Im looking to do some blasting and spraying so will need to sort myself a 3 stage breathing air filtration system and an air fed mask but i have a few questions, my compressor which is sited away from the workshop in its own shed is 200 litre 4hp 18cfm will this be big enough to run a spray gun and an air fed mask? and a 10 gallon pressure pot blaster and air fed mask? (obviously not both combinations at the same time) if not what is the largest 240v compressor available for sensible money? worth considering a road compressor? i was looking at the norgren 3 stage breathing air filtration system and see two filters need changing every 3 months and the third every 12 months, does anyone know a rough cost of a set of filters? how often does the air fed masks charcoal filter need changing and the approx cost of those? sorry for all the questions guys but trying to work out costs here 
