Ashcroft 251009 2 1/2 in 0-300 psi Pressure Gauge

2 1/2 in Industrial Pressure Gauge

The Ashcroft 251009 is a 2 1/2 inch industrial pressure gauge designed for measuring fluid or gas pressure up to 300 psi. It features a 304 stainless steel case with a polycarbonate lens and a white dial marked with a primary range of 0 to 300 psi. The gauge offers an accuracy of +/- 1.0 percent and uses a 1/4 inch male NPT bottom connection. It is rated IP54 when the vent plug is open and IP65 with NEMA 4 when the plug is closed.

Suitable Applications

This gauge suits technicians and operators who need a dry, bottom-mounted instrument for general industrial pressure monitoring within the stated range and accuracy. It is not intended for buyers who require liquid-filled dampening for high-vibration environments or those needing a field-fillable case for on-site fluid changes. The lack of specific vibration resistance rating also means it should not be selected for severe pulsation or mechanical shock conditions.

Enclosure and Connection Details

The 304 stainless steel case and polycarbonate lens provide corrosion resistance and durability in metallic finish. The dual IP rating allows the user to choose between vented operation for pressure relief or a sealed IP65 NEMA 4 configuration for wash-down protection by closing the plug. The fixed 1/4 inch male NPT bottom connection determines the mounting orientation and thread compatibility without adapter requirements.