1/4 in NPT.
RTi E4000 Eliminator II Series Desiccant Dryer
RTI 6960-1 Replacement Element
RTI N32-W1-DPI Eliminator Eliminizer Eliminex Differential Pressure Indicator
RTI Eliminator EH7000-3R 3 Stage Heavy Duty Desiccant Manual Dryer
Reading Technologies (Rti) DE401 Replacement Desiccant Element
RTI DE401 1-Stage Replacement Filter Element for DE Series Desiccant Dryer