All-Flo™ Polypropylene 1/2-inch air-operated double diaphragm pumps are a solid choice for many industrial fluid-handling jobs. 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. Here you’ll find All-Flo™ AODD pumps with a Polypropylene wetted path in the 1/2-inch size, so you can focus on the build that fits your system. Check the available configurations below and choose the build that meets your requirements. If you’re replacing an existing unit, double-check your connection size and specs so the swap is smooth.