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Pressure & Vacuum - 369 - Blowout Sale! Save up to 61%


Blowout Sale! Up to 61% off on Pressure & Vacuum at In The National Interest. Top brands include gauge, Yellow Jacket Ritchie, Winters Instruments, Dwyer, Robinair, Emerson-Fisher LP-Gas Equipment, PneumaticPlus, Fluke, PIC Gauges, Square D by Schneider Electric, & LIQUID FILLED GAUGE. Hurry! Limited time offers. Offers valid only while supplies last.



NEW STAINLESS STEEL LIQUID FILLED PRESSURE GAUGE WOG WATER OIL GAS 0 to 100 PSI LOWER MOUNT 0-100 PSI 1/4'' NPT 2.5'' FACE DIAL FOR COMPRESSOR HYDRAULIC AIR TANK
NEW STAINLESS STEEL LIQUID FILLED PRESSURE GAUGE WOG WATER OIL GAS 0 to 100 PSI LOWER MOUNT 0-100 PSI 1/4" NPT 2.5" FACE DIAL FOR COMPRESSOR HYDRAULIC AIR TANK
By gauge
In Stock
$14.95

mpn: MI LFSL-2-100, ean: 0789474942039,

1.5% Span of accuracy This style liquid gauge can handle any application between -104 Degrees through 158 Degrees F Liquid/Glycerin Filled gauges enhance the reliability and integrity of the measuring systems for long periods. The Glycerin Filling he...


Yellow Jacket 78060 Complete Test Kit, 0-35'' W.C
Yellow Jacket 78060 Complete Test Kit, 0-35" W.C
By Yellow Jacket Ritchie
In Stock
$71.99
$48.95
You Save: 32%

mpn: 78060, ean: 6593856686640,

Easier to use than a manometer, this compact kit helps you accurately set manifold pressure for natural or L.P. Gas.Sensitive diaphragm gauge calibrated in inches of water column and ounces per square inch. Improved lamination strength of diaphragm (...


Winters PFQ Series Stainless Steel 304 Dual Scale Liquid Filled Pressure Gauge with Brass Internals, 0-300 psi/kpa,2-1/2'' Dial Display, +/-1.5% Accuracy, 1/4'' NPT Bottom Mount
Winters PFQ Series Stainless Steel 304 Dual Scale Liquid Filled Pressure Gauge with Brass Internals, 0-300 psi/kpa,2-1/2" Dial Display, +/-1.5% Accuracy, 1/4" NPT Bottom Mount
By Winters Instruments
In Stock
$21.27
$18.01
You Save: 15%

mpn: PFQ807, ean: 0628311211399,

The Winters PFQ series pressure gauge with brass wetted parts has a glycerin-filled circular dial enclosed in a stainless steel 304 case, and a male connection, and measures pressure with a single or dual scale with an accuracy of + or - 1.5% or 2.5%...


Dwyer 2005 Magnehelic Differential Pressure Gauge, Type, 0 to 5'' WC
Dwyer 2005 Magnehelic Differential Pressure Gauge, Type, 0 to 5" WC
By Dwyer
In Stock
$63.50
$57.80
You Save: 9%

mpn: 2005,

The magnahelic gauge is the industry standard to measure fan and blower pressures, filter resistance, air velocity, furnace draft, pressure drop across orifice plates, liquid levels with bubbler systems, and pressures in fluid amplifier or fluidic sy...


Dwyer Magnehelic Series 2000 Differential Pressure Gauge, Range 0-10''WC & 0-12500 fpm
Dwyer Magnehelic Series 2000 Differential Pressure Gauge, Range 0-10"WC & 0-12500 fpm
By Dwyer
In Stock
$67.95
$57.80
You Save: 15%

mpn: 2010AV, ean: 0094700981103,

Select the Magnehelic gage for high accuracy--guaranteed within 2% of full scale--and for the wide choice of 81 models available to suit your needs precisely. Using Dwyer's simple, frictionless Magnehelic gage movement, it quickly indicates low air o...


