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Davis
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V78
Sourcebook
Browse over 116 pages of pressure and vacuum instruments for your lab, process, and manufacturing needs. Davis Instruments is a leading supplier of digital pressure gauges, and we carry the top brands, including Ashcroft, Wika, Mid-West Instruments, Druck, Crystal Engineering, and Dwyer.
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Gauges - Differential

Gauges - Differential
Differential pressure gauges give the relative pressure between two points. If both operating pressures are the same, the measuring element cannot move and no pressure will be indicated. A differential pressure is indicated when one pressure is higher or lower. Low differential pressures can be measured directly in cases of high static pressures.

Davis Instruments has an industry-leading selection of differential pressure gauges for process, manufacturing, and HVAC-R applications. Choose from leading manufacturers such as Mid-West, Dwyer, and Ashcroft Instruments.

Mid-West Instruments, located in Sterling Heights, MI is one of the leading designers and manufacturers of differential pressure gauges and switches in the U.S. The experienced engineers and technicians utilize the latest equipment for engineering, manufacturing and testing the gauge and switch products. All Mid-West Instrument products are manufactured in the United States and are backed by an industry leading Five (5) Year Warranty. Oil, Gas, Water, Chemical, Petrochemical, Power Generation and Gas Liquidification are a few of the industries served. Features and benefits:

  • Differential Pressure Ranges Available for Liquids or Gases
  • Standard or Custom Dial Scales
  • Wide Variety of Materials
  • From Low Cost Differential Pressure Indicators to High Accuracy Differential Pressure Gauges

    Dwyer Instruments was founded in 1931 and is one of the largest manufacturers of competitively priced precision instruments. 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 or non-corrosive gas pressures--either positive, negative (vacuum) or differential. The design resists shock, vibration and over-pressures. No manometer fluid to evaporate, freeze or cause toxic or leveling problems. It's inexpensive, too. The Magnehelic gage 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 systems. It also checks gas-air ratio controls and automatic valves, and monitors blood and respiratory pressures in medical care equipment.

    For over 150 years, Ashcroft Instruments has set the standards for accuracy, quality, and dependability in pressure and temperature measurement. With products to suit virtually any application, Ashcroft differential pressure gauges are specified and trusted around the world for the most demanding requirements. In chemical processing, oil refineries, power plants, pharmaceutical, food, and industrial equipment applications, the Ashcroft trademark is the industry standard for performance and reliability.

    To help you find the right differential pressure gauge for your application, contact our Application Specialists for free technical support. Let our experts help you find the right differential pressure gauge. Davis Insruments has over 75 years of experience in finding the right products for our customers.

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    Photohelic Pressure Switch Gauge 0 2 WC 1 8 NPT F  (Representative photo only)

    Photohelic Pressure Switch/Gauge, 0-2" WC, 1/8" NPT(F)

    Output 2 DPDT relays per set point,Range 0 to 2.0" H2O,Dial size " Dia 4
    Mfg Part#
    DO-68062-28
    Usually ships in 3 days.
    $295.00 USD/EACH
    $236.00 USD/EACH

    Qty:

    Dwyer Magnehelic Differential Pressure Gauge Type 2003 0 to 3 WC (Representative photo only)

    Dwyer Magnehelic Differential Pressure Gauge, Type 2003, 0 to 3" WC

    Range 0 to 3.0" H2O,Brand Dwyer,Product Type Differential Pressure Gauges
    Mfg Part# 2003
    DO-68462-67
    In stock.
    $64.00 USD/EACH
    $51.20 USD/EACH

    Qty:

    A3010 Swtch Gauge 0 10 Inwc Photohelic Pre Switch Gauge (Representative photo only)

    A3010:Swtch/Gauge 0/10 Inwc Photohelic Pre Switch/Gauge

    Range 0 to 10.0" H2O,CE Compliance Yes,Brand Dwyer
    Mfg Part#
    DO-68462-90
    Usually ships in 3 days.
    $295.00 USD/EACH
    $236.00 USD/EACH

    Qty:

    Dwyer Magnehelic Differential Pressure Gauge 2000 0 1 0 WC (Representative photo only)

    Dwyer Magnehelic Differential Pressure Gauge, 2000: 0.-1.0" WC

    Range 0 to 1.0" H2O,Dial size " Dia 4,Display analog dial
    Mfg Part# 2001
    DO-68062-06
    In stock.
    $68.00 USD/EACH
    $54.40 USD/EACH

    Qty:

    DO-68062-26 Photohelic<small><sup>&reg;</sup></small> Pressure Switch/Gauge, 0-1" WC, 1/8" NPT(F)

    Photohelic Pressure Switch/Gauge, 0-1" WC, 1/8" NPT(F)

