>Since its beginning in 1905, Yamada® has been at the forefront in developing the most complete line of air operated double diaphragm pumps in the world. Unmatched in quality, durability and availability, there’s no question as to why more and more industries are coming to Yamada for their pumping needs. As an ISO 9001 certified company, their engineering intellect and manufacturing processes are second to none. Yamada remains dedicated to the continuous development of the most complete line of air operated diaphragm pumps available today. Our philosophy is quite simple.