2014 YAMADA NDP-15BST AIR POWERED DOUBLE DIAPHRAGM AODD PUMPS 13.5 GPM 851961 SS. These were taken out of service in 2017 due to a change in the production process. We will guarantee they operate as intended during our 14 day return period. All photos are of the actual units. Any attachments or gauges will be included. Yamada NDP-15BST series Air Powered Double Diaphragm (AODD) pumps provide a maximum flow rate of 13.5 gallons per minute. There is a 14 day return privilege if the item arrives not as described or non-functional unless otherwise stated in the description. This is not a satisfaction guarantee, I will only honor a return if we miss-listed the items or it does not function properly. If you have any questions please let us know. Auctiva offers Free Image Hosting and Editing. Auctiva gets you noticed! This item is in the category “Business & Industrial\Hydraulics, Pneumatics, Pumps & Plumbing\Pumps & Pump Accessories\Vacuum Pumps\Diaphragm Pumps”. The seller is “framframllc” and is located in this country: US. This item can be shipped worldwide.