Robinair (11910 Digital Gauge - Low Pressure
Robinair (11910 Digital Gauge - Low Pressure
By Robinair
In Stock
$111.98

mpn: 11910, ean: 0637335037953,

The Robinair 11910 automatically performs pressure/temperature calculations for up to 17 different refrigerants. It's compact design, large display, and bright back light provide technicians with accurate readings and ease of use in any location. Com...


Emerson-Fisher LP-Gas Equipment R632A-BCF Integral 2-Stage Regulator, 9-13'' W.C Spring, 1/4'' x 1/2'' NPT
Emerson-Fisher LP-Gas Equipment R632A-BCF Integral 2-Stage Regulator, 9-13" W.C Spring, 1/4" x 1/2" NPT
By Emerson-Fisher LP-Gas Equipment
In Stock
$83.66

mpn: R632A-BCF,

The Type R632A is an Underwriters Laboratories (UL) listed regulator designed for Two-Stage LP-Gas systems. The unit is designed to reduce the tank pressure through an integral two-stage system to 11 inches w.c. / 27.4 mbar. The first-stage screened ...


PneumaticPlus SAR4000T-N06BG Air Pressure Regulator, T-Handle, 3/4'' NPT with Gauge and Bracket
PneumaticPlus SAR4000T-N06BG Air Pressure Regulator, T-Handle, 3/4" NPT with Gauge and Bracket
By PneumaticPlus
In Stock
$63.99

mpn: SAR4000T-N06BG, ean: 0723434187887,

PneumaticPlus offers quality Air Preparation Units for various pneumatic applications. SAR Modular Series Regulators can connect to SAF PneumaticPlus offers quality Air Preparation Units for various pneumatic applications. SAR Modular Series Regulato...


Emerson-Fisher LP-Gas Equipment R652-CFF 2nd Stage Regulator, Back Mount, 9-13'' W.C Spring, 1/2'' x 3/4'' NPT
Emerson-Fisher LP-Gas Equipment R652-CFF 2nd Stage Regulator, Back Mount, 9-13" W.C Spring, 1/2" x 3/4" NPT
By Emerson-Fisher LP-Gas Equipment
In Stock
$66.96

mpn: R652-CFF,

R600 Series second-stage regulators are Underwriters Laboratories (UL) listed designed to reduce the Outlet pressure from a first-stage regulator in domestic LP-gas (propane) systems installations. Type R622 is designed for two-stage domestic applica...


Fluke 54-2 Dual Input Digital Thermometer with USB Recording, 3 AA Battery, -418 to 3212 Degree F Range, 60 Hz Noise Rejection
Fluke 54-2 Dual Input Digital Thermometer with USB Recording, 3 AA Battery, -418 to 3212 Degree F Range, 60 Hz Noise Rejection
By Fluke
SKU: #542B
In Stock
$422.94

sku: 542B, mpn: FLUKE-54-2 B 60HZ, ean: 0095969565110,

The Fluke 50 Series II digital thermocouple thermometer is used for applications requiring a broad range of temperatures, including furnaces, kilns, freezers, and other industrial applications. This thermometer measures temperatures in Celsius, Fahre...


PIC Gauge PRO-204L-254R Glycerin Filled Industrial Front Flanged Panel Mount Pressure Gauge with Stainless Steel Case, Brass Internals, Plastic Lens, 2-1/2'' Dial Size, 1/4'' Male NPT, 0/5000 psi
PIC Gauge PRO-204L-254R Glycerin Filled Industrial Front Flanged Panel Mount Pressure Gauge with Stainless Steel Case, Brass Internals, Plastic Lens, 2-1/2" Dial Size, 1/4" Male NPT, 0/5000 psi
By PIC Gauges
In Stock
$37.04
$36.28
You Save: 2%

mpn: PRO-204L-254R,

An inexpensive utility gauge for the broad commercial and industrial markets. Suitable for air, water, oil, gas or any other media not corrosive to brass.Front Flanged Panel Mount Design. Stainless Steel Case and Bezel. Brass Internals and Connection...


