You are purchasing this stainless/Aluminum Equipment , Preowned, NITRA J30MD-MA refer to pictures, from operational equipment. 15-87PSI, There are no returns on this purchase as it is a piece of Mechanical equipment that is designed as it will work, You have 14 days to test this equipment, if it fails I will refund, You must return at your cost and I will retest and provide feedback. This Equipment has been tested and it works!!!!!! . There is no returns. If you have questions please ask, I can ask more pictures but this is a mechanicl device designed with specific paremeters, I am a disabled veteran busines and appreciate your patronage. FREE SHIPPING IN USA, overseas okay through shipping, thanks for lookine!!!