Creators of the Zero Leak Magnetic Valve Will Announce Innovative and Lifesaving 'Lethal Service' Valve Technology at Upcoming Valve World Americas Expo in Houston, Texas PORTLAND, Ore., Sept. 29, 2021 (GLOBE NEWSWIRE) -- Industrial technology company ZL INNOVATIONS, creators of the "Zero Leak, Zero Emissions, Zero Maintenance" magnetic circuit-based valve system,...