An apparatus includes a hose cap coupler, a cap removably coupled to the cap coupler and a clip supported by at least one of the cap and the coupler. The device comprises one or more entities embracing frictional elements attached to, and which are able to rotate with, a hollow axle and one or more pipes running axially inside the hollow axle for transporting of necessary auxiliary fluids to effect the gas treatment. The system can further include a set value calculating device capable of obtaining a set value as the product of the second value and a third value and a controller capable of controlling a supply of power to the motor such that a difference between the set value and the comparative value decreases. The substrate has a substrate surface, substrate pads and a second passivation layer. In another embodiment, the binding includes a pair of pivotable latches, each biased into its closed position by two torsional rotational springs.