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Ashcroft process pressure gauge with 4 1/2 inch white dial black polybutylene terephthalate case glass lens bottom 1/2 inch NPT male

Ashcroft

Ashcroft 451259SD04L600# Process Pressure Gauge 0-600 psi 4 1/2 in Dial

SKU CH-QZWA-VPY5A

Measures pressure from 0 to 600 psi with a 4 1/2 in dial and ±0.5% accuracy

  • Product typeElectronic
  • ±0.5 % accuracy for precise pressure readings
  • 4 1/2 in dial gives clear visibility at a glance
  • 0–600 psi range covers broad industrial needs
  • 1/2 in NPT male connection fits standard piping
  • Glass lens resists scratches and chemical exposure

Professional Measurement Tool

The Ashcroft 451259SD04L600# Process Pressure Gauge delivers accurate pressure monitoring for industrial and commercial systems. It covers a primary range of 0 to 600 psi with an accuracy of +/- 0.5 percent, making it suitable for engineers and technicians who need reliable process data. The 4 1/2 in dial provides clear readability for routine inspections and troubleshooting tasks. This electronic gauge serves applications where consistent pressure verification is essential.

Durable Construction Details

The gauge case uses Polybutylene Terephthalate in a black finish with a glass lens protecting the white dial. A 1/2 in male NPT connection at the bottom allows direct mounting into existing process piping without additional adapters. The unit is not field fillable and carries no IP or NEMA rating, so it is intended for protected indoor environments. Vibration resistance and dry dampening features are not included, limiting use to stable mounting locations.

Stable Operational Profile

As a mechanical dial instrument, the gauge operates without external power and produces no audible noise during normal use. The absence of fill fluid and electronic components means thermal drift is minimal and there are no active cooling requirements. Power draw is effectively zero, simplifying integration into panels or standalone installations. These characteristics support long-term deployment in controlled process settings.

How it compares

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

Price $51.99
Typical for this category: the median of 3,030 items is $54.99.

Specifications

Product
Brand nameASHCROFT
Product typeElectronic

Questions about this item

What accuracy does the +/- 0.5 percent specification deliver for the 0 to 600 psi range?

The gauge reads within +/- 0.5 percent of full scale, so at 600 psi the maximum error is 3 psi across the entire range.

What mounting hardware matches the 1/2 in male NPT bottom connection?

A 1/2 in female NPT fitting or pipe thread seals directly to the bottom-mounted male connection on the black polybutylene terephthalate case.

How do you install the gauge without damaging the glass lens or stripping the threads?

Apply thread sealant to the 1/2 in male NPT threads, tighten using a wrench on the case flats only, and avoid forcing the glass lens during mounting.

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