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Black 2.5 inch low pressure gauge with polycarbonate lens and 1/4 MNPT bottom connection

Ashcroft

Ashcroft 25 1490A 02L 100 in wc Pressure Gauge 1/4 MNPT

SKU CH-ERVD-NVDY0

Measures low pressure from 0 to 100 in wc with ±2-1-2% accuracy and a 2.5 in dial in an IP54-rated polysulfone case

  • Overall length3.6
  • Overall width2.7
  • Color and finishBlack
  • Product typeMicrometers
  • Accurate low-pressure measurement with ±2-1-2% precision
  • 2½ inch dial for clear readings
  • IP54 rated case resists dust and water spray
  • ¼ inch MNPT bottom connection for direct mounting
  • Glass-filled polysulfone case with polycarbonate lens for durability

Precision Low-Pressure Monitoring

The Ashcroft 25 1490A 02L is a low-pressure gauge designed for measuring air or compatible gases up to 100 inches of water column. Its 2 1/2 inch dial provides clear readings with an accuracy of +/-2-1-2 percent. The polysulfone case and polycarbonate lens offer durability for industrial and HVAC applications.

Verify Connection and Media Compatibility

Confirm your system uses a 1/4 inch male NPT process connection at the bottom mounting location before ordering. The gauge is not field fillable and has no dampening features, so ensure the process media is clean, dry gas compatible with polysulfone and polycarbonate materials. This unit is restricted from sale in certain states.

Environmental Protection and Power-Free Operation

Rated IP54, the black polysulfone case resists dust ingress and water splashes during normal operation. As a mechanical instrument, it requires no external power supply and generates zero noise or heat. The dry design eliminates concerns about fill-fluid leaks or thermal drift in varying ambient conditions.

How it compares

Measured against everything we stock in Gauges & Tachometers, at today’s prices. Recalculated every night.

Price $45.99
Pricier than about 64% of the 193 comparable items (median $35.99).

Specifications

Product
Brand nameASHCROFT
Color and finishBlack
Product typeMicrometers

Questions about this item

What comes in the box with the Ashcroft 25 1490A 02L 100 in wc Pressure Gauge and what must be purchased separately?

The box contains the gauge with its 1/4 in MNPT bottom connection, polysulfone case, polycarbonate lens and white dial. Pipe sealant, mounting hardware and any calibration kit are not included.

How do I choose between the available versions or capacities of this gauge?

This model is a single configuration: 0 to 100 in wc range, 2 1/2 in dial, +/-2-1-2 percent accuracy and IP54 rating. No other range or dial size is offered for this part number.

What does the 100 in wc range mean when the gauge is installed in a system?

It measures low pressures from zero up to 100 inches of water column with a +/-2-1-2 percent accuracy across the scale, suitable for HVAC, draft and filter monitoring.

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