Our innovative exhalation valve design effectively manages internal battery pressure, delivering stable energy output. This precision-engineered component reduces the risk of leakage or rupture by venting excess gas during overcharge or high-temperature operation. Ultra Green Battery’s commitment to safety and longevity starts with reliable exhalation valve technology built into every... https://www.ultragreenbattery.com/product/new-original-8417840-for-drager-savina300-savina-300-ventilator-inhalation-valve-exhalation-valve