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Ashcroft (23)
Azel Technologies (2)
Bluefin (53)
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DiversiTech (10)
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Connection Size

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

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Back (151)
Bottom (220)
Flush (2)
Magnetic (2)
Panel (2)
Rotatable Bottom (21)
Surface (2)
Tee (3)
Top (11)
Wall (1)

Min Temp (F)

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

Max Pressure (PSI)

10 (1)
10000 (2)
5 (5)
15 (17)
30 (35)
50 (2)
55 (2)
60 (37)
75 (29)
100 (62)

Max Temp (F)

100°F (1)
1022°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 (C)

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

Max Temp (C)

115°C (17)
120°C (22)
121°C (1)
125°C (1)
135°C (4)
150°C (13)
160°C (20)
200°C (2)
260°C (3)
40°C (2)

Measures

Celsius (114)
Fahrenheit (151)
Pressure (364)
Temperature (1)
Vacuum (1)

Dial Size

1-1/2" (17)
2" (65)
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)

Review Score

(101)
(38)
(15)
(7)
(7)

Price Range

$1 to $5 (8)
$5 to $10 (36)
$10 to $15 (74)
$15 to $20 (28)
$20 to $25 (45)
$25 to $30 (44)
$30 to $35 (31)
$35 to $40 (24)
$40 to $45 (20)
$45 to $50 (22)

