Ashcroft 451379ASL04L30# Pressure Gauge, 0 to 30 psi, 1 2 in MNPT, Plastic, Black GS 3 Material Chrome vanadium Material Chrome vanadium Absorbency Level Moderate CRN Process Connection 1 2 in NPT Male Bezel Material Polypropylene Vibration Resistance Liquid Filled Sensor Type Bourdon Tube Gauge Wetted Parts Brass Bronze Includes Mounting Hardware No Process Connection Type NPT Pointer Characteristics Micrometer Adjustable Movement Type Rotary Liquid Filled Case Yes Includes Vent Plug No Movement Material 400 Stainless Steel Field Fillable Yes Dial Color White Primary Scale Units psi Removable Bezel No Pointer Material Aluminum Blowout Safety Back Yes Gauge Accuracy Grade Grade 2A Process Cleaned for Oxygen Service No Lens Material Glass Dial Face Color White Dry Dampening Feature None Accuracy Scale Full Scale Scale Type Single Process Connection Gender Male Burst Pressure 1 Gauge Case Material Aluminum