Ashcroft 80100XLL Pressure Gauge 4.5 in Dial 800 Psi Rear Flange

Product Description

The ASHCROFT 80100XLL is an analog pressure gauge built for accurate, reliable pressure measurement in industrial and mechanical systems. It features a 4.5-inch dial with a measurement range of 0 to 800 psi and delivers accuracy rated at 0.5 percent of scale. The case is constructed from thermoplastic, keeping the unit lightweight without sacrificing durability. This is a dry (no-fill) gauge, making it suited for applications where fluid contamination is not acceptable. The rear flange mount design simplifies panel or wall installation. HVAC technicians, plumbers, and mechanical contractors use gauges like this for system diagnostics, pressure testing, and permanent monitoring installations.

This gauge is appropriate for residential and commercial mechanical systems where a large, easy-to-read 4.5-inch dial is needed. The rear flange mount is commonly used in panel-mounted configurations where the gauge face must be flush with or recessed into a surface. The 0.5-inch threaded connection provides a standard, secure attachment point to process lines or test ports. It is not liquid filled, so it performs best in environments with low vibration and minimal pressure pulsation.

Key Features

• 4.5-inch analog dial for clear, at-a-distance pressure readings
• 0 to 800 psi measurement range suitable for a wide range of medium- to high-pressure applications
• 0.5 percent of scale accuracy for reliable system monitoring
• Dry (no-fill) construction avoids fluid contamination in sensitive environments
• Rear flange mount for clean panel and surface installations
• Thermoplastic case reduces weight while providing adequate protection

Compatibility

Designed as a standard rear-flange-mount analog pressure gauge suitable for panel installations in HVAC, plumbing, and general mechanical piping systems with process connections requiring a 0.5-inch threaded fitting.

Installation Notes

Installation should be performed by a licensed technician or qualified mechanical contractor. Depressurize and isolate the system completely before removing any existing gauge or making connections. Apply appropriate thread sealant to the 0.5-inch threaded connection per the system manufacturers recommendations and applicable plumbing or mechanical codes. Because this is a dry gauge, avoid installing it on lines with severe pulsation or vibration, which can shorten service life.