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Apollo Valves (1)
Ashcroft (23)
Azel Technologies (2)
Bluefin (53)
Boshart (29)
Burnham (1)
Caleffi (4)
DiversiTech (10)
Dwyer (72)
Hilmor Tools (2)

Measures

Celsius (114)
Fahrenheit (150)
Pressure (364)
Temperature (1)
Vacuum (1)

Mount

Back (151)
Bottom (220)
Flush (2)
Magnetic (2)
Panel (2)
Rotatable Bottom (21)
Surface (2)
Tee (2)
Top (11)
Wall (1)

Dial Size

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

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

Max Pressure (PSI)

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

Max Temp (F)

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)

-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)

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)

-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

(101)
(37)
(15)
(7)
(7)

Price Range

$1 to $5 (8)
$5 to $10 (38)
$10 to $15 (73)
$15 to $20 (29)
$20 to $25 (45)
$25 to $30 (46)
$30 to $35 (32)
$35 to $40 (22)
$40 to $45 (20)
$45 to $50 (18)

Boiler Temperature & Pressure Gauges

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Product Image of Gas Test Gauge Assembly (100 psi)
$17.91 each
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Product Image of 2-1/2" Stainless Steel Liquid Filled Gauge, 1/4" Bottom NPT w/ Brass Internals - Lead Free (0-100 PSI)
$45.82 each
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Product Image of 3-1/2" TSD Industrial Solar Digital Thermometer (-50°F to 320°F & -45°C to 160°C)
$140.19 each
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Product Image of 2" PEM Dual Scale Economy Pressure Gauge (0-30 PSI)
$9.57 each
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Product Image of 3/4 NPT Brass Thermowell with 3-1/2" Stem, 2-1/2" Insertion
$14.16 each
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Product Image of 3" TTD Back Mount Dual Scale Tridicator (0-250 PSI and 70°F-320°F)
$38.05 each
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Product Image of D82LFB, 1/4" NPT, 4" Dial, Industrial Pressure Gauge with Lower Mount (0-100 PSI)
$61.99 each
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Product Image of Universal Sensor Probe (10,000 Ohm)
$13.08 each
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Product Image of 2-1/2" PEM Dual Scale Economy Pressure Gauge (0-200 PSI)
$11.17 each
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Product Image of 2-1/2" Stainless Steel Liquid Filled Gauge, 1/4" Back NPT w/ Brass Internals (0-100 PSI)
$30.12 each
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Product Image of 3-1/2" TIM Industrial 9IT Thermometer w/ Valox Case (0°F to 160°F & -15°C to 70°C)
$68.17 each
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Product Image of 2.5" Thermometer w/ 1/2" Sweat Connection (32-Degree (F) to 250-Degree (F))
$9.62 each
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Product Image of 75 PSI, 260 F Boiler Gauge - Bottom Mount
$33.66 each
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Product Image of 2-1/2" PLP Steel Low Pressure Gauge, 1/4" Bottom NPT w/ Brass Internals (0-5 PSI)
$61.20 each
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Product Image of 3" Bottom Mount Dual Scale Tridicator (0-75 PSI, 70-Degree to 320-Degree (F))
$32.54 each
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Product Image of AX9, 3-1/2" Industrial Thermometer with Aluminum Case (30-Degree (F) to 240-Degree (F))
$56.43 each
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Product Image of 2" PET Economy Gas Test Pressure Gauge (0-30 PSI)
$13.25 each
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Product Image of 1/2" NPT STP Brass Test Plug (-40°F to 302°F & -40°C to 150°C)
$9.14 each
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Product Image of 4.5" Contractor Pressure Gauge (0-100 PSI)
$34.04 each
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Product Image of 3" TTD Back Mount Dual Scale Tridicator (0-75 PSI and 70°F-320°F)
$49.93 each
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Product Image of 1/2" NPT, 3" Face, Temperature & Pressure Gauge (Tridicator)
1/2" NPT, 3" Face, Temperature & Pressure Gauge (Tridicator)
SKU: TR30-CB2-60/250
Boshart
SKU: TR30-CB2-60/250
Brand: Boshart
(6)
$25.92 each
