This disclosure discloses novel responsive polymers that comprise a rod segment and a coil segment. A Venturi valve incorporated into a remote valve structure for adding a bonus flavor to a regular beverage dispenser without altering the existing valve structure. The first distance is less than the total vertical extension of the conical inlet part. Then responsive to the source code indicating that at least one of the devices is a wireless portable device, a new profile is generated and is used along with the source code to generate a set of code for at least one of the one or more devices that can repeatedly providing, to a gateway, a value named in the source code. A \u201cback pressure\u201d system keeps a flow from being selected if its output cannot accept an additional frame because the current level of that port queue exceeds a threshold.