Boiler Temperature & Pressure Gauges

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Product Image of 2" Pressure Gauge, Bottom Mount (0-100 PSI)
2" Pressure Gauge, Bottom Mount (0-100 PSI)
SKU: GEP-100-BM
Bluefin
SKU: GEP-100-BM
Brand: Bluefin
(8)
$4.72 each
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Product Image of Water Test Gauge, 3/4" Hose Thread, Top Mount (0 - 200 PSI)
$8.05 each
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Product Image of 2.5" Tridicator, 1-9/16" Well, Back Mount Temperature & Pressure Gauge (0-75 PSI, 30-Degree to 250-Degree (F))
$15.30 each
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Product Image of 2.5" Hot Water Thermometer w/ 1/2" NPT Connection (32-Degree (F) to 250-Degree (F))
$10.92 each
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Product Image of 2" Economy Gas Test Pressure Gauge (0-100 PSI)
$10.86 each
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Product Image of 2.5" Stainless Steel Liquid Filled Gauge, Bottom Mount, w/ Brass Internals (0-100 PSI)
$10.82 each
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Product Image of 1/4" NPT, 2" Dial, Lower Mount No Lead Pressure Gauge (0-100 PSI)
$5.66 each
BOX UP & SAVE 13%
$49.10 box of 10
$4.91 each
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Product Image of 1/4" NPT, 3-1/8" Face, Temperature & Pressure Gauge (Tridicator), TD-090
$28.43 each
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Product Image of 2.5" Stainless Steel Liquid Filled Gauge, Bottom Mount, w/ Brass Internals - Lead Free (0-100 PSI)
$12.66 each
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Product Image of Gas Test Manifold Coupling w/ Pressure Gauge & Snifter Valve (0-30 PSI)
$9.81 each
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Product Image of 1/4" CBM PT 1088 Combination Temperature and Pressure Gauge (2" Shank, 1-5/8" Insert)
$24.72 each
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Product Image of 2.5" Economy Maximum Pointer Water Test Pressure Gauge, Top Mount (0-160 PSI)
$9.37 each
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Product Image of 2.5" Stainless Steel Liquid Filled Gauge, Bottom Mount, w/ Brass Internals (0-30 PSI)
$11.42 each
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Product Image of 2.5" Steel Low Pressure Gauge, Bottom Mount, w/ Brass Internals (0-5 PSI)
$21.33 each
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Product Image of Water Test Gauge, 3/4" Hose Thread
Water Test Gauge, 3/4" Hose Thread
SKU: PG25-WTG200MP
Boshart
SKU: PG25-WTG200MP
Brand: Boshart
(23)
$10.61 each
In Stock
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Product Image of 2-1/2" Dial Stainless Steel Pressure Gauge w/ Bottom Mount
$28.20 each
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Product Image of 2.5" Steel Low Pressure Gauge, Bottom Mount w/ Brass Internals (0-32" WC)
$21.33 each
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Product Image of 2" Economy Gas Test Pressure Gauge (0-30 PSI)
$10.32 each
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Product Image of 2" Dual Scale Economy Pressure Gauge, Bottom Mount (0-30 PSI)
$5.44 each
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Product Image of LFDPG1 2-1/2" Pressure Gauge - Lead Free (0-100 psi)
$26.68 each
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Product Image of 2.5" Stainless Steel Liquid Filled Gauge, Bottom Mount, w/ Brass Internals (0-200 PSI)
$12.02 each
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Product Image of 1/2" NPT, 3" Face, Temperature & Pressure Gauge - Short (Tridicator)
1/2" NPT, 3" Face, Temperature & Pressure Gauge - Short (Tridicator)
SKU: TR30-CB2S-60/250
Boshart
SKU: TR30-CB2S-60/250
Brand: Boshart
(5)
$23.54 each
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Product Image of 1/2" NPT, 3-1/8" Face, Temperature & Pressure Gauge (Tridicator), TDV-040
$39.19 each
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Product Image of 2.5" Stainless Steel Liquid Filled Gauge, Bottom Mount, w/ Brass Internals (0-60 PSI)
$10.82 each
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Product Image of 2.5" Tridicator, 3-3/8" Well, Back Mount Temperature & Pressure Gauge (0-75 PSI, 30 to 250-Degree (F))
$15.54 each
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Product Image of 3/4" Leak Test Gauge (0-30 PSI)
$19.73 each
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Product Image of 2" Economy Gas Test Pressure Gauge (0-15 PSI)
$10.33 each
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Product Image of 1-1/2" Back Port Gauge, 0-3000psi
$10.90 each
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Product Image of 2-1/2" Liquid Filled Pressure Gauge w/ Lower Mount (0-100 psi)
$15.12 each
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Product Image of 2" Dial Stainless Steel Pressure Gauge - Lower Mounted (0-100 PSI)
$21.78 each
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Product Image of LFDPTG-1 3" Bottom Entry Pressure & Temperature Gauge (0-200 psi)
$107.14 each
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Product Image of 1/2" NPT Connection Thermometer w/ 2-1/2" Dial Size, GT162
$21.61 each
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Product Image of 2.5" Stainless Steel Liquid Filled Gauge, Back Mount, w/ Brass Internals (0-100 PSI)
$12.45 each
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Product Image of 2.5" Stainless Steel Liquid Filled Gauge, Bottom Mount, w/ Brass Internals (0-300 PSI)
$12.02 each
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Product Image of 1/2" Leak Test Gauge (0-30 PSI)
1/2" Leak Test Gauge (0-30 PSI)
SKU: TG-30-12
DiversiTech
SKU: TG-30-12
Brand: DiversiTech
$15.25 each
In Stock
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Product Image of 1/4" NPT, 3-1/8" Face, Long Probe Temperature & Pressure Gauge (Tridicator), TD-165
$28.77 each
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Product Image of 2" Pressure Gauge, Back Mount (0-100 PSI)
2" Pressure Gauge, Back Mount (0-100 PSI)
SKU: GEP-100-BK
Bluefin
SKU: GEP-100-BK
Brand: Bluefin
(1)
$5.20 each
In Stock
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Product Image of 2.5" Stainless Steel Liquid Filled Gauge, Bottom Mount, w/ Brass Internals (0-160 PSI)
$12.02 each
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Product Image of 2.5" Snap Well Thermometer w/ 1/2" NPT Connection, Stainless Steel Well (32-Degree (F) to 250-Degree (F))
$11.13 each
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Product Image of 5" Straight Thermometer with Thermowell (30-Degree (F) to 240-Degree (F))
$25.46 each
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Product Image of 2" Dual Scale Economy Pressure Gauge, Bottom Mount (0-15 PSI)
$5.14 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-LM2-60/250
Boshart
SKU: TR30-LM2-60/250
Brand: Boshart
(3)
$29.88 each
In Stock
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Product Image of 2" Dual Scale Economy Pressure Gauge, Bottom Mount (0-200 PSI)
$5.44 each
Backorder
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Product Image of Water Test Gauge, 3/4" Hose Thread, Top Mount (0 - 300 PSI)
$7.75 each
In Stock
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Product Image of Gas Test Manifold Coupling w/ Pressure Gauge & Snifter Valve (0-15 PSI)
$10.57 each
In Stock
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Product Image of 2" PEM Dual Scale Economy Pressure Gauge (0-100 PSI)
$7.61 each
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Product Image of 3.5" Industrial Thermometer w/ Valox Case (30-Degree (F) to 240-Degree (F))
$49.83 each
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Product Image of LFDPTG-1 3" Bottom Entry Pressure & Temperature Gauge (0-75 psi)
LFDPTG-1 3" Bottom Entry Pressure & Temperature Gauge (0-75 psi)
SKU: 0121664
Watts
SKU: 0121664
Brand: Watts
(1)
$49.67 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.