rectifying valve(n = noun.artifact) diode, rectifying tube - a thermionic tube having two electrodes; used as a rectifier;
is a kind of electron tube, thermionic tube, thermionic vacuum tube, thermionic valve, tube, vacuum tube

aortic valve, atrioventricular valve, ball valve, bicuspid valve, blow valve, butterfly valve, cardiac valve, clack valve, clapper valve, escape valve, exhaust valve, foot valve, heart valve, ileocecal valve, intake valve, kingston valve, left atrioventricular valve, mitral valve, mitral valve prolapse, mitral valve stenosis, pilot valve, poppet valve, pulmonary valve, pyloric valve, rectifying tube, relief valve, right atrioventricular valve, safety valve, semilunar valve, shunt valve, slide valve, sluice valve, thermionic valve, throttle valve, tricuspid valve, valve, valve rocker