Ashcroft 351009A2BXLL800 Pressure Gauge 0-800 Psi

Product Description

The ASHCROFT 351009A2BXLL800 is an analog pressure gauge designed for accurate pressure measurement in mechanical, HVAC, plumbing, and industrial service applications. It features a 3.5-inch dial for easy reading at a distance and mounts via a center back connection using a 0.25-inch NPT thread. The stainless steel case provides corrosion resistance in demanding environments, while bronze wetted parts suit a wide range of common system fluids. The gauge reads from 0 to 800 psi with 1 percent of scale accuracy, making it a reliable instrument for monitoring system pressures where consistent readings matter. It is a dry, no-fill gauge with an analog dial face.

This gauge is suited for residential and light commercial HVAC systems, hydronic heating and cooling loops, compressed air systems, and plumbing pressure monitoring. Its center back mount configuration is a common installation style in panel-mounted or pipe-tee applications. Licensed HVAC technicians, plumbers, and pipefitters typically install gauges of this type when commissioning systems, verifying operating pressures, or replacing failed gauges on existing equipment.

Key Features

• 0 to 800 psi pressure range suits high-pressure HVAC and plumbing monitoring
• 1 percent of scale accuracy for reliable pressure readings
• 3.5-inch analog dial provides clear visibility in field conditions
• Stainless steel case resists corrosion in wet or outdoor environments
• Bronze wetted parts compatible with common system fluids
• Dry no-fill design simplifies installation and reduces leak points
• Center back mount with 0.25-inch NPT thread fits standard pipe tee fittings

Compatibility

Designed as an OEM-style replacement or new-installation analog pressure gauge for mechanical systems requiring a 0.25-inch NPT center back mount connection and a 3.5-inch dial format.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or HVAC technician in accordance with applicable local mechanical codes. Depressurize and isolate the system before removing any existing gauge or fittings. Apply appropriate thread sealant to the NPT threads before installation and avoid overtightening, which can crack the gauge socket. Do not use this gauge on systems with fluids incompatible with bronze wetted parts.