Quattroflow™ develops and manufactures, in close cooperation with our customers, quaternary (four-piston) diaphragm pumps spe ... cifically designed for critical applications in the biopharma as well as food and beverage industries. The Quattroflow pump's method of operation allows it to gently, safely and securely convey aqueous solutions and biological products that are shear sensitive. The four-piston design does not include a mechanical shaft seal or wetted rotating parts, ensuring total product containment without abrasion. Additionally, the four-piston pumping principle enables risk-free dry running, low pulsation, self-priming, and minimal particle generation. Quattroflow pumps are available with cleanable multiple-use stainless steel or disposable single-use plastic pump chambers. read more