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Ashcroft Dual-Scale Low-Pressure Gauge 0 to 30" H2O and 0 to 7.5 kPa

Ashcroft  |   Mfr# 25-1490-A-02L-XTU-30IW/KPA  |   Item# DO-68930-02

$68.25 USD/EACH
$54.60 USD/EACH

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  • Effective low-pressure and low-vacuum response with diaphragm
  • True zero indication identifies damaged gauges increasing safety and ensuring accuracy
  • Built-in snubber minimizes rapid pressure fluctuations
Gauges have brass socket, beryllium copper diaphragm capsule, painted steel case, and polycarbonate lens. Bottom connection is 1/4" NPT(M).
Product Type Commercial/Industrial Gauge
Media compatibility any media not corrosive to beryllium copper, brass, polysulfone, and RTV silicone
Wetted materials beryllium copper, brass, polysulfone, RTV silicone
Range 0 to 30" H2O; 0 to 7.5 kPa
Process connection 1/4" NPT(M), lower
Liquid fill none
Accuracy ±3-1-3% (ANSI/ASME grade A)
Dial size (" Dia) 2.5
Case Polysulphone
Lens material Polycarbonate
Model 14902.5
Qty/ea 1
Manufacturer number 25-1490-A-02L-XTU-30IW/KPA
Brand Ashcroft
Display analog dial
Make Type1490


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Questions and Answers

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2 Questions | 2 Answers
Displaying questions 1-2
  • Q:

    Will this gauge work with natural gas? I need a gauge that will read 3 inches w.g. during burner operation and up to 15 inches w.g. when the burner is off.

    I can put a valve to turn off the gas when I do not need to take readings. (for safety)
    Asked on 5/13/2013 by Ambacht Ales from Hillsboro OR

    1 answer



      Yes, the gauge will work with any compatible fluid, including natural gas - and covers the range you are looking to be within.
      Putting in a Tee with a valve would no disrupt the readings or harm the gauge.

      Answered on 5/14/2013 by Jen from Technical Support
  • Q:

    I want to measure the pressure inside a pressurized vessel with the gauge on the inside. I was told to look at either a differential gauge or a vacuum gauge. The pressure range from 4 psi to 20 psi
    Asked on 10/14/2009 by Anonymous from amsterdam, ny

    1 answer



      This gauge will not cover the range you are looking for, 20psi is roughly 140kPa. Vacuum gauges are for negative pressures (pulling air out of the system) so I do not think that is what you need. And, differential gauges will tell you the difference between two environments, so I do not believe this is what you need either. We can help you find the right gauge by finding out more regardindg your application.
      Please contact our technical application specialists for additional assistance (contact information can be found on the product web page).

      Answered on 10/15/2009 by Jen from Technical Support
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Product Reviews


by PowerReviews
Ashcroft 14902.5 Dual-Scale Low-Pressure Gauge 0 to 30" H2O and 0 to 7.5 kPa

(based on 1 review)

Reviewed by 1 customer

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(2 of 2 customers found this review helpful)


Great Gauge for Testing Tankless Heaters

By TechWolf

from Edgewater, FL

About Me Construction Ministry

Verified Reviewer


  • Accurate
  • Easy To Use
  • Well Calibrated
  • Works Properly


  • Plastic Case

Best Uses

  • In The Field

Comments about Ashcroft 14902.5 Dual-Scale Low-Pressure Gauge 0 to 30" H2O and 0 to 7.5 kPa:

Great gauge... it is accurate, consistant, and reliable. The movement is smooth. Only thing would be if the case was steel rather than plastic--It would keep better in my toolbox, but the price was a bit better than local suppliers. I use this to test gas pressure supplying Tankless Hot Water Heaters which most run in the range of 11-15" H20. just connect a 1/4" brass barb to the threads and then add a 3/8" vinyl hose and presto, a great tester for water heaters.

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