If you’re spec’ing Wilden® Polypropylene 1/2-inch air diaphragm pumps, here’s what to consider. Here you’ll find Wilden® AODD pumps with a Polypropylene wetted path in the 1/2-inch size, so you can focus on the build that fits your system. Polypropylene gives you a corrosion-resistant thermoplastic option that’s widely used for chemical handling. This smaller inlet size is helpful when you need a compact footprint and straightforward hose-and-fitting compatibility. If you’re replacing an existing unit, double-check your connection size and specs so the swap is smooth. Check the available configurations below and choose the build that meets your requirements.