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

Ashcroft

Ashcroft 451279 Process Pressure Gauge 0 to 30 psi 4 1/2 in Dial 1/2 in NPT

SKU CH-X4S1-ZWA6Q

Process pressure gauge measures 0 to 30 psi with a 4 1/2 in dial, ±0.5% accuracy, phenolic case, glass lens, and 1/2 in NPT bottom connection

  • Product typeElectronic
  • +/- 0.5% accuracy for reliable readings
  • 4 1/2 in dial for clear visibility
  • 1/2 in NPT male connection fits standard piping
  • Phenolic case resists harsh environments
  • Glass lens protects against damage

Ashcroft 451279 Process Pressure Gauge

This Ashcroft process pressure gauge measures from 0 to 30 psi with a 4 1/2 inch dial and a 1/2 inch male NPT bottom connection. It provides an accuracy of +/- 0.5 percent and features a phenolic case with a glass lens. The case is black with a white dial and a 5.375 inch bolt circle diameter.

Suited for panel mounting where 0.5 percent

This gauge suits technicians monitoring low-pressure processes up to 30 psi who need a panel-mounted instrument with a 1/2 inch NPT connection. It is not for applications requiring liquid-filled dampening or a specific IP or NEMA environmental rating. Buyers needing vibration resistance or a field-fillable case should look at alternative models.

Accuracy of +/- 0.5 percent

The +/- 0.5 percent accuracy specification is the primary figure that determines if this gauge meets your process tolerance requirements. Verify that this precision level matches the demands of your specific measurement task before purchasing. The 0 to 30 psi range and 1/2 inch NPT connection must also align with your system parameters.

How it compares

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

Price $106.99
Pricier than about 65% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameASHCROFT
Product typeElectronic

Questions about this item

How can I confirm the gauge reads within its +/- 0.5 percent accuracy after installation?

Apply a known reference pressure within the 0 to 30 psi range and compare the needle position to the white dial markings; the reading should fall inside the stated tolerance.

What components are included and which fittings must be sourced separately?

The gauge ships with the phenolic case, glass lens, and 1/2 in male NPT bottom connection; mounting bolts for the 5.375 in bolt circle and any pipe adapters are not included.

Which dial size and pressure range version matches the 451279 model?

This model is the 4 1/2 in dial version covering 0 to 30 psi; other dial diameters or pressure spans carry different part numbers.

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