251490A02B30IWV&30IW Ashcroft Low Pressure Diaphragm Gauge

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  • Dial Size: 2-1/2"
  • Connection Location: Center Back Mount
  • Accuracy: +/-2 Percent
  • Dial Material: Aluminum
  • Display Type: Dial
  • Enclosure Material: Glass Filled Polysulfone Black
  • End Connection: 1/4" Male Threaded
  • Full-Scale Accuracy: +/-2 Percent
  • Max. Pressure: 30 inH2O
  • Mid-Scale Accuracy: +/-1 Percent
  • Min. Pressure: -30 inH2O
  • Mounting Type: Panel
  • Pointer Color: Black
  • Pointer Material: Aluminum
  • Pointer Type: Adjustment Screw
  • Sensor Element: Brass Socket
  • Temperature Rating: -40 to 180 Deg F (Ambient)

Ashcroft 1490 Low Pressure Diaphragm Gauge, 1/4" MPT, -30 to 30 inH2O, +/-2/1/2% Accuracy, 2-1/2" Aluminum Dial, Adjustment Screw Black Pointer, Brass Socket/Movement, Glass Filled Polysulfone Black Case, Bayonet Window, Threaded Polycarbonate Ring, Center Back, Single Scale, Low Pressure Diaphragm Gauge.

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Product Description

Low Pressure Diaphragm Gauge; Pressure Gauge Type Single Scale; Minimum Pressure -30 inH2O; Maximum Pressure 30 inH2O; Mounting Type Panel; Display Type Dial; Enclosure Material Glass Filled Polysulfone Black; End Connection 1/4 Inch Male Threaded; Connection Location Center Back; Sensor Element Brass Socket; Dial Diameter 2-1/2 Inch; Dial Material Aluminum; Pointer Type Adjustment Screw; Pointer Material Aluminum; Pointer Color Black; Temperature Rating -40 to 180 Deg F (Ambient); Full Scale Accuracy +/-2 Percent; Mid Scale Accuracy +/-1 Percent; Accuracy +/-2 Percent; Application Vacuum Pump, Air Compressor, Filter, Gas Measurement; Burner and Leak Detector, Vacuum Oven, Specialized OEM Equipment, Suction Regulator and Respirator; Diaphragm Material Beryllium Copper Brass Polysulfone RTV Silicone; Movement Details Brass; Window Material Bayonet; Dial Figure Black; Dial Baground White; Threaded Ring Material Polycarbonate; Applicable Standard ASME B40.100 Grade A, ISO 9001


Easily removable window for small zero adjustments; Case won't rust or dent; Sensitive diaphragm capsule to measure lowpressure and vacuum; Case is suitable for intermittent or continuous services on natural gas

Series Information

The Ashcroft® 1490 diaphragm gauge is an economical solution for low pressure measurement. This model provides reliability and performance due to its ultra-sensitive diaphragm measuring system. An ideal product for non-corrosive gas measurement. Not suitable for liquids.