McMaster 9194N116 Chemical Resistant Viton Fluoroelastomer O Ring, High Pressure, 1 16 Width, Dash No. 015, ID 9 16" × OD 11 16", Pack of 5 G216063308 Drain Type Automatic Filter Rating Drain Type Automatic Filter Rating 5 micron Series Series 2000 Drain Included Yes Body Material Aluminum Maximum Operating Pressure 140 psi For Substance Type Air Maximum Regulated Pressure 250 psi Adjustment Location Top System Location Air Line Minimum Operating Temperature 23 Degrees F Adjustment Mechanism Knob Filter Type Coalescing Air Inlet Type NPT Maximum Flow Rate 171 scfm Pressure Gauge Included Yes Lubricator Bowl Capacity 4 It can be used to measure basic electrical parameters such as voltage