... simple construction, slight weight, economic and easy operation...SW-I-VS Marine water maker is a Single stage ... on the power source from the yatch or marine.SW-I-VS Marine water maker use most economic ... food to isolate the salty water on the ground.SW-I-VS Marine water adopt food grade UPVC ... check with our customer service.SW-I-VS models :Model SW-IVS-300L (Invertor+VFD)SW-IVS-1000LSW-IVS-1000LSW- ...