Adult single-limb portable ventilator circuit with 6 inch patient tube, 3/16 inch I.D. pressure line, and polyisoprene diaphragm. For use with Life Products LP4™, LP5™, Aequitron LP6™, LP6 Plus™, LP10™ and LIFECARE® PLV®-100, PLV®-102 and HT50 Ventilator.