Diapharm Pumps


The Yamada Corporation has been a leading producer of industrial equipment since 1905, and of fluid handling products for over 65 years. As a leader in pneumatic pumping technology, Yamada is known in many industries worldwide for its innovative products, superior quality, and unmatched reliability. An impressive history of product design and engineered solutions establishes Yamada as forerunner in industrial pump technology.
Yamada’s reputation for manufacturing top quality products, allied with continuing efforts in research and development, have created a strong foundation for market leadership. As an ISO 9001 certified corporation, stringent quality procedures are followed throughout the manufacturing process, including assembly procedures and product testing.

Advantages and Characteristics

1. Handle a wide variety of fluids with high solids content: No close fitting or rotating parts so liquid with high solids content and/or particle size can be easily pumped.

2. Self Priming: The Yamada pump design (incorpo- rating internal check valves) provides high suction lift even at dry start-up and with heavier fluids.

3. Ability to run dry: No close fitting or sliding parts are at risk—the pump can run dry without damage.

4. Variable flow rate and discharge pressure: Yamada pumps will run at any setting within their operating range simply by adjusting the air inlet pressure and system conditions. One pump can fit a broad spectrum of applications.

5. Portable/Simple Installation: Yamada pumps transport easily to the application site. Simply con-nect an air supply, attach fluid connections, and the pump is ready to perform. There are no complex controls to install or operate.

6. Dead Head: The discharge line can be closed with no damage or wear. The pump will simply slow down and stop.

7. Shear sensitive: The gentle nature and minimal parts contact with the liquid make Yamada pumps an excellent choice for shear sensitive fluids.

8. Safe Operation: Powered by compressed air, Yamada pumps are intrinsically safe.

9. Submersible: If external components are compati-ble, Yamada pumps can be submerged in liquids by simply running the exhaust line above the liquid level.

10. Pumping efficiency remains constant: There are no rotors, gears, or pistons, which wear over time and lead to the gradual decline in perfor-mance/flow rate.

For additional information on Yamada products and ser-vices, visit