Accu-Drive Stainless Steel Pressure Gauges

3D Instruments’ stainless steel pressure gauges are specially designed to meet the requirements of demanding pressure monitoring applications. Built to resist the effects of potentially challenging ambient environmentsand corrosive process media, 3D’s Accu-Drive stainless steel gauges incorporate our signature Direct Drive helical Inconel bourdon tube system.

Direct Drive Technology: Better Accuracy & Longer Working Life

Our Direct Drive design couples the bourdon tube directly to the shaft-pointer, streamlining design and reducing the number of moving parts from 13 to just one. That single working part—a helically-wound Bourdon tube—is manufactured from flexible Inconel® X-750 for superior accuracy and coil-shape retention.

Over thirty years of use in industrial applications has proven that our Direct Drive technology is vastly superior to the “traditional” C-bourdon tube and movement systems used in other pressure gauges, especially where vibration and pulsation are common.

Liquid-Filled Gauges vs. Accu-Drive Stainless Steel Gauges

Many C-tube pressure gauges used in severe service applications are filled with silicone to dampen needle movement and lubricate metal components for extended service life. In addition to raising the price of these pressure gauges, case-fill liquids can cause other problems, including dial discoloration and a potential shift of calibration.

In most instances, an Accu-Drive stainless steel gauge can directly replace a traditional liquid-filled gauge without causing the maintenance headaches mentioned above. Compared to liquid-filled gauges, Accu-Drive stainless steel gauges can last up to ten times longer in applications with extreme pulsation and vibration. And, because they lack gears or wear points, our stainless steel gauges maintain their rated accuracy over the entire life of the gauge without the need for costly periodic recalibration. The net effect is a dramatic decrease in your cost of ownership.