1 Breakages are less as the boards are much tougher and have fibers reinforcing in them. 2  they damage less easy from general wear and tear in everyday use in a home or office. 3  It offers slightly better acoustics than standard board.  It is a superior product in case of fire.
It is normal for the solenoid to make noise, it clicks when the valve is turned on or off. It also is normal for a very soft buzzing sound to be heard when the valve is activated, but you should not be able to hear it unless you put your ear near it. If you can easily hear it buzzing, that is not normal.
Those with BAV may be short, average in height, or tall. They may have a slight, average, or large body size. Listening to their chest sometimes provides an important clue. If the blood makes an unusual sound as it flows through the bicuspid aortic valve, this sound or heart murmur can be heard. However, blood may also flow quietly through the bicuspid aortic valve, without a murmur. Many people with BAV are good athletes and enjoy exercise and work outs at the gym.