.33 each
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Product Image of 2-1/2" Stainless Steel Liquid Filled Gauge, 1/4" Bottom NPT w/ Brass Internals (0-3000 PSI)
$27.79 each
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Product Image of 2-1/2" Stainless Steel Liquid Filled Gauge, 1/4" Back NPT w/ Brass Internals (0-200 PSI)
$37.74 each
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Product Image of 2-1/2" PLP Steel Low Pressure Gauge, 1/4" Bottom NPT w/ Brass Internals (0-55"WC)
$76.74 each
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Product Image of Gas Tester Complete w/ 1/8" NPT Air Valve
$13.40 each
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Product Image of D83LFSS, 1/4" NPT, 2-1/2" Dial, Industrial Pressure Gauge with CBM (0-200 PSI)
$56.80 each
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Product Image of 2-1/2" Stainless Steel Liquid Filled Gauge, 1/4" Back NPT w/ Brass Internals (0-600 PSI)
$30.12 each
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Product Image of BX9, 9" Scale, 6" Adjustable Angle Industrial Thermometer (30-Degree (F) to 240-Degree (F))
$65.40 each
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Product Image of 2-1/2" Stainless Steel Liquid Filled Gauge, 1/4" Back NPT w/ Brass Internals (0-60 PSI)
$35.20 each
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Product Image of 15 lb. Gas Test Gauge Assembly
$124.87 each
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Product Image of 2-1/2" Stainless Steel Liquid Filled Gauge, 1/4" Bottom NPT w/ Brass Internals (0-600 PSI)
$23.04 each
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Product Image of 1/2" Sweat Connection Thermometers w/ 2-1/2" Dial Size, GS250
$30.44 each
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Product Image of 2-1/2" PLP Steel Low Pressure Gauge, 1/4" Bottom NPT w/ Brass Internals (0-100"WC)
$62.50 each
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Product Image of 4" Stainless Steel Dual Scale Liquid Filled Gauge, 1/4" Bottom (0-60 PSI)
$87.94 each
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Product Image of Replacement Hose Set with End Fittings for T11
$21.24 each
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Product Image of LFDPG5 2" Pressure Gauge, 1/4" MNPT Inlet, Lead Free (0-160 psi)
$40.68 each
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Product Image of 2" Lower Mount Pressure Gauge, ABS Brass Dry (0-60 psi)
$4.59 each
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Product Image of 760B, 2.5" Low Pressure Diaphragm Gauge
760B, 2.5" Low Pressure Diaphragm Gauge
SKU: 760B2502LT660
Trerice
SKU: 760B2502LT660
Brand: Trerice
$52.14 each
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Product Image of 3-1/4" W-R Tridicator
3-1/4" W-R Tridicator
SKU: 1711011
Wal-rich
SKU: 1711011
Brand: Wal-rich
$42.42 each
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Product Image of LPG4 Low Pressure Gage, Bottom Mount 1.5% FS Accuracy (0 - 15" W.C.)
$115.19 each
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Product Image of 2" PEM Dual Scale Economy Pressure Gauge (0-160 PSI)
$12.22 each
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Product Image of BX9, 9" Scale, 3-1/2" Adjustable Angle Brass Industrial Thermometer (30-Degree (F) to 240-Degree (F))
$179.87 each
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Product Image of 3/4 NPT Stainless Steel Thermowell with 3-1/2" Stem, 1-7/10" Insertion
$102.49 each
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Product Image of 2" TSW Dial Hot Water Thermometer, Lead Free (30°F to 250°F & 0°C to 120°C)
$42.86 each
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Product Image of 3" TTD Bottom Mount Dual Scale Tridicator (0-75 PSI and 70°F-320°F)
$88.80 each
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Product Image of 1/4" NPT Stainless Steel Pressure Snubber for Water, Steam, Gasoline & Light Oils (Lead Free)
$47.30 each
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Product Image of 2.5" 1005 Steel Pressure Gauge (with PowerFlex Movement)
2.5" 1005 Steel Pressure Gauge (with PowerFlex Movement)
SKU: 25W1005H02L-0/60
Ashcroft
SKU: 25W1005H02L-0/60
Brand: Ashcroft
(1)
$31.40 each
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Resources
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Articles
More About Temperature & Pressure Gauges
Temperature and pressure gauges are used to measure the temperature and pressure of a gas or liquid in a system. Stainless steel is the most common material used for these gauges, followed by brass. Gauges are available in either dry or liquid filled models. A liquid filled gauge has a long lifespan because it has fewer moving parts and the thick oil which fills it leaves no room for humid ambient air to enter. Water cannot condense and accumulate in a liquid filled gauge, as it can in a dry gauge.

Some gauges contain illuminated dials and digital readouts for better visibility. A gauge with temperature compensation has the ability to correct any ambient temperature variation. Differential gauges allow for differential pressures, and duplex gauges indicate dual pressures on a single dial. Tridicators are common pressure gauges that measure temperature, pressure, and altitude. Snap Well thermometers measure the ambient temperature of a desired location.