A dispenser includes a dispenser body that has an interior cavity in which a first chassis is configured to be translated relative to a second chassis along a central axis. The dispenser has a cartridge including a container and a pump that includes a drive flange defining a drive diameter. The dispenser includes an adaptor having a pair of legs that are configured to be coupled to the drive flange and the first chassis, and the adaptor and the drive flange are configured to prevent the drive flange from being translated independently of each other.