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Black Ashcroft vacuum gauge with 4 1/2 inch white dial, glass lens, bottom 1/2 NPT connection

Ashcroft

Ashcroft 451259SD04LVAC Vacuum Gauge 30 inHg to 30 psi

SKU CH-9X9R-KX8R2

Measures vacuum and pressure from 30 inHg to 30 psi with ±0.5% accuracy on a 4½ in dial

  • Color/FinishBlack
  • TypeElectronic
  • +/-0.5% accuracy for precise vacuum and pressure readings
  • 30 inHg to 30 psi range covers vacuum and positive pressure
  • 4 1/2 inch dial provides clear, easy-to-read measurements
  • 1/2 inch NPT male connection fits standard process piping
  • Glass lens and polybutylene terephthalate case resist harsh environments

Ashcroft 451259SD04LVAC Vacuum Gauge

The Ashcroft 451259SD04LVAC is a new electronic test and measurement tool built for monitoring vacuum and low-pressure processes. It suits technicians and engineers who need a reliable dial gauge for industrial or automotive applications. The instrument provides clear readings across a combined vacuum and pressure scale.

Primary Pressure Range 30 inHg to 30 psi

The single specification that decides fit is the primary pressure range spanning 30 inHg vacuum to 30 psi positive pressure. This dual-scale capability lets the gauge cover both evacuation and low-pressure charging tasks without swapping instruments. Accuracy is rated at +/- 0.5 percent of span.

Capacity and Headroom

The 4 1/2 inch white dial with glass lens gives comfortable readability for routine checks and set-point verification. The gauge handles continuous cycling between full vacuum and the 30 psi upper limit. It runs out of range above 30 psi or when finer resolution than the stated accuracy is required.

Highlights

  • +/-0.5% accuracy for precise vacuum and pressure readings
  • 30 inHg to 30 psi range covers vacuum and positive pressure
  • 4 1/2 inch dial provides clear, easy-to-read measurements
  • 1/2 inch NPT male connection fits standard process piping
  • Glass lens and polybutylene terephthalate case resist harsh environments

Specifications

BrandASHCROFT
Color/FinishBlack
TypeElectronic

Questions about this item

What does the 30 inHg to 30 psi range cover on this gauge?

It reads full vacuum up to 30 inches of mercury and positive pressure up to 30 psi on a single dial.

How does the 1/2 inch NPT male connection limit installation?

The 1/2 inch NPT male thread requires a matching female port; no adapter is included.

What clearance does the 4 1/2 inch dial need for panel mounting?

The 4 1/2 inch nominal dial diameter requires a cut-out large enough for the case and bottom-mounted connection.

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