When your system calls for 3-inch Stainless Steel AODD pumps from All-Flo™, a few details matter most. Stainless Steel is a dependable option when you need a durable metal wetted path and corrosion resistance for tough service. The larger 3-inch connection size is a good fit when you need higher throughput and a pump that can support bigger process lines. These All-Flo™ 3-inch air-operated double diaphragm pumps use a Stainless Steel wetted path and are built for dependable pneumatic pumping. Browse available configurations below and pick the option that matches your setup. For the best long-term fit, compare construction options, diaphragm materials, and system requirements before you select a pump.