Ashcroft 91542XLL Pressure Gauge 4.5 in Dial 0-60 Psi Rear Flange

Product Description

The ASHCROFT 91542XLL is an analog pressure gauge designed for accurate pressure measurement in industrial, HVAC, plumbing, and mechanical system applications. Featuring a 4.5-inch dial and stainless steel wetted parts, this gauge delivers 0.5% of scale accuracy across a range of 0 to 60 psi. The aluminum case keeps weight low while providing durable housing. The rear flange mount configuration allows for panel or wall-mount installations where a secure, flush-mounted gauge is required. This is a dry (no-fill) gauge intended for use where liquid-filled dampening is not needed. Licensed plumbers, HVAC technicians, and mechanical contractors are the primary installers.

This gauge suits residential and light commercial applications where monitoring low-to-mid range system pressures is critical. Typical installations include boiler systems, water supply lines, compressed air systems, and hydronic heating loops. The rear flange mount is well suited for panel-mounted instrumentation where the gauge face must align flush with a surface. The 0.5-inch thread connection simplifies integration into standard threaded pipe and instrumentation fittings commonly found in mechanical rooms and equipment skids.

Key Features

• 4.5-inch analog dial for clear, easy-to-read pressure indication at a distance
• 0 to 60 psi pressure range suitable for low-pressure system monitoring
• 0.5% of scale accuracy for reliable, precise readings
• Stainless steel wetted parts resist corrosion and process media contamination
• Aluminum case provides a lightweight, durable housing
• Rear flange mount design supports panel and wall-flush installations
• Dry (no-fill) construction for applications where vibration dampening is not required

Compatibility

Designed as an OEM-style or replacement analog pressure gauge for use in residential and commercial mechanical, HVAC, plumbing, and industrial piping systems requiring a rear flange mount configuration with a 0.5-inch threaded connection.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified mechanical contractor. Shut off and depressurize the system completely before removing an existing gauge or installing this unit. Apply thread sealant tape or compound appropriate for the service media to the male threads before make-up, and do not overtighten the connection. Verify that the system pressure range is compatible with the 0 to 60 psi gauge range before placing the system back in service.