Ashcroft 80253XLL Pressure Gauge 4.5 in Rear Flange Mount

Product Description

The ASHCROFT 80253XLL is an analog pressure gauge built for demanding trade and industrial applications where accurate pressure monitoring is essential. Featuring a 4.5-inch dial and a compound pressure range of 30 inches of vacuum to 0 to 60 psi, this gauge delivers 0.5 percent of scale accuracy for reliable readings across the full measurement span. The case is constructed from aluminum for lightweight durability, while the wetted parts are stainless steel to resist corrosion in contact with process media. It mounts via a rear flange configuration and ships without liquid fill, making it straightforward to install in dry-gauge applications. Licensed HVAC technicians, plumbers, and mechanical contractors install this type of gauge on equipment panels, manifolds, and piping systems.

This gauge is suited for residential and commercial installations where compound pressure measurement is required, including HVAC refrigeration circuits, plumbing systems, compressed air lines, and mechanical equipment panels. The rear flange mount allows the gauge to be surface-mounted flush against a panel or bracket with the process connection entering from the back. The 0.5 percent of scale accuracy meets the demands of professional service and diagnostics work where imprecise readings can lead to misdiagnosis or improper system adjustments.

Key Features

• Compound pressure range: 30 inches of vacuum to 0 to 60 psi
• 4.5-inch analog dial for clear, at-a-distance readability
• 0.5 percent of scale accuracy for professional-grade precision
• Stainless steel wetted parts resist corrosion from process media
• Aluminum case provides lightweight, durable construction
• Rear flange mount for panel or surface installation
• Dry (no liquid fill) configuration for standard gauge applications

Compatibility

Designed as an OEM-style replacement or direct-install analog pressure gauge for HVAC, plumbing, and mechanical systems requiring a rear flange mount with a 0.5-inch threaded process connection and a 4.5-inch dial.

Installation Notes

Installation of this pressure gauge should be performed by a licensed HVAC technician, plumber, or qualified mechanical contractor. Isolate and depressurize the system completely before removing an existing gauge or making new connections. Use appropriate thread sealant on the process connection threads and avoid over-tightening, which can damage the gauge internals. Verify the system pressure range falls within the gauge rating before returning the system to operation.