It is designed to allow only uni-directional air flow, which enables the pressure cycle of the repair process to occur without reversing the vacuum already created.
Glass Mechanix DAYTONA INJECTOR ASSEMBLY, SEALS AND LUBE, windshield repair kit
Glass Mechanix DAYTONA INJECTOR LOWER SEALS, QTY 6, windshield repair
Glass Mechanix DAYTONA windshield repair injector SEAL STARTER PACK
2 GLASS MECHANIX DAYTONA PUMP REPLACEMENT and DAYTONA SEAL STARTER PACK
Glass Mechanix Daytona Cup Windshield Repair Auto Glass Professional Chip Repair
Glass Mechanix DAYTONA BRIDGE ASSEMBLY, Seals and Lube Windshield repair resin