Ashcroft 83207 Pressure Gauge 3.5 in Dial 1/4 Npt Liquid Filled

Product Description

The ASHCROFT 83207 is an analog pressure gauge designed for accurate pressure monitoring in HVAC, plumbing, and industrial service applications. It features a 3.5 inch diameter dial with a compound pressure range of -30 inches Hg to 100 psi, allowing it to read both vacuum and positive pressure. The stainless steel case provides corrosion resistance in demanding environments. Liquid-filled construction dampens needle vibration and protects internal components from pulsating pressure conditions. Accuracy is rated at 1 percent of full scale. The 1/4 inch NPT center back mount connection suits panel and inline installations. Licensed tradespeople and instrumentation technicians are the typical installers.

The ASHCROFT 83207 is suited for residential and commercial HVAC systems, refrigeration service, hydronic heating, and plumbing pressure testing where a compact, readable gauge with vacuum capability is required. The compound range makes it particularly useful when technicians need to verify system evacuation as well as operating pressure without switching gauges. Center back mount orientation simplifies installation on manifolds, panel cutouts, and pipe tees where a straight-back connection is preferred.

Key Features

• Compound range: -30 inches Hg to 100 psi — reads both vacuum and positive pressure
• 3.5 inch analog dial for clear, at-a-distance reading
• Liquid-filled case dampens needle flutter on pulsating or vibrating systems
• Stainless steel case resists corrosion in wet or chemically active environments
• 1 percent of full-scale accuracy for reliable system diagnostics
• 1/4 inch NPT center back mount for clean panel and inline installations

Compatibility

Designed as an OEM-style replacement or service gauge for HVAC, refrigeration, plumbing, and hydronic systems requiring a 3.5 inch dial, 1/4 inch NPT center back mount compound pressure gauge.

Installation Notes

Installation is typically performed by licensed HVAC technicians, plumbers, or instrumentation mechanics. Shut down system pressure and relieve residual pressure before removing any existing gauge or fitting the 83207 into service. Apply appropriate thread sealant to the NPT connection per job-site or manufacturer requirements — do not overtighten, as stainless steel fittings can gall. Verify the gauge range is appropriate for the system operating pressures before returning the system to service.