Image Wilkerson FRLs D18-Series Combination Unit Markets Food & Beverage / Pharmaceutical, Steel Processing, Transportation Jump to Section Product Options Related Products Product Options Part Number Size D18-04MMB 1/2" D18-04M 1/2" Related Products Image Wilkerson FRLs B18-Series Compact Filter/Regulator Image Wilkerson FRLs F18-Series Compact Airline Filter Image Wilkerson FRLs M18-Series Compact Modular Coalescing Filter Image Wilkerson FRLs R18-Series Compact Regulator