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Temperature & Pressure Gauges

  • 2-1/2" SS Liquid Filled Gauge, 1/4" NPT w/ Brass Internals (0-160 PSI) Product Image
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    2-1/2" SS Liquid Filled Gauge, 1/4" NPT w/ Brass Internals (0-160 PSI) GSS25-160-DS 2-1/2" SS Liquid Filled Gauge, 1/4" NPT w/ Brass Internals (0-160 PSI)
    SKU: GSS25-160-DS
    Brand: Bluefin
    $7.59 each
    41
    Fri, Oct 25
    41
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    41 Fri, Oct 25
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  • 2.5" Tridicator w/ Ext. Back Temp. and Pressure (0-75 PSI and 70°F-320°F) Product Image
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    2.5" Tridicator w/ Ext. Back Temp. and Pressure (0-75 PSI and 70°F-320°F) TDA25-BKX 2.5" Tridicator w/ Ext. Back Temp. and Pressure (0-75 PSI and 70°F-320°F)
    SKU: TDA25-BKX
    Brand: Bluefin
    (1)
    $14.79 each
    115
    Fri, Oct 25
    115
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    115 Fri, Oct 25
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  • 1/2" Sweat Connection Thermometer w/ 2"<br>Dial Size Product Image
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    1/2" Sweat Connection Thermometer w/ 2" Dial Size TH2-250-50C 1/2" Sweat Connection Thermometer w/ 2" Dial Size
    SKU: TH2-250-50C
    Brand: Bluefin
    $3.95 each
    $13.00 box of 4
    $3.25 each
    39
    Fri, Oct 25
    39
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    39 Fri, Oct 25
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  • 2.5" Aluminum<br>Clamp-On Thermometer (30°F to 250°F) Product Image
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    2.5" Aluminum Clamp-On Thermometer (30°F to 250°F) TH25-250-CL 2.5" Aluminum Clamp-On Thermometer (30°F to 250°F)
    SKU: TH25-250-CL
    Brand: Bluefin
    $4.19 each
    278
    Fri, Oct 25
    278
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    278 Fri, Oct 25
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  • 2" PEM Dual Scale Economy Pressure Gauge (0-30 PSI) Product Image
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    2" PEM Dual Scale Economy Pressure Gauge (0-30 PSI) GEP2-30-DS 2" PEM Dual Scale Economy Pressure Gauge (0-30 PSI)
    SKU: GEP2-30-DS
    Brand: Bluefin
    $3.45 each
    159
    Fri, Oct 25
    159
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    159 Fri, Oct 25
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  • 2-1/2" SS Liquid Filled Gauge, 1/4" NPT w/ Brass Internals (0-300 PSI) Product Image
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    2-1/2" SS Liquid Filled Gauge, 1/4" NPT w/ Brass Internals (0-300 PSI) GSS25-300-DS 2-1/2" SS Liquid Filled Gauge, 1/4" NPT w/ Brass Internals (0-300 PSI)
    SKU: GSS25-300-DS
    Brand: Bluefin
    $7.59 each
    93
    Fri, Oct 25
    93
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    93 Fri, Oct 25
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  • 1/4" NPT, 2" Dial, Lower Mount No Lead Pressure Gauge (0-100 PSI) Product Image
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    1/4" NPT, 2" Dial, Lower Mount No Lead Pressure Gauge (0-100 PSI) GEP2-100-BM 1/4" NPT, 2" Dial, Lower Mount No Lead Pressure Gauge (0-100 PSI)
    SKU: GEP2-100-BM
    Brand: Bluefin
    (2)
    $3.45 each
    $28.50 box of 10
    $2.85 each
    2,030
    Fri, Oct 25
    2,030
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    2,030 Fri, Oct 25
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  • 1/4" NPT, 3-1/8" Face Long Probe Temp & Tridicator Product Image
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    1/4" NPT, 3-1/8" Face Long Probe Temp & Tridicator TD3C-BKX 1/4" NPT, 3-1/8" Face Long Probe Temp & Tridicator
    SKU: TD3C-BKX
    Brand: Bluefin
    $12.79 each
    $42.76 box of 4
    $10.69 each
    209
    Fri, Oct 25
    209
