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Ashcroft 451279 process pressure gauge with 4 1/2 inch white dial, black phenolic case, glass lens, bottom 1/2 inch NPT male connection

Ashcroft

Ashcroft 451279 Process Pressure Gauge 0-600 psi 4 1/2 in Dial

SKU CH-H8J3-AA9HD

A process pressure gauge with a 4 1/2 in dial measuring 0 to 600 psi at ±0.5% accuracy, phenolic case and 1/2 in NPT male bottom connection

  • Product typeElectronic
  • ±0.5 % accuracy for precise readings
  • 4 1/2 in dial for clear visibility
  • 0 to 600 psi range suits industrial processes
  • 1/2 in NPT male connection fits standard piping
  • Phenolic case with glass lens resists harsh environments

Ashcroft 451279 Process Pressure Gauge

This Ashcroft 451279 process pressure gauge measures pressure from 0 to 600 psi. The instrument features a 4 1/2 in dial with a white face and glass lens housed in a black phenolic case. A 1/2 in male NPT connection at the bottom allows direct installation into the process line. Accuracy is rated at +/- 0.5 percent of span.

Suited for technicians monitoring hydraulic

Operators who need a bottom-mounted, direct-reading gauge with a 5.375 in bolt circle for panel mounting will find this model appropriate. The dry case has no fillable port and offers no built-in vibration dampening, so it is not intended for high-vibration environments or applications requiring liquid filling. Buyers needing a different pressure range, connection size, or filled case should select another gauge.

Primary pressure range 0 to 600 psi

The 0 to 600 psi span is the single specification that determines whether this gauge matches the process pressure being measured. If the system operates above 600 psi or requires a lower range for better resolution, this model will not provide the correct reading. Verify the maximum working pressure before installation.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $105.99
Pricier than about 65% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameASHCROFT
Product typeElectronic

Questions about this item

Will the phenolic case or glass lens need periodic replacement on this Ashcroft 451279 gauge?

The phenolic case and glass lens are fixed components; neither is designed as a field-replaceable part, and the gauge is not field-fillable, so no routine fluid top-up is required.

What limits sustained accuracy on this 0-600 psi process gauge during continuous operation?

The rated accuracy is ±0.5 % of span across the 0-600 psi range; with no vibration resistance or dampening feature specified, mechanical vibration is the first factor that can degrade reading stability under sustained use.

Does the 4 1/2 in dial or bottom-mounted 1/2 in NPT connection generate noticeable heat or noise when the gauge runs all day?

As a purely mechanical pressure gauge with no electronic circuitry, it produces no audible noise and no measurable self-heating during continuous operation.

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