Ashcroft 82118 Pressure Gauge 2.5 in Dial Npt Center Back

Product Description

The ASHCROFT 82118 is an analog pressure gauge designed for accurate system pressure monitoring across HVAC, plumbing, and industrial service applications. It features a 2.5-inch dial with a compound pressure range of -30 to 0 to 15 inches Hg (vacuum to positive pressure), making it suitable for both vacuum and low-positive-pressure readings. The stainless steel case provides durability in demanding service environments. Accuracy is rated at 1% of scale, which meets the requirements of most field diagnostics and system commissioning tasks. Licensed HVAC technicians and plumbers are the primary installers of this gauge type.

This gauge is suited for residential and light commercial HVAC systems, refrigeration, and plumbing installations where compound pressure readings are required. The 1/4-inch NPT center back mount configuration allows direct inline or manifold installation on pipe fittings and test ports. Its compact 2.5-inch dial face provides clear readability in panel or field-mounted installations. The dry (non-liquid-filled) design keeps the gauge lightweight and appropriate for environments where fluid contamination of the gauge is not a concern.

Key Features

• Compound range: -30 to 0 to 15 inches Hg for vacuum and low-positive-pressure measurement
• 1% of scale accuracy for reliable field diagnostics and system checks
• 2.5-inch analog dial for clear, direct reading
• Stainless steel case construction for corrosion resistance and durability
• 1/4-inch NPT center back mount for straightforward inline or panel installation
• Non-liquid-filled design keeps weight low at 1 pound

Compatibility

Designed as an OEM-style replacement or service gauge for HVAC, plumbing, and industrial systems requiring a 1/4-inch NPT center back mount compound pressure gauge with a 2.5-inch dial.

Installation Notes

Installation should be performed by a licensed HVAC technician or plumber. Isolate and depressurize the system fully before removing or installing any pressure gauge. Use appropriate thread sealant on the NPT connection and do not overtighten, as stainless steel fittings can gall. Verify the pressure range of the gauge matches the expected system operating range before placing the system back in service.