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    209 Fri, Oct 25
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  • 2.5" Back Mount Tridicator (0-75 PSI and 70°F-320°F) Product Image
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    2.5" Back Mount Tridicator (0-75 PSI and 70°F-320°F) TDA25-BM 2.5" Back Mount Tridicator (0-75 PSI and 70°F-320°F)
    SKU: TDA25-BM
    Brand: Bluefin
    $14.69 each
    180
    Fri, Oct 25
    180
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    180 Fri, Oct 25
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  • 1/4" NPT, 2.5" Face, Temp & Press. Gauge (Tridicator) Product Image
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    1/4" NPT, 2.5" Face, Temp & Press. Gauge (Tridicator) TD25B-BK 1/4" NPT, 2.5" Face, Temp & Press. Gauge (Tridicator)
    SKU: TD25B-BK
    Brand: Bluefin
    (3)
    $10.59 each
    $43.95 box of 5
    $8.79 each
    1,720
    Fri, Oct 25
    1,720
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    1,720 Fri, Oct 25
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  • 2-1/2" SS Liquid Filled Gauge, 1/4" NPT w/ Brass Internals (0-100 PSI) Product Image
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    2-1/2" SS Liquid Filled Gauge, 1/4" NPT w/ Brass Internals (0-100 PSI) GSS25-100-DS 2-1/2" SS Liquid Filled Gauge, 1/4" NPT w/ Brass Internals (0-100 PSI)
    SKU: GSS25-100-DS
    Brand: Bluefin
    (2)
    $7.59 each
    55
    Fri, Oct 25
    55
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    55 Fri, Oct 25
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  • 2-1/2" TSW Dial Type Therm w/ 3/4" Sweatwell 30°F -250°F & 0°C -120°C Product Image
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    2-1/2" TSW Dial Type Therm w/ 3/4" Sweatwell 30°F -250°F & 0°C -120°C TH25-250-75C 2-1/2" TSW Dial Type Therm w/ 3/4" Sweatwell 30°F -250°F & 0°C -120°C
    SKU: TH25-250-75C
    Brand: Bluefin
    $8.59 each
    185
    Fri, Oct 25
    185
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    185 Fri, Oct 25
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  • 2" Dial Pressure Gauge - Center Back Mounted<br>(0-100 PSI Range) Product Image
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    2" Dial Pressure Gauge - Center Back Mounted (0-100 PSI Range) GEP2-100-BK 2" Dial Pressure Gauge - Center Back Mounted (0-100 PSI Range)
    SKU: GEP2-100-BK
    Brand: Bluefin
    $3.65 each
    219
    Fri, Oct 25
    219
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    219 Fri, Oct 25
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  • 1/2" NPT, 2.5" Face, Snap Well Thermometer <br>(Stainless Steel) Product Image
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    1/2" NPT, 2.5" Face, Snap Well Thermometer (Stainless Steel) TH25-250-50SST 1/2" NPT, 2.5" Face, Snap Well Thermometer (Stainless Steel)
    SKU: TH25-250-50SST
    Brand: Bluefin
    $4.35 each
    $18.25 box of 5
    $3.65 each
    2
    Fri, Oct 25
    2
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    2 Fri, Oct 25
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  • Water Test Gauge<br>3/4" Hose Thread Product Image
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    Water Test Gauge 3/4" Hose Thread GW25-200 Water Test Gauge 3/4" Hose Thread
    SKU: GW25-200
    Brand: Bluefin
    (1)
    $4.65 each
    $19.75 box of 5
    $3.95 each
    1,932
    Fri, Oct 25
    1,932
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    1,932 Fri, Oct 25
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  • 4.5" Contractor Pressure Gauge (0-100 PSI) Product Image
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    4.5" Contractor Pressure Gauge (0-100 PSI) GCP45-100 4.5" Contractor Pressure Gauge (0-100 PSI)
    SKU: GCP45-100
    Brand: Bluefin
    $11.39 each
    117
    Fri, Oct 25
    117
    QtyArrives
    117 Fri, Oct 25
