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Black aluminum case compound gauge 4 1/2 in dial white face 30 to 100 psi IP66

Ashcroft

Ashcroft 451379 Compound Gauge 30 to 100 psi 4 1/2 in

SKU CH-4470-VT7G0

Compound gauge reads 30 inHg vacuum to 100 psi with ±0.5% accuracy in a 4 1/2 in IP66-rated aluminum case

  • TypeElectronic
  • ±0.5 % accuracy for reliable readings
  • IP66 / NEMA 4X enclosure resists dust and water
  • 4 1/2 in dial with glass lens for clear visibility
  • 30 to 100 psi compound range covers vacuum and pressure
  • Liquid-filled case dampens vibration in harsh environments

Precision Process Gauge for Industrial Monitoring

The Ashcroft 451379 compound gauge measures vacuum and pressure from 30 Hg to 100 psi with a .5 percent accuracy rating. Its 4 1/2 inch white dial sits inside a black aluminum case rated IP66 and NEMA 4X for wash-down environments. The phenolic and thermoplastic construction resists corrosion in harsh process settings. This instrument suits plant engineers and maintenance technicians who need reliable local indication.

Verify Connection and Fill Requirements

Confirm your process piping uses a 1/2 inch male NPT bottom connection before ordering. The case is field-fillable for liquid dampening, but ships dry with no dampening fluid installed. Ensure the mounting orientation matches a bottom-entry design and that the glass lens meets your site safety specifications. No electrical power or signal wiring is required for this mechanical gauge.

Replaces Worn Mechanical Gauges in Corrosive Service

This unit replaces older dry gauges that have lost calibration or suffered case corrosion in wash-down zones. The jump is worth it when vibration resistance and IP66 sealing are needed to maintain reading stability. It does not suit applications requiring electrical output, panel-mount flanges, or ranges outside the 30 to 100 psi compound scale.

Highlights

  • ±0.5 % accuracy for reliable readings
  • IP66 / NEMA 4X enclosure resists dust and water
  • 4 1/2 in dial with glass lens for clear visibility
  • 30 to 100 psi compound range covers vacuum and pressure
  • Liquid-filled case dampens vibration in harsh environments

Specifications

BrandASHCROFT
TypeElectronic

Questions about this item

What comes with the Ashcroft 451379 gauge and what must be sourced separately?

The gauge ships as a complete unit with its aluminum case, glass lens and 1/2 in NPT male bottom connection. Pipe sealant or thread tape for installation is not included.

How do I decide between the 30 to 100 psi range and other available ranges?

Choose this model when the process operates between 30 inHg vacuum and 100 psi pressure; the +/- 0.5 percent accuracy applies across that full compound span.

What does the +/- 0.5 percent accuracy mean once the gauge is mounted on a live system?

At any point from 30 inHg vacuum to 100 psi the reading will stay within half a percent of the true pressure, protected to IP66 and NEMA 4X against wash-down and dust.

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