Ashcroft 451379S02LXLL5K Pressure Gauge 0-5000 Psi

Product Description

The ASHCROFT 451379S02LXLL5K is a process industrial pressure gauge built for demanding measurement applications in HVAC, plumbing, and industrial systems. It features a 4.5-inch analog dial with a 0 to 5000 psi range, making it suitable for high-pressure monitoring where accurate readings are critical. The gauge uses stainless steel wetted parts for corrosion resistance in contact with process media, and an aluminum case that keeps overall weight low at 2.5 pounds. Accuracy is rated at 0.5 percent of scale. The glass lens provides clear dial visibility in field conditions. This gauge is installed by licensed HVAC technicians, pipefitters, and plumbers working on high-pressure systems.

This gauge is suited for process and industrial installations where a reliable, dry-fill pressure gauge is required. The lower mount configuration with a 1/4-inch MNPT threaded connection allows direct in-line or manifold mounting. It is rated to IP66 and NEMA 4X standards, meaning it is dust-tight and protected against high-pressure water jets, making it appropriate for both indoor mechanical rooms and exposed outdoor service points. The no-fill design simplifies installation and eliminates concerns about liquid fill compatibility with process media.

Key Features

• 0 to 5000 psi measurement range for high-pressure process applications
• 4.5-inch analog dial for clear, at-a-distance readability
• Stainless steel wetted parts resist corrosion from process media
• Aluminum case reduces weight while maintaining structural durability
• IP66 and NEMA 4X rated for dust-tight and weatherproof service
• No-fill dry gauge design — no liquid fill compatibility concerns
• CRN certified for use in Canadian pressure applications

Compatibility

Designed as an OEM-style process pressure gauge for industrial and commercial systems requiring a 1/4-inch MNPT lower-mount connection with a 4.5-inch dial and 0 to 5000 psi range.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified HVAC technician. Depressurize and isolate the system completely before removing an existing gauge or installing this unit. Apply appropriate thread sealant to the MNPT connection per IPC and IFGC guidelines — do not overtighten, as this can crack the gauge socket. Verify that the process media is compatible with stainless steel wetted parts before placing the gauge in service.