Flutter valve, a one-way valve used in respiratory medicine to prevent air from travelling back along a chest tube
Valve Corporation | variable valve timing | Valve | Poppet valve | Walschaerts valve gear | valve | Walshaert's valve gear | Variable valve timing | valve gear | Valve audio amplifier | The Omega Seamaster, a deep diving watch. The second crown (at 10 o'clock) is a Helium release valve | tap (valve) | Piston valve | Justice Safety Valve Act of 2013 | helium release valve | Flutter valve | Fleming valve | desmodromic valve | Check valve | Artificial heart valve | Aortic valve stenosis |