Ashcroft 251490A02L-0/30WC Gauge

The Ashcroft 251490A02L-0/30WC Gauge is a high-precision low pressure diaphragm gauge engineered for applications requiring superior sensitivity and reliability. Featuring a 2 1/2" dial size and a robust 1/4" NPT bottom mount connection, this instrument is specifically designed to measure pressure ranges from 0-30" WC (inches of water column). Its core utilizes an ultra-responsive beryllium copper diaphragm and a durable brass tube and socket assembly to ensure stable readings in demanding HVACR and industrial environments. The glass-filled polysulfone case provides a lightweight yet "rust-proof" housing that excels in gas measurement, vacuum pumps, and leak detection systems. Optimized for non-corrosive gas media, this Ashcroft 1490 series gauge offers ASME Grade A accuracy, making it a critical component for monitoring natural gas levels, air filters, and specialized medical equipment like respirators or suction regulators.

Key Benefits:

• Enhanced Sensitivity: Specifically calibrated for 0-30" WC, providing much higher resolution for low-pressure gas systems than standard PSI gauges.
• Rugged Construction: The glass-filled polysulfone case is designed to resist dents and corrosion, ensuring longevity in harsh industrial settings.
• Precision Components: Utilizes a beryllium copper diaphragm for superior elasticity and resistance to measurement "set" over time.
• Easy Calibration: Features an easily removable polycarbonate window allowing for quick zero adjustments in the field.
• Versatile Application: Safe for use with natural gas (with appropriate throttle plug) and other non-corrosive dry gases.

Common Questions:

Is this gauge suitable for liquid pressure measurement?
No, the Ashcroft 1490 is a dry gauge designed exclusively for air and non-corrosive gases. It should not be used with liquid media.

Can I use this gauge for natural gas services?
Yes, it is suitable for intermittent or continuous natural gas service, provided a .013" throttle plug is installed to protect the internal diaphragm.

How do I adjust the pointer if it drifts from zero?
The polycarbonate window is threaded and can be removed to access the adjustment screw for small zero-point corrections.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

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