During an AODD wet-end rebuild, center disk orientation and material matter. Installing a non-beveled face against the diaphragm—or reversing air-side and wetted-side disks—can accelerate abrasion, corrosion and premature diaphragm failure.

AODD pumps can tolerate dry running, but that doesn’t mean it should become normal operating practice. This article explains how dry running can accelerate component wear, increase compressed-air consumption, and raise maintenance costs—and outlines practical ways to prevent it using dry-run protection devices, liquid level controls, and pump controllers.

Learn common AODD pump failure causes, diaphragm and check-valve issues, preventive maintenance tips, and proper reassembly practices to reduce downtime.

If your air operated double diaphragm pump cycles and will not prime or there is no flow, try these troubleshooting tips below.