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Black aluminum case process pressure gauge with white dial and glass lens, 1/2 inch NPT bottom connection

Ashcroft

Ashcroft 451379 Pressure Gauge 0-15 psi 4 1/2 in 1/2 in NPT IP66

SKU CH-037W-4YVRT

A 4½-inch process pressure gauge measuring 0 to 15 psi with ±0.5% accuracy, IP66-rated aluminium case and ½-inch NPT bottom connection

  • Product typeElectronic
  • ±0.5% accuracy for reliable process readings
  • IP66 and NEMA 4X rating protects against dust and water ingress
  • 4 1/2 inch dial with white face and glass lens for clear visibility
  • 1/2 inch NPT male bottom connection fits standard piping
  • Aluminum case with black phenolic/thermoplastic finish resists corrosion

Industrial Process Gauge

The Ashcroft 451379 is a process pressure gauge built for industrial monitoring where reliable readings are essential. It suits plant engineers and maintenance teams tracking low-pressure media in piping or vessel systems. The 4 1/2 in dial provides clear visibility in control panels or field installations. Its IP66 and NEMA 4X ratings confirm suitability for wash-down and outdoor environments.

0-15 psi Range and Accuracy

The gauge covers a primary range of 0 to 15 psi with an accuracy of +/- 0.5 percent of span. This span handles low-pressure air, water or compatible process fluids where tight tolerance matters. Liquid-filled vibration resistance steadies the pointer on pulsating lines without a separate dampening feature. The white dial and glass lens maintain legibility under bright or dim lighting conditions.

1/2 in NPT Bottom Mount

A 1/2 in male NPT connection at the bottom allows direct threading into standard process taps. The aluminum case and black phenolic or thermoplastic internals resist corrosion in harsh atmospheres. Field-fillable design lets technicians add compatible fill fluid on site for vibration damping. The gauge needs no external power, freeing up electrical circuits and simplifying intrinsically safe installations.

How it compares

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

Price $151.99
Pricier than about 72% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameASHCROFT
Product typeElectronic

Questions about this item

Will the 1/2 in NPT connection on the Ashcroft 451379 fit the existing port on my older pump?

The gauge has a 1/2 in male NPT process connection at the bottom, so it will thread directly into a matching female NPT port of the same size.

How can I verify the Ashcroft 451379 is reading within its stated +/- 0.5 percent accuracy after installation?

Apply a known reference pressure between 0 and 15 psi and compare the white dial reading against the reference; the needle should stay within half a percent of full scale.

Does the Ashcroft 451379 ship filled and ready to mount, or do I need to buy fill fluid separately?

The case is field-fillable and designed for liquid-filled vibration resistance, so you will need to purchase a compatible fill fluid and add it before use.

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