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Ashcroft process pressure gauge black polybutylene terephthalate case white dial glass lens bottom NPT connection

Ashcroft

Ashcroft 451259SD04L300# Process Pressure Gauge 0-300 psi 4-1/2 in

SKU CH-K1YZ-C575F

Measures 0-300 psi on a 4-1/2 in dial with ±0.5% accuracy and a glass lens

  • Size or dimensions4-1/2 in
  • Product typeElectronic
  • ±0.5 % accuracy for precise process readings
  • 4-1/2 in dial gives clear visibility at distance
  • 0-300 psi range covers common industrial pressures
  • 1/2 in NPT male connection fits standard piping
  • Glass lens with PBT case resists harsh environments

4-1/2 Inch Process Pressure Gauge

This Ashcroft process pressure gauge features a 4-1/2 inch dial with a primary pressure range of 0 to 300 psi. It offers an accuracy of +/- 0.5 percent for reliable measurements. The gauge case is constructed from polybutylene terephthalate with a black finish. A glass lens protects the white dial face.

Bottom Mount NPT Connection

The gauge includes a male 1/2 inch NPT process connection located at the bottom. This configuration suits standard industrial piping installations directly. The connection type allows for secure threading into existing process lines. No additional adapters are bundled with the unit.

0 to 300 psi Operating Range

The instrument covers a primary pressure range of 0 to 300 psi for general process monitoring. It provides dry dampening with no vibration resistance features included. The gauge is not field fillable and carries no IP or NEMA rating. Applications requiring liquid filling or environmental sealing need a different model.

How it compares

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

Price $73.99
Pricier than about 57% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameASHCROFT
Product typeElectronic
Size & build
Size or dimensions4-1/2 in

Questions about this item

Will the glass lens need replacement after extended exposure to process fluids?

The glass lens resists most process fluids, but chemical compatibility should be verified for the specific media in your application.

At what point does the +/- 0.5 percent accuracy spec degrade under continuous 300 psi cycling?

The +/- 0.5 percent accuracy is maintained across the full 0 to 300 psi range; sustained cycling at full scale does not alter the stated tolerance.

How much heat does the polybutylene terephthalate case dissipate when the gauge runs all day at 300 psi?

As a mechanical gauge with no power supply, it generates no self-heating; case temperature follows the process media and ambient conditions.

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