800 bags Les but i did follow set up instructions to the letter , you know set it at 10 bar after every spray, the silicon render pumps easier anyway so put the two together and it's a winner for me. Goody i don't spray finish with it but the set up is simple mate it's a r&s with a remixer and smaller hose and gun, bigger compressor though. Ritmo sprays at 14lm but it feels ok mate, does take a little longer but not a problem, best thing is the size and no generator, it really is a one man pump and sprays hardwall a treat, for domestic work it's a no brainer! MP75 and BG projection aswell.