Can you have heart valve disease without having a audible murmer?

Yes: The absence of murmur does not rule out valvular disease. Murmurs vary in intensity and may not be audible by some when very soft. Murmurs are likely to be audible in more severe forms of valvular disease. There are maneuvers that could be done to alter and/or intensify murmurs during physical exam.

Yes: You can have heart valve disease without a murmur. As an example, you can have a bicuspid aortic valve without a murmur, although you would tend to have an ejection click. Importantly, though, if you have an abnormal heart valve and there is not enough flow disturbance to cause a murmur, the severity of disease tends to be mild.