Ashcroft 451279S02LXLL2K Pressure Gauge 4.5 in Dial 2000 Psi

Product Description

The ASHCROFT 451279S02LXLL2K is an analog pressure gauge designed for industrial and mechanical service applications requiring reliable pressure indication up to 2000 psi. Featuring a 4.5-inch dial with a rear flange mount configuration, this gauge installs flush against a panel or bracket for clean, readable placement in tight or high-traffic service environments. The thermoplastic case provides corrosion resistance without the added weight of stainless or brass housings. Accuracy is rated at 0.5 percent of scale, making it suitable for process monitoring where consistent readings matter. This unit ships dry with no liquid fill.

This pressure gauge is used in HVAC, plumbing, industrial process, and fluid system applications where panel-mounted or bulk-head pressure monitoring is required. The rear flange mount allows the gauge face to sit flush with a control panel surface, enclosure door, or mounting plate. The 1/4-inch thread connection suits standard instrumentation fittings common in residential and light commercial mechanical systems. Licensed plumbers, pipefitters, and HVAC technicians are the primary installers.

Key Features

• 4.5-inch analog dial for clear, at-a-distance pressure reading
• 0 to 2000 psi pressure range suitable for high-pressure system monitoring
• 0.5 percent of scale accuracy for reliable process indication
• Rear flange mount design enables flush panel installation
• Thermoplastic case offers corrosion resistance and reduced weight
• Dry gauge, no liquid fill — suitable for vibration-low environments

Compatibility

Designed as an OEM-style replacement or new-installation pressure gauge for systems with standard 1/4-inch instrument connections and panel or bracket mounting provisions requiring a 4.5-inch rear-flange-mount gauge.

Installation Notes

Installation is typically performed by a licensed plumber, pipefitter, or HVAC technician. Depressurize and isolate the system completely before removing any existing gauge or fittings. Apply appropriate thread sealant to the 1/4-inch male connection per the system fluid compatibility requirements and applicable plumbing codes. Do not over-torque the threaded connection into the port, as thermoplastic-cased gauges require careful handling to avoid cracking the socket.