thomas-blitzluft 337

im running a 337 and i was told its rated at 150 psi....i was browsing the street source store and saw the same compressor but it says 220 psi. is this a typo?http://www.streetsourcedistributing.com/store/AddCart.asp?ProdID=%7B5A4F1E35%2D47EB%2D4427%2D97AB%2D7FE4BF0DB60E%7D