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  • 1/2" NPT Connection Thermometer<br>w/ 2-1/2" Dial Size Product Image
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    1/2" NPT Connection Thermometer w/ 2-1/2" Dial Size TH25-250-50T 1/2" NPT Connection Thermometer w/ 2-1/2" Dial Size
    SKU: TH25-250-50T
    Brand: Bluefin
    (1)
    $5.45 each
    $45.90 box of 10
    $4.59 each
    1,264
    Fri, Oct 25
    1,264
    QtyArrives
    1,264 Fri, Oct 25
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  • 2" PEM Dual Scale Economy Pressure Gauge (0-60 PSI) Product Image
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    2" PEM Dual Scale Economy Pressure Gauge (0-60 PSI) GEP2-60-DS 2" PEM Dual Scale Economy Pressure Gauge (0-60 PSI)
    SKU: GEP2-60-DS
    Brand: Bluefin
    $3.45 each
    663
    Fri, Oct 25
    663
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    663 Fri, Oct 25
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  • 3" TTD Bottom Mount Dual Scale Tridicator (0-75 PSI and 70°F-320°F) Product Image
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    3" TTD Bottom Mount Dual Scale Tridicator (0-75 PSI and 70°F-320°F) TDA3-BM 3" TTD Bottom Mount Dual Scale Tridicator (0-75 PSI and 70°F-320°F)
    SKU: TDA3-BM
    Brand: Bluefin
    $20.69 each
    1
    Fri, Oct 25
    1
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    1 Fri, Oct 25
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  • 1/4" NPT, 3-1/8" Face<br>Temp & Pressure Gauge (Tridicator) Product Image
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    1/4" NPT, 3-1/8" Face Temp & Pressure Gauge (Tridicator) TD3C-BK 1/4" NPT, 3-1/8" Face Temp & Pressure Gauge (Tridicator)
    SKU: TD3C-BK
    Brand: Bluefin
    (1)
    $11.59 each
    $38.76 box of 4
    $9.69 each
    337
    Fri, Oct 25
    337
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    337 Fri, Oct 25
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  • 2" PEM Dual Scale Economy Pressure Gauge (0-100 PSI) Product Image
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    2" PEM Dual Scale Economy Pressure Gauge (0-100 PSI) GEP2-100-DS 2" PEM Dual Scale Economy Pressure Gauge (0-100 PSI)
    SKU: GEP2-100-DS
    Brand: Bluefin
    $3.45 each
    149
    Fri, Oct 25
    149
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    149 Fri, Oct 25
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  • Water Test Gauge <br> 3/4" Hose Thread (0 - 300 PSI) Product Image
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    Water Test Gauge 3/4" Hose Thread (0 - 300 PSI) GW25-300 Water Test Gauge 3/4" Hose Thread (0 - 300 PSI)
    SKU: GW25-300
    Brand: Bluefin
    (1)
    $4.65 each
    $19.75 box of 5
    $3.95 each
    261
    Fri, Oct 25
    261
    QtyArrives
    261 Fri, Oct 25
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  • 4.5" PCT Contractor Pressure Gauge<br>(0-160 PSI) Product Image
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    4.5" PCT Contractor Pressure Gauge (0-160 PSI) GCP45-160 4.5" PCT Contractor Pressure Gauge (0-160 PSI)
    SKU: GCP45-160
    Brand: Bluefin
    $11.39 each
    154
    Fri, Oct 25
    154
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    154 Fri, Oct 25
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  • 3" TTD Back Mount Dual Scale Tridicator (0-75 PSI and 70°F-320°F) Product Image
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    3" TTD Back Mount Dual Scale Tridicator (0-75 PSI and 70°F-320°F) TDA3-BK 3" TTD Back Mount Dual Scale Tridicator (0-75 PSI and 70°F-320°F)
    SKU: TDA3-BK
    Brand: Bluefin
    $14.99 each
    212
    Fri, Oct 25
    212
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    212 Fri, Oct 25
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Resources

Articles

  • 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.
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