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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 (151)
Pressure (364)
Temperature (1)
Vacuum (1)

Mount

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

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)
(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 (45)
$30 to $35 (30)
$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)
$23.72 each
In Stock
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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
In Stock
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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
In Stock
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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 1/4" NPT Brass Pressure Snubber for Water, Steam, Gasoline & Light Oils (Lead Free)
1/4" NPT Brass Pressure Snubber for Water, Steam, Gasoline & Light Oils (Lead Free)
SKU: 872-2
Trerice
SKU: 872-2
Brand: Trerice
$9.49 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.