This Agilent Varian vent valve and air cooling connector kit is needed when installing a cooling fan or vent valve that will be powered by the TwisTorr 305-IC's integrated controller. The center photograph shows how this adapter connects onto the 305-IC's DB-15 port which handles: turbo pump input power, serial communication, remote input and output controls. Installation instructions can be found on pages 250-254 in the Agilent 305-IC TwisTorr turbomolecular user manual in pdf format below. Please see our Related Products section at the bottom for this page for additional accessories that may benefit your vacuum application needs. We offer a large variety of vacuum fittings, hoses, vacuum gauges, sensors/transducers and accessories sold separately on this website. For instruction manuals, please see the Downloads section below.