    Range 0 to 1.0" H2O,Output 2 DPDT relays per set point,Dial size " Dia 4
    Mfg Part#
    DO-68062-26
    Usually ships in 2 days.
    $295.00 USD/EACH
    $236.00 USD/EACH

    Qty:

    Mid West 120 Piston Type Differential Pressure Switch 15 psi Al Grommet (Representative photo only)

    Mid-West 120, Piston Type Differential Pressure Switch, 15 psi, Al, Grommet

    Range 0 to 15 psid,Output (1) Switch in std. enclosure with wire grommet seal,Dial size " Dia 2.5
    Mfg Part#
    DO-68404-42
    Usually ships in 7 days.
    $184.00 USD/EACH

    Qty:

    DO-68462-77 Portability Kit for Magnehelic Gauges

    Dwyer Portability Kit for Magnehelic Gauges

    Brand Dwyer,Product Type Differential Gauges
    Mfg Part# A-432
    DO-68462-77
    In stock.
    $58.00 USD/EACH
    $46.40 USD/EACH

    Qty:

    4020 Capsuhelic 0 20 Inh2O Differential P Gauge (Representative photo only)

    4020:Capsuhelic 0/20 Inh2O Differential P Gauge

    Range 0 to 20" H2O,Dial size " Dia 4,Brand Dwyer
    Mfg Part#
    DO-68462-37
    Usually ships in 13 days.
    $389.00 USD/EACH
    $311.20 USD/EACH

    Qty:

    Dwyer Magnehelic Differential Pressure Gauge Type 2005 0 to 5 WC (Representative photo only)

    Dwyer Magnehelic Differential Pressure Gauge, Type 2005, 0 to 5" WC

    Range 0 to 5.0" H2O,Dial size " Dia 4,Display analog dial
    Mfg Part# 2005
    DO-68062-10
    In stock.
    $68.00 USD/EACH
    $54.40 USD/EACH

    Qty:

    Dwyer Magnehelic Differential Pressure Gauge Type 2010 0 to 10 WC (Representative photo only)

    Dwyer Magnehelic Differential Pressure Gauge, Type 2010, 0 to 10" WC

    Range 0 to 10.0" H2O,Brand Dwyer,Product Type Differential Pressure Gauges
    Mfg Part# 2010
    DO-68462-68
    In stock.
    $64.00 USD/EACH
    $51.20 USD/EACH

    Qty:

    Dwyer Magnehelic Differential Pressure Gauge 2000 0 0 25 WC (Representative photo only)

    Dwyer Magnehelic Differential Pressure Gauge, 2000: 0-0.25" WC

    Range 0 to 0.25" H2O,Dial size " Dia 4,Display analog dial
    Mfg Part# 2000-00
    DO-68062-02
    In stock.
    $75.00 USD/EACH
    $60.00 USD/EACH

    Qty:

    A3003 Swtch Gauge 0 3 0inWC Photohelic Pre Switch Gauge (Representative photo only)

    A3003:Swtch/Gauge 0/3.0inWC Photohelic Pre Switch/Gauge

    Range 0 to 3.0" H2O,CE Compliance Yes,Brand Dwyer
    Mfg Part#
    DO-68462-88
    Usually ships in 5 days.
    $295.00 USD/EACH
    $236.00 USD/EACH

    Qty:

    Photohelic Pressure Switch Gauge 0 5 WC 1 8 NPT F  (Representative photo only)

    Photohelic Pressure Switch/Gauge, 0-5" WC, 1/8" NPT(F)

    Range 0 to 5.0" H2O,Output 2 DPDT relays per set point,Dial size " Dia 4
    Mfg Part#
    DO-68062-30
    Usually ships in 3 days.
    $295.00 USD/EACH
    $236.00 USD/EACH

    Qty:

    Dwyer Magnehelic Differential Pressure Gauge 2000 0 05 0 20 WC (Representative photo only)

    Dwyer Magnehelic Differential Pressure Gauge, 2000: 0.05-0.20" WC

    Range 0.05 to 0.2" H2O,Dial size " Dia 4,Display analog dial
    Mfg Part# 2000-00N
    DO-68062-00
    In stock.
    $79.00 USD/EACH
    $63.20 USD/EACH

    Qty:

    Dwyer Magnehelic Differential Pressure Gauge Type 2300 0 0 25 to 0 to 0 25 WC (Representative photo only)

    Dwyer Magnehelic Differential Pressure Gauge, Type 2300-0, -0.25 to 0 to 0.25" WC

    Range 0.25 to 0 to 0.25" H2O,Brand Dwyer,Product Type Differential Pressure Gauges
    Mfg Part# 2300-0
    DO-68462-75
    In stock.
    $74.00 USD/EACH
    $59.20 USD/EACH

    Qty:

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