A valve component capable of being positioned on a body of a valve includes a valving member configured to cooperate with a seal on the valve to selectively permit fluid flow through the valve when the valving member is in a first position and limit flow through the valve when the valving member is in a second position, a retainer configured to retain the seal on the valve body, and at least one frangible portion connecting the valving member to the retainer. The at least one frangible portion is configured to break when the valve component is positioned on the valve body so as to permit the retainer to retain the seal on the valve body. A valve, a dispenser, and methods of forming a valve using a valve component are also provided.