Ashcroft 83230 Pressure Gauge 0-300 Psi 3-1/2 in Dial Npt

Product Description

The ASHCROFT 83230 is a liquid-filled industrial pressure gauge designed for accurate pressure monitoring in demanding trade and industrial applications. It features a 3-1/2-inch analog dial with a range of 0 to 300 psi and delivers 1% of scale accuracy. The stainless steel case is grade 304/316 construction, and the Bourdon tube is 316 stainless steel, making it well suited for corrosive or high-cycle environments. A polycarbonate lens protects the dial face. The lower-mount, 1/4-inch NPT connection allows direct installation into pipework, manifolds, and equipment ports. HVAC technicians, plumbers, and industrial service professionals install this gauge to monitor system pressure in refrigeration, water, gas, and hydraulic circuits.

The 83230 is appropriate for residential and commercial mechanical systems where a durable, liquid-filled gauge is required. Liquid fill dampens needle vibration in high-pulsation or high-vibration environments, improving readability and extending service life. The lower-mount NPT connection suits panel, manifold, and direct-pipe installations. The gauge carries CRN, IP54, IP65/NEMA 4, PED, and RoHS compliance, making it acceptable for a broad range of regulated installations including refrigeration, plumbing, and process piping systems.

Key Features

• 0 to 300 psi pressure range with compound scale starting at -30 Hg
• 1% of scale accuracy on a 3-1/2-inch analog dial
• Liquid-filled case dampens vibration and pulsation for stable readings
• 316 stainless steel Bourdon tube resists corrosion in harsh media
• 304/316 stainless steel case with polycarbonate lens
• Certified to CRN, IP54, IP65/NEMA 4, PED, and RoHS standards

Compatibility

Designed as an OEM-style replacement or direct-install industrial pressure gauge for systems requiring a 1/4-inch NPT lower-mount connection and a 0 to 300 psi measurement range.

Installation Notes

Installation is typically performed by a licensed HVAC technician, plumber, or pipefitter. Before installation, isolate and depressurize the system completely and verify the line medium is compatible with stainless steel wetted components. Use appropriate thread sealant on the NPT connection and tighten to fitting manufacturer guidelines — do not over-torque the gauge body. Verify the pressure range of the gauge does not exceed the system's maximum allowable working pressure before placing the system back in service.