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Black polysulfone low-pressure gauge with white dial and 1/4 inch bottom connection

Ashcroft

Ashcroft 25 1490A 02L 60 in wc Pressure Gauge

SKU CH-NRGC-VNQAB

Measures 0 to 60 in wc with 2.5 in dial, ±2-1-2% accuracy, IP54 polysulfone case and 1/4 in NPT bottom connection

  • Length2.500
  • Width3.600
  • Color/FinishBlack
  • TypeMicrometers
  • Accurate low-pressure readings with ±2-1-2 % precision
  • Durable polysulfone case rated IP54 for dust and splash protection
  • 2 ½ inch white dial shows 0 to 60 in wc clearly
  • ¼ inch male NPT bottom connection fits standard fittings
  • Compact 2.5 by 3.6 inch footprint suits tight panels

Ashcroft 25 1490A 02L 60 in wc Pressure Gauge

The Ashcroft 25 1490A 02L is a low-pressure gauge designed for measuring air or compatible gases up to 60 inches of water column. It suits technicians and engineers who need a reliable instrument for HVAC balancing, laboratory testing or light industrial monitoring where low differential pressures are critical. The 2 1/2 inch nominal dial size provides clear readability in panel or direct-mount installations.

Accuracy class and connection limits

The gauge carries a +/-2-1-2 percent accuracy grade across its 0 to 60 in wc primary range, meaning the middle third of the scale is held to the tighter one percent band. Its polysulfone case and polycarbonate lens meet IP54 ingress protection, but the unit has no vibration resistance or dampening feature and is not field fillable. The 1/4 inch male NPT bottom connection requires a compatible female port and thread sealant for a leak-free seal.

Compatibility checks before ordering

Verify that your system pressure never exceeds the 60 in wc upper limit and that the media is compatible with polysulfone and polycarbonate materials. Confirm the mounting surface can accommodate the 2.13 inch bolt circle diameter and that a 1/4 inch female NPT thread is available at the connection point. This gauge is not suitable for high-pressure hydraulic service, applications requiring liquid filling or environments with significant mechanical vibration.

Highlights

  • Accurate low-pressure readings with ±2-1-2 % precision
  • Durable polysulfone case rated IP54 for dust and splash protection
  • 2 ½ inch white dial shows 0 to 60 in wc clearly
  • ¼ inch male NPT bottom connection fits standard fittings
  • Compact 2.5 by 3.6 inch footprint suits tight panels

Specifications

BrandASHCROFT
Length2.500
Width3.600
Color/FinishBlack
TypeMicrometers

Questions about this item

Which pressure range should I select for low-pressure air or gas measurement?

The gauge covers 0 to 60 in wc, which suits low-pressure air and gas systems that operate within that span.

What does the accuracy specification mean for a reading taken on this gauge?

Accuracy is rated at ±2-1-2 percent of full scale, so the middle half of the dial reads within one percent and the first and last quarters within two percent.

What process connection does the gauge use and what thread size should I prepare?

It has a 1/4 in male NPT bottom connection, so the mating port must accept 1/4 in NPT female threads.

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