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Ashcroft process pressure gauge with 4 1/2 inch white dial black phenolic case bottom 1/2 NPT connection

Ashcroft

Ashcroft 451279 Process Pressure Gauge 0 to 400 psi 4 1/2 in Dial

SKU CH-DD6N-YZ2DT

Measures process pressure from 0 to 400 psi with ±0.5% accuracy on a 4 1/2-inch dial and 1/2-inch NPT bottom connection

  • TypeElectronic
  • ±0.5 % accuracy for reliable readings
  • 4 1/2 in dial gives clear visibility
  • 0–400 psi range covers broad applications
  • 1/2 in NPT male connection fits standard piping
  • Phenolic case with glass lens resists harsh environments

Professional Pressure Instrumentation

The Ashcroft 451279 is a process pressure gauge built for industrial measurement tasks. It covers a primary range of 0 to 400 psi with an accuracy of +/- .5 percent. The 4 1/2 in dial provides clear readings for plant operators and maintenance technicians.

Durable Phenolic Construction

A black phenolic case resists chemical exposure and harsh environments while the glass lens protects the white dial. The 1/2 in male NPT connection mounts directly into process lines at the bottom position. The case features a 5.375 in bolt circle for secure panel installation where required.

Upgrade From Lower Accuracy Gauges

This unit replaces instruments with wider error bands or plastic lenses that degrade over time. The jump is worthwhile when process control demands the stated half-percent accuracy across the full 400 psi span. It is not suited for applications requiring liquid-filled dampening or vibration-resistant internals.

Highlights

  • ±0.5 % accuracy for reliable readings
  • 4 1/2 in dial gives clear visibility
  • 0–400 psi range covers broad applications
  • 1/2 in NPT male connection fits standard piping
  • Phenolic case with glass lens resists harsh environments

Specifications

BrandASHCROFT
TypeElectronic

Questions about this item

What accuracy does the ±0.5 % spec deliver across the 0–400 psi range?

The gauge is rated at ±0.5 % of span, so readings stay within ±2 psi anywhere from 0 to 400 psi.

What mounting pattern does the 5.375 in bolt circle match?

The 5.375 in bolt circle fits standard 4 1/2 in panel cut-outs used for Ashcroft process gauges.

How do I seal the 1/2 in male NPT connection without leaks?

Apply PTFE tape or pipe sealant to the male threads, thread into the female port, and tighten one to two turns past finger-tight.

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