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Ashcroft 451259 pressure gauge, 4 1/2 inch dial, black case, glass lens, 1/2 inch NPT bottom connection

Ashcroft

Ashcroft 451259 pressure washer part, 0-30 psi, 4 1/2 in dial, 1/2 in NPT

SKU CH-D613-SZ10S

A 4 1/2 inch dial process pressure gauge measuring 0 to 30 psi with a 1/2 inch NPT bottom connection

  • +/- 0.5 % accuracy for precise readings
  • 4 1/2 inch dial for clear visibility
  • 1/2 inch NPT male connection fits standard fittings
  • Glass lens resists scratches and chemicals
  • 0 to 30 psi range suits low-pressure systems

Ashcroft 451259 Process Pressure Gauge

The Ashcroft 451259 is a process pressure gauge built for monitoring hydraulic or pneumatic systems up to 30 psi. It suits plant engineers and maintenance crews who need a panel-ready instrument with a 4 1/2 in dial and 1/2 in NPT male bottom connection.

Accuracy and environmental limits

Accuracy is rated at +/- 0.5 percent of span across the 0 to 30 psi range. The gauge carries no IP or NEMA rating, has no vibration resistance, and is not field fillable, so it must be installed in a protected, low-vibration location.

1/2 in NPT male bottom connection

The single specification that decides fit is the 1/2 in NPT male process connection located at the bottom of the case. Verify that the mating port matches this thread size, gender, and orientation before ordering.

How it compares

Measured against everything we stock in Pressure Washer Guns & Spare Parts, at today’s prices. Recalculated every night.

Price $56.99
Pricier than about 64% of the 141 comparable items (median $26.99).

Specifications

Product
Brand nameASHCROFT

Questions about this item

Is the 4 1/2 inch dial the right size for my panel?

The 4 1/2 inch dial is a standard panel-mount size; check your cut-out dimensions against the gauge case to confirm fit.

What does the 0 to 30 psi range mean for daily use?

The gauge reads from zero up to 30 psi, so it suits low-pressure water or air lines where the normal operating pressure stays well inside that span.

Does the 1/2 inch NPT male connection thread directly into my pump?

Yes, the 1/2 inch NPT male bottom connection threads into a matching female port; seal with tape or paste rated for the system pressure.

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