Ashcroft 94225 Pressure Gauge 5000 Psi 3.5 in Dial Npt

Product Description

The ASHCROFT 94225 is a liquid-filled analog pressure gauge designed for high-pressure measurement up to 5,000 psi. The 3.5-inch dial provides clear readability in field conditions, and the stainless steel case offers durability in demanding environments. The glycerin or silicone fill dampens pointer vibration and protects internal components from pulsating pressure and mechanical shock. With 1 percent of scale accuracy and a 1/4-inch NPT lower-mount connection, this gauge suits permanent installation on pipelines, hydraulic systems, compressors, and process equipment. HVAC technicians, plumbers, pipefitters, and industrial mechanics commonly install this type of gauge for system monitoring and commissioning.

This gauge is suited for residential and commercial applications where sustained high-pressure monitoring is required. The lower-mount configuration allows direct in-line installation on piping manifolds, pump outlets, and pressure vessels. The stainless steel case resists corrosion in wet or chemically active environments, making it appropriate for refrigeration circuits, water systems, gas distribution, and hydraulic test rigs. The liquid fill makes it particularly well suited for systems prone to vibration or pressure spikes that would otherwise reduce gauge service life.

Key Features

• Liquid-filled design dampens pointer vibration and extends service life on pulsating systems
• 5,000 psi pressure range for high-pressure hydraulic, pneumatic, and process applications
• 3.5-inch analog dial for easy on-site readability
• 1 percent of scale accuracy for reliable system diagnostics
• 1/4-inch NPT lower-mount connection for direct in-line installation
• Stainless steel case for corrosion resistance in harsh or wet environments

Compatibility

Designed as an OEM-style replacement or upgrade gauge for high-pressure piping, hydraulic, and process systems requiring a 1/4-inch NPT lower-mount analog pressure gauge rated to 5,000 psi.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified mechanic following applicable local codes and ASME B40.100 gauge installation guidelines. Depressurize and isolate the system fully before removing any existing gauge or installing this unit. Apply appropriate thread sealant to the NPT threads and tighten to fitting manufacturer specifications without over-torquing, which can damage the bourdon tube. Do not use this gauge beyond its rated maximum pressure of 5,000 psi.