... cleaning process ensures adsorbing efficiency and lifetime of molecular sieve. 5. National patent valve guarantees stable equipment operation. 6. Air ... ensure reliable gas supply. 11. Friendly human-machine interface. 5, Main Technical Parameters of ZR-3/30Nm³/h Nitrogen ... 3-3000Nm³/h Nitrogen Purity: 95%-99.9995% (95%, 97%, 98%, 99%, 99.5%, 99.9%, 99.99%, 99.999%, 99.9995%) You can be sure of the ...