Need All-Flo™ Stainless Steel 1-1/2-inch AODD pumps for your process? These All-Flo™ 1-1/2-inch air-operated double diaphragm pumps use a Stainless Steel wetted path and are built for dependable pneumatic pumping. Stainless Steel is a dependable option when you need a durable metal wetted path and corrosion resistance for tough service. This connection size is a strong middle ground when you need more capacity than smaller pumps but still want manageable line sizes. For the best long-term fit, compare construction options, diaphragm materials, and system requirements before you select a pump. Browse available configurations below and pick the option that matches your setup.