7/8" Hardline ?

[Clayton_Botkin@xxxxxxxxxxxxxxx (Clayton Botkin)]

     Does anyone know if it's necessary to evacuate (ie. pressurize, remove 
     air/moisture from) the hollow center conductor on Andrews 7/8" 
     hardline ?
     
     I'm installing a couple of runs of this for the first time.
     
     Thanks
     ke4rtm
     Clayton