We use very efficiency compressor BAPRO400 or 230 with pressure switch. Different types of plaster, in particular cement or cement- lime plaster, require a lot of air to make the material well sprayed, so our compressor ensures that it gives an efficiency of 250 liters per minute. What are the other additional advantages: - it is an oil-free compressor - includes two exchangeable filters that are easy to replace - contains heads for good cooling - a helpful handle as well as small dimensions and weight allow it to be easily moved from place to place - the compressor contains a mounted pressure switch that allows the operator to turn the machine on and off via the air valve on the spray gun