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Low Pressure Gauges from Marsh Instruments incorporate a diaphragm element allowing for accurate low-pressure readings in support of a variety of applications, with ASME Grade A 2/1/2% accuracy for ranges above 30” of water. 

Available ranges include vacuum and pressure in inches of water, ounces per square inch, kilopascals, and millimeters of mercury.
Features
  • Diaphragm Internals for Accurate Low Pressure Measurement
  • Weatherproof- Hermetically Sealed Stainless Steel Case
  • 316SS Internals

Specifications

Accuracy

  • For Ranges 30” H₂O and above: ± 2/1/2 % (ASME Grade A)
  • For Ranges Below 30” H₂O: ± 3/1/3 %

Dial Sizes

  • 2-1/2”
  • 4”

Case Material

  • 316 Stainless Steel

Standard Scale

  • Dual Scale with kPa
  • Triple Scale: oz./in², in H₂O, & kPa

Ambient Temperature

  • -40° to 160° F

  • HVAC
  • Boiler
  • Burner
  • Oil & Gas
  • Industrial
  • Commercial
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