Ashcroft 91544XLL Pressure Gauge 4.5 in Dial 0-160 Psi

Product Description

The ASHCROFT 91544XLL is an analog pressure gauge designed for accurate system pressure monitoring in HVAC, plumbing, and industrial piping applications. It features a 4.5-inch dial for easy readout, a rear flange mounting configuration, and stainless steel wetted parts for corrosion resistance in demanding service conditions. The gauge measures a pressure range of 0 to 160 psi with an accuracy of 0.5% of scale, making it suitable where reliable pressure readings are required. The aluminum case keeps weight low while maintaining a durable housing. This gauge is a non-liquid-filled model, appropriate for standard dry-service installations.

This pressure gauge is suited for residential and light commercial mechanical systems where a panel-mount or wall-mount rear flange installation is required. Typical applications include boiler systems, chilled water loops, compressed air lines, and pump discharge monitoring. The rear flange mount allows the gauge to be secured to a panel or bracket with the dial face fully visible, which is useful in equipment rooms and mechanical spaces where multiple gauges are ganged together on a manifold or control panel.

Key Features

• 4.5-inch analog dial for clear, at-a-distance pressure readings
• 0 to 160 psi pressure range covers common HVAC and plumbing system demands
• 0.5% of scale accuracy for reliable system monitoring
• Stainless steel wetted parts resist corrosion in wet or mildly aggressive media
• Aluminum case provides a lightweight, durable housing
• Rear flange mount design allows secure panel or bracket installation
• Non-liquid-filled construction suitable for standard dry-service environments

Compatibility

Designed as an OEM-style replacement or direct-install pressure gauge for residential and commercial mechanical systems requiring a rear flange mount, 4.5-inch dial configuration with a 0 to 160 psi range and 0.5-inch threaded connection.

Installation Notes

Installation is typically performed by a licensed plumber, HVAC technician, or pipefitter. Shut off and relieve system pressure completely before removing or installing any pressure gauge. Use appropriate thread sealant or PTFE tape on the threaded connection and tighten to the fitting per standard pipe fitting practice without over-torquing. Verify the pressure range of the gauge is appropriate for the system before placing into service.