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Product Image of 2.5" Steel Low Pressure Gauge (0-15" Water/OZ)
$62.50 each
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Product Image of BX9, 9" Scale, 3-1/2" Adjustable Angle Industrial Thermometer (0-Degree (F) to 100-Degree (F))
$56.43 each
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Product Image of 4" PEM Dual Scale Economy Pressure Gauge (0-100 PSI)
$31.59 each
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Product Image of D82LFB, 1/4" NPT, 2-1/2" Dial, Industrial Pressure Gauge with Lower Mount (0-200 PSI)
$23.47 each
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Product Image of 3" TTD Back Mount Dual Scale Tridicator (0-200 PSI and 70°F-320°F)
$58.53 each
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Product Image of 2-1/2" PLP Steel Low Pressure Gauge, 1/4" Bottom NPT w/ Brass Internals (0-32"WC)
$61.20 each
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Product Image of E-Z Trialtimeter, 1/4" NPT Short Shank Boiler Gauge (0-61 PSI, 30-Degree -250-Degree (F))
$26.87 each
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Product Image of 2-1/2" Stainless Steel Liquid Filled Gauge, 1/4" Bottom NPT w/ Brass Internals (0-200 PSI)
$24.22 each
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Product Image of 2.5" Hot Water Thermometer (30°F to 250°F)
$24.02 each
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Product Image of 3" Bottom Mount Dual Scale Tridicator (0-200 PSI, 70-Degree - 320-Degree (F))
$30.91 each
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Product Image of 75 PSI, 260 F Boiler Gauge - Back Mount
$42.10 each
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Product Image of 2" Lower Mount Pressure Gauge (0-60 psi)
$4.62 each
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Product Image of Gas Test Gauge Assembly (30 psi)
$17.91 each
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Product Image of 3.5" Lead Free Industrial 9IT Thermometer with Valox Case (30°F to 240°F)
$113.60 each
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Product Image of 2000 Series Differential Pressure Gauge (0 - 2" W.C.)
$84.45 each
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Product Image of Strap On Thermometer
Strap On Thermometer
SKU: 1722030
Wal-rich
SKU: 1722030
Brand: Wal-rich
$24.17 each
In Stock
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Product Image of 2.5" Hot Water Thermometer w/ 3/4" Sweat Well (32-Degree (F) to 250-Degree (F))
$9.82 each
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Product Image of 620B, 4-1/2" Pressure Gauge with Lower Mount (0-160 PSI)
$24.52 each
Out of Stock
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Product Image of 3/4" TIW Brass Industrial 9IT Thermowell w/ 2-1/2" Insertion Length
$20.77 each
In Stock
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Product Image of 1/8" MIP Air Tank Valve
1/8" MIP Air Tank Valve
SKU: 1838102
Wal-rich
SKU: 1838102
Brand: Wal-rich
$5.01 each
In Stock
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Product Image of 3/4" FHT 0-300 psi Lazy Hand Water Test Gauge
$13.37 each
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Product Image of 4.5" Contractor Pressure Gauge, Bottom Mount (0-160 PSI)
4.5" Contractor Pressure Gauge, Bottom Mount (0-160 PSI)
SKU: GCP-160-BM
Bluefin
SKU: GCP-160-BM
Brand: Bluefin
(2)
$21.08 each
In Stock
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Product Image of 1/4" NPT, 2.5" Face, Temperature & Pressure Gauge (Tridicator), 3-3/8" Well
$27.90 each
BOX UP & SAVE 14%
$119.55 box of 5
$23.91 each
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Product Image of 4.5" PCT Contractor Pressure Gauge (30"Hg-0-30 PSI)
$41.21 each
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Product Image of IWTG, 2-1/2" Hose Connection Gauge (0-200 psi)
$56.55 each
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Product Image of 2-1/2" PET Economy Water Test Pressure Gauge (0-160 PSI)
$14.54 each
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Product Image of BX9, 9" Scale, 3-1/2" Adjustable Angle Industrial Thermometer (0-Degree (F) to 160-Degree (F))
$56.43 each
In Stock
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Resources
FAQs, Manuals & Videos
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.