A monolithically integrable spiral balun comprises a substrate having first, second, third, and fourth transmission lines formed thereon. The device includes a cylindrical housing having a front end and a rear end, and radially extendible dogs for securing the device in the well tubular. Installation is accomplished by assembling the valve body over the existing pipe, mounting a temporary isolation valve on the bonnet-supporting flange, cutting and removing a section of the existing pipe through the isolation valve to form the gate-receiving gap in the pipe installing the bonnet through the isolation valve, and then removing the isolation value up over the bonnet. A first endcap is joined to the second opposed surface of the first electro active substrate and a second endcap is joined to the second opposed surface of the second electro active substrate. Riser ties are mounted on the interface elements, with riser face forms attached to the ties. A comparison is made between the determined offset term and the determined slope with a predetermined offset threshold and a predetermined slope threshold level, respectively.