Ashcroft 83191XLL Pressure Gauge 0-300 Psi 3.5 in Dial

Product Description

The ASHCROFT 83191XLL is an analog pressure gauge built for accurate, reliable pressure monitoring in demanding trade applications. Featuring a 3.5-inch dial and a 1/4-inch center back mount connection, this gauge reads from 0 to 300 psi with 1% of scale accuracy. The stainless steel case and stainless steel wetted parts provide corrosion resistance in wet, chemical, or high-humidity environments. It is a dry (no-fill) gauge, meaning it contains no liquid dampening fluid. HVAC technicians, plumbers, and industrial service professionals install this type of gauge for system monitoring, pressure testing, and diagnostic verification across a wide range of fluid and gas applications.

This gauge is suited for residential and commercial installations where a durable, corrosion-resistant pressure gauge is required. Typical applications include HVAC refrigerant and water circuits, plumbing pressure systems, compressed air lines, and general industrial fluid monitoring. The center back mount configuration allows for panel or pipe mounting where a flush or recessed installation is needed. The analog dial provides a quick, at-a-glance reading without the need for electrical connections or external power.

Key Features

• 0 to 300 psi pressure range suitable for a broad range of system pressures
• 1% of scale accuracy for reliable diagnostic and monitoring use
• 3.5-inch dial for clear, easy-to-read pressure indication
• Stainless steel case and wetted parts for corrosion resistance in harsh environments
• Dry, no-fill design requires no liquid dampening fluid
• 1/4-inch center back mount for panel or direct pipe installation

Compatibility

Designed as an OEM-style replacement or direct-install pressure gauge for residential and commercial HVAC, plumbing, and industrial systems requiring a 1/4-inch center back mount analog gauge with a 3.5-inch dial.

Installation Notes

Installation is typically performed by a licensed HVAC technician or plumber. Before installing, depressurize and isolate the system segment where the gauge will be mounted. Apply thread sealant or PTFE tape to the 1/4-inch male threads as required by local plumbing or mechanical code. Do not over-tighten the gauge connection, as this can damage the Bourdon tube or fitting threads.