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The ASHCROFT 83258 is a liquid-filled industrial pressure gauge designed for continuous monitoring of system pressure in demanding trade and industrial applications. It features a 3-1/2 inch analog dial with a range of 0 to 1500 psi and mounts via a 1/4 inch NPT center back connection. The stainless steel case is rated to IP54 and IP65/NEMA 4, making it suitable for wet or wash-down environments. A 316 stainless steel Bourdon tube provides corrosion resistance, while the liquid-filled design dampens needle vibration for stable, accurate readings. Accuracy is rated at 1 percent of scale. Licensed HVAC techs, plumbers, and pipefitters install this gauge in high-pressure systems where reliable, at-a-glance pressure indication is required.
The ASHCROFT 83258 is suited for residential and commercial mechanical systems including plumbing, HVAC hydronic circuits, compressed air, and industrial process piping. The center back mount configuration is common in panel and pipe installations where the gauge face must be flush-readable from the front. The liquid-filled chamber reduces wear on internal components in high-vibration environments such as pump discharge lines or compressor outlets. This gauge carries CRN, PED, and RoHS certifications, supporting use in jurisdictions with pressure equipment directives and hazardous substance compliance requirements.
Designed as an OEM-style replacement or direct-install industrial pressure gauge for plumbing, HVAC hydronic, compressed air, and general process piping systems requiring a 1/4 inch NPT center back mount gauge with a 3-1/2 inch dial.
Installation is typically performed by a licensed plumber, pipefitter, or mechanical contractor. Depressurize and isolate the system completely before removing any existing gauge or fitting. Apply thread sealant appropriate for the media and pressure range to the NPT threads; do not overtighten, as stainless fittings are susceptible to galling. Verify that system pressure does not exceed the 1500 psi maximum rating of this gauge.
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