Ashcroft 251490A02L-0/15WC Gauge

The Ashcroft 251490A02L-0/15WC Gauge is a premier solution for ultra-sensitive measurement in low-pressure gas applications. Engineered with a 2 1/2" dial size and a 1/4" NPT bottom mount, this low pressure diaphragm gauge excels where traditional Bourdon tube gauges lose accuracy. It features a specialized 0-15"wc (inches of water column) range, making it ideal for monitoring natural gas manifolds, draft pressures, and clean room environments. The robust brass tube and socket, combined with a beryllium copper diaphragm, ensure resilient performance when measuring air or non-corrosive technical gases. Housed in a durable glass-filled polysulfone case, this Ashcroft 1490 series gauge resists denting and corrosion in demanding industrial settings. Its ±2-1-2% ASME Grade A accuracy and clear aluminum dial provide the precision required for leak detection and vacuum systems. Whether you are managing furnace drafts or medical respirators, this gas pressure gauge delivers the reliability and fine-tuned sensitivity essential for professional HVACR and laboratory operations.

• Enhanced Sensitivity: Uses a beryllium copper diaphragm to detect minute pressure changes that standard gauges miss.
• Durable Construction: The glass-filled polysulfone case and polycarbonate window protect internal components from rust and impact.
• Versatile Compatibility: Designed for use with natural gas, air, and other non-corrosive media in temperatures ranging from -40°F to 180°F.
• Easy Installation: Features a standard 1/4" NPT male process connection in a lower (bottom) orientation.
• Professional Precision: Meets ASME B40.100 Grade A standards for consistent and repeatable readings.

Can this gauge be used for liquid pressure measurement?
No, the Ashcroft 1490 series is specifically designed for dry gas media only and should not be used with liquids.

Is the window removable for calibration?
Yes, the polycarbonate window is easily removable, allowing access to the zero-adjustment screw located on the dial face.

What is the maximum pressure this gauge can handle?
This gauge is rated for 0-15"wc. Exceeding the proof pressure (typically 150% of the range) may damage the sensitive diaphragm element.

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.