Ashcroft 45-1188-SS-04L-20IW Gauge 4-1/2 Inch Dial

Ashcroft 45-1188-SS-04L-20IW is a 4-1/2 inch dial low‑pressure bellows gauge (Model 1188) designed for precise measurement of very low pressures in gas and air lines. It features a stainless steel bellows assembly and a 1/2 in NPT lower process connection (04), housed in a phenolic case with a glass lens for clear visibility, and uses a 416 stainless steel movement. This dry instrument has an overall footprint of about 5-13/16 inches long, 5-13/16 inches wide, and 3-7/16 inches deep, with a weight of approximately 2.50 lb (1.1 kg). The gauge is rated for low‑pressure ranges such as 0 to 60 inches of water (inH2O) and offers an accuracy of +/- 2.5% of span (ASME B40.100 Grade A). Designed for compact installation in instrument panels, process lines, and HVAC or refrigeration ancillary systems, it provides a rugged, readily readable indication in tight spaces. The part number suffixes reflect stainless construction and the 1/2 in NPT lower connection (04L), ensuring compatibility with standard piping and manifold configurations common in industrial and laboratory settings.