A product metering and distribution system for an air seeder has a fanoperative to directa first and second air streams into first and second product distributionnetworks and ametering assembly dispenses first and second product streams throughcorrespondingmeter dispensing ports into corresponding feed ports in the correspondingdistributionnetworks. First and second bypass air channels connect the first and secondfeed ports tothe tank such that when pressure at the first feed port is greater than at thesecond feedport, air passes from the first feed port through the first bypass air channeland throughthe first meter dispensing port into the tank and then out through the secondbypass airchannel and the second meter dispensing port to the second feed port. Arestrictorassembly on the primary hoses downstream from the feed ports can equalizepressuresand reduce cross flow of air.
