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Black aluminum process pressure gauge with 4 1/2 inch white dial and glass lens

Ashcroft

Ashcroft 451379 Process Pressure Gauge 0-100 psi 4 1/2 in Dial IP66 NEMA 4X

SKU CH-VY8Q-9BH6A

Process pressure gauge with a 4 1/2 in dial measuring 0 to 100 psi, IP66 and NEMA 4X rated

  • Color/FinishBlack
  • TypeElectronic
  • ±0.5 % accuracy for precise pressure readings
  • 4 1/2 in dial gives clear, easy visibility
  • IP66 / NEMA 4X rating protects against dust and water jets
  • 1/2 in NPT male connection fits standard process lines
  • Liquid-filled design resists vibration in harsh environments

Ashcroft 451379 Process Gauge

This new Ashcroft 451379 process pressure gauge measures 0 to 100 psi on a 4 1/2 in dial. It is built for technicians and plant engineers who need reliable local indication in harsh environments. The IP66 and NEMA 4X rated aluminium case resists dust and wash-down. Liquid-filled vibration resistance keeps the pointer steady on pulsating lines.

Primary Range 0-100 psi

The single specification that decides fit is the primary pressure range of 0 to 100 psi. Accuracy is rated at +/- 0.5 percent of span across this range. The 1/2 in male NPT bottom connection matches standard process taps. Selecting a gauge with a different range would give incorrect readings or risk over-pressure damage.

Capacity and Headroom

The gauge comfortably handles continuous process pressures up to 100 psi with the stated accuracy. It runs out of scale beyond 100 psi and cannot protect against over-pressure events without additional accessories. The glass lens and aluminium case suit corrosive atmospheres but do not extend the measurable range. Field-fillable design allows liquid replacement if the fill degrades over time.

Highlights

  • ±0.5 % accuracy for precise pressure readings
  • 4 1/2 in dial gives clear, easy visibility
  • IP66 / NEMA 4X rating protects against dust and water jets
  • 1/2 in NPT male connection fits standard process lines
  • Liquid-filled design resists vibration in harsh environments

Specifications

BrandASHCROFT
Color/FinishBlack
TypeElectronic

Questions about this item

What does the ±0.5% accuracy figure mean when the gauge is installed in a live process?

The gauge reads within half a percent of the true pressure across the 0 to 100 psi range, so at full scale the maximum error is 0.5 psi.

How does the 1/2 in NPT male connection limit what I can thread it into?

It mates only with a 1/2 in NPT female port; the taper seal requires matching threads and cannot be adapted to BSP or metric sizes without a proper fitting.

Will the 4 1/2 in aluminum case with IP66 rating fit through a standard panel cut-out?

The case needs a cut-out slightly larger than 4 1/2 inches; the IP66 seal is maintained by the gasketed flange, so the opening must match the flange bolt pattern.

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