Lincoln 85621 Series B 1-1/2 NPT Aluminum Air-Operated Double Diaphragm Pump. 1-1/2 NPT Aluminum Air-Operated Double Diaphragm Pump. Pump Inlet/Outlet NPT: 1-1/2. Air Inlet NPT (f): 3/4. Inlet Air Pressure: 125 psi. For use with New/used Oil, Antifreeze. Model Series: Series B. This unit is in excellent physical condition, Guaranteed in good working order and covered by a 14 day policy. This listing is only for what is shown in the photos. No other parts or pieces are included. Exchanges (if applicable) We only replace items if they are defective or damaged. This site makes use of licensed stock photography. All photography is for illustrative purposes only and all persons depicted are models. BE IN THE KNOW. Subscribe for the latest news, offers and discounts. The item “Lincoln 85621 Series B 1-1/2 NPT Aluminum Air-Operated Double Diaphragm Pump” is in sale since Monday, December 16, 2019. This item is in the category “Business & Industrial\Hydraulics, Pneumatics, Pumps & Plumbing\Pumps & Pump Accessories\Vacuum Pumps\Diaphragm Pumps”. The seller is “second-wind-surplus” and is located in Irvine, California. This item can be shipped worldwide.