Abstract: A tank mounting adapter is provided that includes a tank adapter disc and a compression nut. The tank adapter disc includes an opening disposed therethrough, which may be sized to receive at least a portion of the support structure of the fluid pump. The compression nut may include a collar with a threaded opening disposed therethrough such that threads of the threaded opening are configured to correspond to threads on the support structure of the fluid pump. The compression nut may be located adjacent the tank adapter disc. The collar may further include a lower portion that extends into the opening of the tank adapter disc. The compression nut may be movable with respect to the tank adapter disc and against the tank adapter disc.