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Series 25 Pressure Gauge

3D Instruments’ Series 25 Accu-Drive pressure gauges incorporate our signature “direct drive difference” Inconel helical bourdon tube system. Our direct drive technology couples the bourdon tube directly to the shaft-pointer, thereby streamlining the design and reducing the number of moving parts from approximately twelve down to just one.

Advantages of Direct Drive Technology

Thirty years of industrial application have proven that our Direct Drive design is vastly superior to the C-bourdon tube/movement system incorporated in traditional pressure gauges, especially for applications that experience high vibration and/or pulsation.

Liquid-Free Cases for Improved Performance

In many severe service applications, C-bourdon pressure gauges are filled with silicone to both dampen needle movement as well as lubricate their metal movements to extend service life. Besides adding additional cost to the price of the pressure gauge, this filler liquid causes other operational difficulties such as dial discoloration and a potential shift of calibration.

Series 25 pressure gauges’ “direct drive difference” technology applies silicone dampener directly to the bourdon tube. This “coil dampening” approach isolates the pointer from vibration and pulsation, thereby eliminating the need for a liquid-filled gauge case.

The Right Pressure Gauge for Any Application

Series 25 Accu-Drive gauges can accommodate pressure ranges from vacuum to 20,000 psi (varies by model). All Series 25 pressure gauges are overpressure protected to 150% of full scale.

Various case styles are available, with measurement accuracies ranging from 0.5% “Process” gauge models to 0.25% full scale “Test” gauges.

Reduced Maintenance & Longer Working Life

In most instances, a standard 3D Accu-Drive pressure gauge can directly replace an “old fashioned” liquid-filled gauge, providing reliable performance without the maintenance headaches cited above.

When compared to liquid-filled gauges, Accu-Drive gauges have been shown to last as much as ten times longer in applications with extreme pulsation and vibration. The net effect of these benefits, coupled with a six-year product warranty, is a dramatic reduction in your cost of ownership.

And, with no gears or wear points, our Accu-Drive gauges maintain their rated accuracy over the entire life of the gauge, without the need for costly periodic recalibration.

Manufactured from Premium Quality Materials

Series 25 Accu-Drive pressure gauges utilize the finest materials of construction. Gauge cases can be either ABS or 300 Series stainless steel. Bourdon tubes are constructed of Inconel, a highly elastic material with excellent corrosion resistance. All other wetted parts are 316 stainless steel.

Order Series 25 Pressure Gauges for Your Application

Order today, request a quote, or contact 3D Instruments to learn more about our Series 25 pressure gauges.

Download the Series 25 product guide, or view the product listings below for additional information and specifications. For more specific Product details select one of the Product categories below:


  Product Name   
Series-25  2.5" Process Gauges
Series-25 2.5" Process Gauges
( 12 products )
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Series-25   4.5" Process Gauges
Series-25 4.5" Process Gauges
( 24 products )
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Series-25  2.5" Test Gauges
Series-25 2.5" Test Gauges
( 12 products )
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Series-25  4.5" Test Gauges
Series-25 4.5" Test Gauges
( 12 products )
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Displaying 1 to 4 (of 4 products) Result Pages:  1 

Features & Benefits of Series 25 Accu-Drive Pressure Gauges

  • Gauge case material: ABS or 300 Series stainless steel
  • Bourdon tube material: Inconel
  • All other wetted parts manufactured from 316 stainless steel
  • Designed to minimize corrosion associated with challenging field environments
  • Available in pressure ranges from vacuum to 20,000 psi (varies by model)
  • Overpressure protection to 150% of full scale
  • Available with 2.5”, 4.5”, 6”, 8.5”, or 12” dials (varies by model)
  • Available in various accuracies, from 0.5% process gauges to 0.25% full-scale test gauges

The combination of a low cost of ownership, long service life, maintenance-free “direct drive” technology, robust design, and a wide array of pressure ranges makes 3D Instruments’ Series 25 Accu-Drive “direct drive difference” pressure gauges the ideal choice for demanding pressure monitoring or test/calibration applications.

Order the Series 25 pressure gauge you need, request a quote, or contact 3D Instruments for more information.

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