Dwyer Magnehelic Series 2000 Differential Pressure Gauge, Range 15-0-15''WC
Dwyer Magnehelic Series 2000 Differential Pressure Gauge, Range 15-0-15"WC
By Dwyer
In Stock
$74.00
$62.29
You Save: 16%

mpn: 2330,

Select the Magnehelic gage for high accuracy--guaranteed within 2% of full scale--and for the wide choice of 81 models available to suit your needs precisely. Using Dwyer's simple, frictionless Magnehelic gage movement, it quickly indicates low air o...


Winters PEM Series Steel Dual Scale Economical All Purpose Pressure Gauge with Brass Internals, 0-60 psi/kpa, 2'' Dial Display, +/-3-2-3% Accuracy, 1/8'' NPT Bottom Mount
Winters PEM Series Steel Dual Scale Economical All Purpose Pressure Gauge with Brass Internals, 0-60 psi/kpa, 2" Dial Display, +/-3-2-3% Accuracy, 1/8" NPT Bottom Mount
By Winters Instruments
In Stock
$10.45
$8.70
You Save: 17%

mpn: PEM207, ean: 0628311200287,

PEM Standard Economy Gauges are the most economical and general  purpose of the pressure gauges. Their applications include  plumbing, heating, air conditioning, pneumatic, hydraulic, water tanks, air compressors and OEM PEM  Add-On Options Featur...


PIC Gauge S201L-254G 2.5'' Dial, 0/200 psi Range, 1/4'' Male NPT Connection Size, Bottom Mount Single Scale Glycerine Filled Pressure Gauge with a Stainless Steel Case, Brass Internals, Stainless Steel Bezel, and Polycarbonate Lens
PIC Gauge S201L-254G 2.5" Dial, 0/200 psi Range, 1/4" Male NPT Connection Size, Bottom Mount Single Scale Glycerine Filled Pressure Gauge with a Stainless Steel Case, Brass Internals, Stainless Steel Bezel, and Polycarbonate Lens
By PIC Gauges
In Stock
$19.48
$14.48
You Save: 26%

mpn: S201L-254G,

An inexpensive utility gauge for the broad commercial and industrial markets. Suitable for air, water, oil, gas or any other media not corrosive to brass.Stainless Steel Case and Bezel. Brass Internals and Connection (with built in snubber). Phosphor...


Winters PFQ Series Stainless Steel 304 Dual Scale Liquid Filled Pressure Gauge with Brass Internals, 0-300 psi/kpa,2-1/2'' Dial Display, +/-1.5% Accuracy, 1/4'' NPT Center Back Mount
Winters PFQ Series Stainless Steel 304 Dual Scale Liquid Filled Pressure Gauge with Brass Internals, 0-300 psi/kpa,2-1/2" Dial Display, +/-1.5% Accuracy, 1/4" NPT Center Back Mount
By Winters Instruments
In Stock
$21.32
$18.62
You Save: 13%

mpn: PFQ907, ean: 0628311235296,

The Winters PFQ series pressure gauge with brass wetted parts has a glycerin-filled circular dial enclosed in a stainless steel 304 case, and a male connection, and measures pressure with a single or dual scale with an accuracy of + or - 1.5% or 2.5%...


Winters PFQ Series Stainless Steel 304 Dual Scale Liquid Filled Pressure Gauge with Brass Internals, 0-2000 psi/kpa,2-1/2'' Dial Display, +/-1.5% Accuracy, 1/4'' NPT Bottom Mount
Winters PFQ Series Stainless Steel 304 Dual Scale Liquid Filled Pressure Gauge with Brass Internals, 0-2000 psi/kpa,2-1/2" Dial Display, +/-1.5% Accuracy, 1/4" NPT Bottom Mount
By Winters Instruments
In Stock
$18.62

mpn: PFQ810, ean: 0628311211443,

The Winters PFQ series pressure gauge with brass wetted parts has a glycerin-filled circular dial enclosed in a stainless steel 304 case, and a male connection, and measures pressure with a single or dual scale with an accuracy of + or - 1.5% or 2.5%...


