If you’re spec’ing Wilden® Polypropylene 3-inch air diaphragm pumps, here’s what to consider. A 3-inch inlet is a smart choice when volume and faster transfer matter more than compact size. Polypropylene gives you a corrosion-resistant thermoplastic option that’s widely used for chemical handling. Here you’ll find Wilden® AODD pumps with a Polypropylene wetted path in the 3-inch size, so you can focus on the build that fits your system. Before you order, confirm compatibility and operating conditions so the pump you choose performs the way you expect. Check the available configurations below and choose the build that meets your requirements.