RPVG Liquid Filled Pressure/Vacuum Gauge is a 2 1/2″ diameter liquid filled pressure gauge featuring 30 PSI pressure to 0-30 IN. HG. vacuum range with a durable stainless steel case, acrylic window, bronze bourdon tube, and a 1/4″ N.P.T. brass bottom connection.  This unit has a 3-2-3% accuracy, a glycerin filled case, and a patented spring suspended movement. See also:  RPG Liquid Filled Pressure Gauge. Note:  The RPVG must be installed vertically. Documentation & Downloads 3.802 RPVG Liquid Filled Pressure/Vacuum Gauge Cad File DWG | 4 MB 3.802 RPVG Liquid Filled Pressure/Vacuum Gauge Cut Sheet PDF | 163 KB