Square D by Schneider Electric 9013FHG19J39M1X 9013FHG Air-Compressor Pressure Switch, 135 psi Set Off, 30 psi Fixed Difference, 1/4'' NPT External, 2-Way Release Valve, Auto/Off Cut-Out Lever
Square D by Schneider Electric 9013FHG19J39M1X 9013FHG Air-Compressor Pressure Switch, 135 psi Set Off, 30 psi Fixed Difference, 1/4" NPT External, 2-Way Release Valve, Auto/Off Cut-Out Lever
By Square D by Schneider Electric
In Stock
$33.60

mpn: 9013FHG19J39M1X, ean: 0785901543923,

This Square D Pumptrol 9013FHG19J39M1X air-compressor pressure switch controls an electrically driven air compressor in a power circuit when the adjustable threshold upon falling is reached and is set to turn off at 135 psi. The switch has a 1/4" NPT...


NEW STAINLESS STEEL LIQUID FILLED PRESSURE GAUGE WOG WATER OIL GAS 0 to 300 PSI CENTER BACK MOUNT 0-300 1/4'' NPT MALE 2.5'' FACE DIAL FOR COMPRESSOR HYDRAULIC AIR TANK
NEW STAINLESS STEEL LIQUID FILLED PRESSURE GAUGE WOG WATER OIL GAS 0 to 300 PSI CENTER BACK MOUNT 0-300 1/4" NPT MALE 2.5" FACE DIAL FOR COMPRESSOR HYDRAULIC AIR TANK
By LIQUID FILLED GAUGE
In Stock
$15.90

mpn: LFSB-2-300, ean: 0713807492267,

- Stainless Steel Case And Bezel - Brass Internals & Connection - Phosphor Bronze Bourdon Tube - Plastic Lens Standard - Glycerine Filled The Glycerine Filling Helps Dampen The Effects Of Pulsation And Vibration, While Also Perpetually Lubric...


PIC Gauge PRO-201L-254J Glycerin Filled Industrial Bottom Mount Pressure Gauge with Stainless Steel Case, Brass Internals, Plastic Lens, 2-1/2'' Dial Size, 1/4'' Male NPT, 0/500 psi
PIC Gauge PRO-201L-254J Glycerin Filled Industrial Bottom Mount Pressure Gauge with Stainless Steel Case, Brass Internals, Plastic Lens, 2-1/2" Dial Size, 1/4" Male NPT, 0/500 psi
By PIC Gauges
In Stock
$38.70
$14.90
You Save: 61%

mpn: PRO-201L-254J,

An inexpensive utility gauge for the broad commercial and industrial markets. Suitable for air, water, oil, gas or any other media not corrosive to brass.Stainless Steel Case and Bezel. Brass Internals and Connection (with built in snubber). Phosphor...


NEW STAINLESS STEEL LIQUID FILLED PRESSURE GAUGE WOG WATER OIL GAS 0 to 30 PSI LOWER MOUNT 0-30 PSI 1/4'' NPT 2.5'' FACE DIAL FOR COMPRESSOR HYDRAULIC AIR TANK
NEW STAINLESS STEEL LIQUID FILLED PRESSURE GAUGE WOG WATER OIL GAS 0 to 30 PSI LOWER MOUNT 0-30 PSI 1/4" NPT 2.5" FACE DIAL FOR COMPRESSOR HYDRAULIC AIR TANK
By gauge
In Stock
$14.40

mpn: MI LFSL-2-30,

1.5% Span of accuracy This style liquid gauge can handle any application between -104 Degrees through 158 Degrees F Liquid/Glycerin Filled gauges enhance the reliability and integrity of the measuring systems for long periods. The Glycerin Filling he...



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