Select a Product Part NumberDescriptionPortFlow B18-02AGMBAutomatic Drain, Metal Bowl with Sight Glass1/4"148 SCFM B18-02AGAutomatic Drain, Transparent Bowl and Guard1/4"148 SCFM B18-04AGAutomatic Drain, Transparent Bowl and Guard1/2"164 SCFM B18-02MGManual Drain, Transparent Bowl and Guard1/4"148 SCFM B18-04MGManual Drain, Transparent Bowl and Guard1/2"121 SCFM B18-03MGManual Drain, Transparent Bowl and Guard3/8"158 SCFM B18-03AGMBAutomatic Drain, Metal Bowl with Sight Glass3/8"158 SCFM B18-04AGMBAutomatic Drain, Metal Bowl with Sight Glass1/2"121 SCFM B18-02MGMBManual Drain, Metal Bowl with Sight Glass1/4"148 SCFM B18-03MGMBManual Drain, Metal Bowl with Sight Glass3/8"158 SCFM B18-04MGMBManual Drain, Metal Bowl with Sight Glass1/2"121 SCFM B18-03AGAutomatic Drain, Transparent Bowl and Guard3/8"158 SCFM