Why are diaphragm pumps useful for toxic or corrosive chemicals?

Diaphragm pumps are highly effective for handling toxic or corrosive chemicals because they eliminate the need for piston packings that would otherwise come into direct contact with the fluid being pumped.1

In a standard piston pump, the seal must be in contact with the fluid, which creates a risk of leakage that is unacceptable when dealing with hazardous substances. By replacing the piston with a pulsating flexible diaphragm, these pumps provide a secure barrier that prevents such leaks. This design ensures that the chemicals remain contained, making diaphragm pumps a safer and more reliable choice for industrial applications involving dangerous or expensive materials.1