Pump assembly for an orthopedic device

An orthopedic device, comprising:

• a body formed from a resilient and air-impermeable material, the body forming an outer wall;
• a pump cover extending over a portion of the outer wall and forming a chamber with the outer wall, the pump cover secured to the outer wall such that the chamber is delimited by the outer wall and the pump cover;
• an inlet opening defined by the outer wall and communicating with the chamber;
• an outlet opening defined by the outer wall and communicating with the chamber;
• an airflow valve disposed in the chamber;
• wherein the outer wall forms a backing surface to the pump cover such that the chamber is only contained by the outer wall and the pump cover;
• wherein the outer wall is molded in a configuration in a non-porous to form an air-impermeable surface at a receiving location for receiving the pump cover;
• wherein the receiving location is configured and dimensioned to a shape corresponding to a periphery of the pump cover.