AODD Pump Blog & Guides

Selection guides, material comparisons and maintenance knowledge for AODD pumps.

AODD Pump Air Valve Rebuild

Diagnose, rebuild and prevent air valve failure — the #1 cause of stalling. Kit contents, step-by-step rebuild and intervals.

Lifespan by material and service, failure signs, the 5-10% flow rule and step-by-step replacement.

Flow loss, stall, hunting, diaphragm failures — symptom-to-cause diagnosis with the cheapest-first fix.

Disassembly order, inspection pass/fail table, torque & alignment rules, bench test — a $60-120 rebuild instead of a $1,500 pump.

Chemical compatibility, temperature limits, permeation and real cost — with part-number cross-reference for Wilden, ARO, Sandpiper and Graco Husky.

PP vs PVDF vs PTFE vs SS316 vs aluminium — chemical compatibility, temperature limits and cost.

Flow, head, suction lift, air supply and connection size — the six numbers that matter.

Head-to-head comparison — and the honest cases where centrifugal wins.

Working principle, components and air valve operation explained simply.