A noise reducing apparatus and method for handling of fluid comprises a plurality of discs stacked on one another, each disc having a radially inner periphery and a radially outer periphery, and a plurality of fluid flow channels defined on at least some of the discs and extending from the inner periphery to the outer periphery. The arrangement comprises a turbomolecular vacuum pump having an inlet which is connectable using fixing members to an outlet of an enclosure to be evacuated. The method exposes a surface of the first conductive line. The shunt is inserted into any standard telephone wall jack to inhibit line availability, and removed to restore line availability.