Springtech Elite 600 Reverse Osmosis Machine with expansion kit. This R.O. will do 1,200 gallons of sap an hour with the included expansion kit. This R.O. has been used for the last 5 seasons. It has been well taken care of and always kept clean. This R.O. is in great shape and ready to go. Call (585) 786-5684 or email sales@sagefamilymaple.com with any questions. Thanks for looking