This is a 1 1/2" Pneumatic pump with Buna ball valves, diaphragms and valve seats. Pump outfitted with buna are primarily used for water/oil mixture. However additional products can be delivered with this pump. Please contact us if you have questions. This pump is interchangeable with the Wilden Models M and T series pumps along with the Versamatic model V (Clamp Style) pump. We offer free shipping within the Continental United States and are pleased to accept phone orders at no additional cost. Note that the image shown may not be reflective of the actual item being offered.