Models View all DWYER MAGNEHELIC GAUGE 19 177 0 Goyen 1/8" Solenoid Valve 4 132 0 6" Rotary Airlock 46 1159 1 6" Rotary Airlock 21 412 1 1/2" NPT FILL VALVE 3 74 0 LAU A12-9A BLOWER 20 673 0