These Adult Ventilator Patient Circuits without PEEP are intended to use with the LTV 1150 and LTV 1200 Ventilators, utilizing external exhalation valves. May also be used with the LTV 900, 950 and 1000, if PEEP is not required. Single patient use only. Do not soak, rinse, wash or sterilize them. 10 Circuits per case.