Ashcroft 25-1490-A-02L-60IWV Low Pressure Gauge

Ashcroft 25-1490-A-02L-60IWV is a Type 1490 low‑pressure diaphragm gauge designed for precise measurement of very small pressures. The instrument delivers a 0 to 60 inches of water (inH2O) range in the imperial IWV configuration, enabling reliable readings in HVAC, instrumentation lines, and low‑pressure gas systems where differential pressure is critical. Built on Ashcroft’s diaphragm‑sensor platform, the gauge isolates the process media from the pointer mechanism, helping protect the indicator in environments with moisture, particulates, or corrosive vapors. The 1490 family is known for its compact form and straightforward installation, suitable for panel mounting or back‑connect configurations depending on the variant. Typical applications include monitoring small positive pressures in air and gas lines, leak testing, clean‑room piping, pneumatic control circuits, and laboratory instrumentation where stable, readable low‑pressure data is required. The 25‑1490‑A‑02L‑60IWV designation identifies a specific variant within the family, with the suffixes reflecting the imperial range, connection style, and mounting code defined by Ashcroft’s ordering system. For exact material composition, process connections, and installation recommendations, refer to the 1490 low‑pressure gauge data sheet and the Ashcroft product catalog, which document the diaphragm construction and available options for the 1490 series.