K4531 Industrial Pressure Gauge Nominal Dial Size 4 1/2 in Accuracy +/-1.0 Percent Gauge Case Material Aluminum Process Connection Type NPT Process Connection Gender Male Lens Material Glass Process Connection Size 1/4 in Field Fillable No Process Connection Location Bottom Case Color Black IP/NEMA Rating IP52 Primary Pressure Range 0 to 300 Dry Dampening Feature None Vibration Resistance None Dial Color White Pressure Gauge Type HVAC Dial Pressure Gauge Liquid-Filled Case No