Ashcroft 93753XLL Pressure Gauge 4.5 in Dial Rear Flange

Product Description

The ASHCROFT 93753XLL is an analog pressure gauge built for accurate, reliable pressure monitoring in industrial and mechanical systems. Featuring a 4.5-inch dial for easy readout, this gauge covers a range of 0 to 300 psi with an accuracy of 0.5% of scale. The aluminum case keeps weight low while the stainless steel wetted parts resist corrosion in demanding fluid and gas service environments. Installed via a rear flange mount with a 1/4-inch thread connection, it suits panel-mount and surface-mount applications where the gauge face must align flush with a surface. HVAC technicians, plumbers, and mechanical contractors are the primary installers.

This gauge is appropriate for residential and commercial applications where a mid-range pressure measurement point is needed. Typical install scenarios include boiler systems, compressed air lines, water supply monitoring, and HVAC hydronic loops. The 4.5-inch dial is well-suited for installations requiring clear remote readability from a distance. The non-liquid-filled design keeps the gauge lightweight and clean for dry-service environments where vibration is not a primary concern.

Key Features

• 4.5-inch analog dial provides clear, easy-to-read pressure indication
• 0 to 300 psi pressure range suits a wide variety of mechanical and HVAC applications
• 0.5% of scale accuracy for precise pressure monitoring
• Stainless steel wetted parts offer corrosion resistance in fluid and gas service
• Aluminum case reduces overall weight without sacrificing durability
• Rear flange mount design allows flush panel or surface installation
• Non-liquid-filled construction for clean, dry-service environments

Compatibility

Designed as an OEM-style replacement or direct-install pressure gauge for systems requiring a 1/4-inch rear-threaded, rear-flange-mount analog gauge in the 0 to 300 psi range.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified mechanical contractor in accordance with applicable local codes. Isolate and depressurize the system fully before removing or installing any pressure gauge. Apply appropriate thread sealant to the 1/4-inch male thread connection and tighten to snug-plus-quarter-turn by hand before final wrench tightening — avoid over-torquing, which can crack the socket or distort the case. Do not install this gauge in applications with significant vibration or pulsation without an inline snubber or dampener.