valvular

valvular
/ˈvælvjulə(r); `vælvjəlɚ/ adj
of valves, esp those regulating the flow of blood 阀的; （尤指）（心脏或血管）瓣（膜）的
    a valvular disease of the heart 心脏瓣膜疾病.

牛津英汉双解词典