The Wilden 15-3660-01 is a genuine replacement air chamber constructed of durable aluminum. It is designed specifically for Wilden's 3-inch (PV15/PS15) Air-Operated Double-Diaphragm (AODD) pumps. This critical component houses the pressurized air responsible for driving the diaphragms to efficiently move viscous, abrasive, or corrosive fluids in industrial applications.