BOX of 10- Patient Circuit WITHOUT PEEP, 22mm, Single-Patient Use (SPU) with 1 Water Trap This high-quality 22mm patient circuit is designed without PEEP (Positive End-Expiratory Pressure) and includes a built-in water trap, providing dependable, safe airflow in respiratory and anesthesia support applications. Ideal for hospitals, surgical centers, and clinical settings, it’s tailored for single-patient use (SPU), reducing the risk of cross-contamination while maintaining optimal performance. Return Policy30 Day Return Policy. Free Return. 60 Day warranty, money back guaranteed!