Ashcroft 92947XLL Pressure Gauge 4.5 in Dial 0-30 Psi Rear Flange

Product Description

The ASHCROFT 92947XLL is an analog pressure gauge designed for monitoring system pressure in a wide range of industrial and mechanical applications. It features a 4.5-inch dial for easy readability and covers a pressure range of 0 to 30 psi with an accuracy of 0.5 percent of full scale. The thermoplastic case keeps weight low and provides adequate protection in typical service environments. Connection is via a 1/4-inch rear thread, and the unit mounts using a rear flange for panel or bulkhead installation. This gauge is non-liquid-filled, making it suitable for clean, dry-service installations where fluid damping is not required. Licensed HVAC technicians, plumbers, and mechanical contractors are the typical installers.

This gauge is well suited for residential and light commercial mechanical systems where a compact, readable pressure indication is needed. Rear flange mounting allows it to be flush-mounted to panels or enclosures, keeping the dial flush and the profile clean. The 1/4-inch thread connection is a common size across plumbing, HVAC, and compressed-air systems. Applications include boiler pressure monitoring, compressed-air systems, water supply lines, and similar low-to-moderate pressure circuits operating within the 0 to 30 psi range.

Key Features

• 4.5-inch analog dial for clear, at-a-glance pressure readings
• 0 to 30 psi range suited for low-pressure water, air, and gas service
• 0.5 percent of full-scale accuracy for reliable system monitoring
• Rear flange mount enables flush panel or bulkhead installation
• 1/4-inch rear thread connection matches common trade fittings
• Non-liquid-filled thermoplastic case — lightweight and corrosion-resistant

Compatibility

Designed as an OEM-style replacement or direct-install pressure gauge for mechanical systems requiring a 4.5-inch dial, 1/4-inch rear-thread, rear-flange-mount gauge rated 0 to 30 psi.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified mechanical contractor. Isolate and depressurize the system completely before removing any existing gauge or fitting. Apply appropriate thread sealant to the 1/4-inch male thread per local plumbing or mechanical code requirements. Do not overtighten the threaded connection, as thermoplastic-case gauges can crack if excessive torque is applied to the case body.