In good working condition came from a working lab of a local aircraft plant which downsized operations. Buyer will receive the actual pump shown. 

Yamada® NDP-15BPT series Air Powered Double Diaphragm (AODD) pumps provide a maximum flow rate of 13.5 gallons per minute. Pumps are available in aluminum, stainless steel (316), Kynar® (PVDF), groundable acetal, and polypropylene construction, with a wide variety of diaphragm materials.

Inlet (in) 1/2
Outlet (in) 1/2
Max Flow (gpm) 13.5
Max Temp 212
Max Solid (in) 1/32
Valve Type (in) 1/4
Air Motor Material Ryton
Body Material Polypropylene
Elastomer Material PTFE